theory of machines dynamic analysis

50
Prof.Dr. Fatih M. Botsalı

Upload: thmmnt

Post on 04-Jun-2018

234 views

Category:

Documents


0 download

TRANSCRIPT

Page 1: Theory of Machines Dynamic Analysis

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 150

ProfDr Fatih M Botsalı

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 250

DEFINITIONS

Dynamic Science that examines themotion of systems considering the

forces acting on the system

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 350

POINT MASS AND RIGID BODY

Point mass(particle) themass is considered to be

concentrated at the mass

center(Theoraticallyvolume=0)

Rigid body the mass isconsidered to be

distributed over the

volume

m

m

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 450

RIGID BODY

Assumed as system of point masses

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 550

SYSTEM OF PARTICLES(SYSTEM OF POINT MASSES)

ext

i ij i ii i j i

m + =sum sum sum sumF F a

iji j 0

=

sum sumF

exti i i

i i

m =sum sumF a

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 650

DYNAMIC OF SYSTEM OF PARTICLES

i G i i

i

G i i

( m ) m

m M

M m

=

=

=

sum sum

sum

sum

r r

r r

Definition of center of mass

x

y

z

mi

ri

rG

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 750

DYNAMIC OF SYSTEM OF PARTICLES

ext i G

i i

ext G

i

( m ) 0

M 0

minus =

minus =

sum sum

sum

F a

F a

ext

i i ii i

m =

sum sumF a

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 850

DrsquoALEMBERTrsquoS PRINCIPLE

=

+ = 0

Newtonrsquos 2nd law

DrsquoAlembertrsquosprinciple

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 950

ANGULAR MOMENTUM

MOMENT OF MOMENTUM

O i i ii (m )

= times

sumH r v

O

i i i i i ii i

d d

(m ) (m )dt dt= times + times

sum sum

Hr V r V

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1050

ANGULAR MOMENTUM

MOMENT OF MOMENTUM

extO i i

d

dt F= times

sumH

r

O i i i i i i

i i

d d(m ) (m )dt dt

= times + timessum sum

H

r V r V0

O i i i

i

d(m )

dt= times

sumH

r a

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1150

O

ANGULAR MOMENTUM

MOMENT OF MOMENTUM

extOi i

d

dt

F= timessumH

r

O 0

d

dt=

sumH

M

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1250

DYNAMIC EQUILIBRIUM OF

RIGID BODY

G i i G i i

2i i i

( ) [ ( x )m ]

m

= times + times

minus times

sum sum sumsum

iM r m a r α r

r ω r

2i G i i= + times minus timesa a α r ω r

Letrsquos assume point O is

coincident with GO

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1350

DYNAMIC EQUILIBRIUM OF

RIGID BODY

2G i i G i i i i i( ) [ ( x )m ] m= times + times minus timessum sum sum sumi

M r m a r α r r ω r

00

2

G i i

( m )=

sum sumM r α

G I=sum M α

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1450

DYNAMIC EQUILIBRIUM OF

RIGID BODY

G Gext ( m) M= =

sum sumF a a

G I=

sumM α

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1550

DYNAMIC EQUILIBRIUM OF

RIGID BODY

=

+ =0

Newtonrsquos

2nd law

DrsquoAlembertrsquos

principle

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1650

CENTER OF PERCUSSION

Example At t=0 force P is

acted upon the beamsuspended as seen in

figure

Determine the values ofdistances p and q in

order to make the

horizontal component of

the reaction force at Ozero IGG=mk 2

A

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1750

2I mk = Ga p( )= α larr

Gma m p( )minus = minus α rarr

AM 0=sum2

[m( p)]q (mk )x 0α minus =

2

m pq mk 0α minus α =

22 k

pq k qp

= =

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1850

2pq k =

O and A arecenter of

percussions

AA

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1950

Example The cylinder on

the 60˚ oblique plane is

pulled up by a rope with

tension force T at time t=0

as seen in figure

Calculate the necessarytension force T to pull the

cylinder up the oblique

plane so as to make theacceleration of the center

of mass (G) 1 ms2 (parallel to the

oblique plane)

Note Assume that there isno slippage between the

cylinder and the oblique

plane2R 400 mm r=200 mm I=03kg m= m=200 kg

600

R

r

G

T

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2050

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2150

Example

Determine the driving torque T2 to be applied to the crank (2) in

the Scotch-Yoke mechanism shown in figure in order to

maintain the given motion

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2250

Letrsquos draw the free body diagrams of the members of the mechanism

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2350

USE OF GRAPHICAL METHOD

IN DYNAMIC ANALYSIS

Transforming a 3 force+1 moment member into a

3 force member

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2450

=

=

=

=

Determining

the single force

equivalent of a

moment and a

force system

The arrow of theinertia force(ndash)maG must point

the samedirection with the

direction of theinertia torque (-)Iα

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2550

SUPERPOSITION PRINCIPLE

Applicable to linear systems

F(a)= A F(b)=B F(a+b)= A+B

k

b

k

a

k

a+b

k

A B A+B

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2650

DYNAMIC ANALYSIS BY USING

GRAPHICAL METHOD

(1) Perform position analysis to obtain distances and angles

(2) Perform kinematic analysis to obtain accelerations of

centroids and angular acclerations

(3) Determine dynamic forces(-maG) and dynamic moments

(-Iα) acting on the members

(4) For i th member assume mine0 and Iine0 but mass and

mass moment of inertia (mmoi) of all other members are

zero Do it for all members For each case draw FBD of

the members of the mechanism

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2750

DYNAMIC ANALYSIS BY USING

GRAPHICAL METHOD

(5) Assume all masses and mmoirsquos are zero but F ne 0For this case draw the FBD of all mechanism

members

(6) Calculate T2 in all of the cases in steps 4 and 5(7) Superpose all T2 rsquos calculated in step 6 so as to

obtain total torque T2

2 2 I 2 II 2 III 2 IVT T T T T= + + +

E l

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2850

Example

E l

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2950

Example

I

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3050

(-)m2a

G2

T2I

2

I

I2ne0 m2ne0 F=0

Ii=0 mi=0 i=34

II

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3150

II

I3ne0 m3ne0 F=0

mi=0 Ii= i=24

III

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3250

T2III 4 (-)m4aG4

III

I4ne0 m4ne0 F=0

Ii=0 mi=0 i=23

IV

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3350

T2IV

F4

IV

Fne0

Ii=0 mi=0 i=234

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3450

2 2 I 2 II 2 III 2 IVT T T T T= + + +

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3550

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150983145983150 983156983144983141 983142983145983143983157983154983141983086 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983154983141 983155983144983151983159983150 983137983155 983151983142983155983141983156983156983141983140 983155983151 983137983155 983156983151 983143983141983150983141983154983137983156983141 983156983144983141

983140983161983150983137983149983145983139 983156983151983154983153983157983141 983151983142 983080983085983081983113α

983086 983108983154983137983159 983156983144983141 983142983154983141983141 983138983151983140983161 983140983145983137983143983154983137983149983155 983151983142 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141983149983141983139983144983137983150983145983155983149 983138983161 983137983152983152983148983161983145983150983143 983155983157983152983141983154983152983151983155983145983156983145983151983150 983152983154983145983150983139983145983152983148983141983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4050

983109 983148 983108 983156 983145 983156983144 983140 983145 983145 983143 983156 983124 983145 983140 983142 983156983144 983144 983145

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4150

983109983160983137983149983152983148983141 983108983141983156983141983154983149983145983150983141 983156983144983141 983140983154983145983158983145983150983143 983156983151983154983153983157983141 983124983090 983154983141983153983157983145983154983141983140 983142983151983154 983156983144983141 983149983141983139983144983137983150983145983155983149

983155983144983151983159983150 983145983150 983142983145983143983157983154983141 983145983150 983151983154983140983141983154 983156983151 983149983137983145983150983156983137983145983150 983156983144983141 983143983145983158983141983150 983149983151983156983145983151983150983086 983117983141983149983138983141983154 983090 983145983155

983138983137983148983137983150983139983141983140983086

2 3

2 4

23

3

O A 100 mm m 068 kg

O AB 90 m 10 kg

AB 400 mm I 00285 kgm

AG 100 mm

= =

= =

= =

=

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4250

2 2 2G3

G3

2B 1

3 G3

4 B

a 23927 14628 2804m s

14628tan 31

23927

a 2804 (211)

ˆa 2355u m s

m a (154)(2804) 4318 N

m a (132)(2355) 3109 N

= + =

α = α =

= micro

= minus

= =

= =

3 3

3

I (0012)(7670) 92 Nm

92

d 0021m4318

α = =

= =

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4350

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4450

983109983160983137983149983152983148983141

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4550

983109983160983137983149983152983148983141

983108983141983156983141983154983149983145983150983141 983156983144983141

983140983154983145983158983145983150983143 983156983151983154983153983157983141983124983090 983154983141983153983157983145983154983141983140 983142983151983154

983156983144983141 983152983157983149983152

983149983141983139983144983137983150983145983155983149983155983144983151983159983150 983145983150983142983145983143983157983154983141 983145983150 983151983154983140983141983154983156983151 983149983137983145983150983156983137983145983150

983156983144983141 983143983145983158983141983150983149983151983156983145983151983150983086983117983141983149983138983141983154 983090 983145983155983138983137983148983137983150983139983141983140983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 5050

Page 2: Theory of Machines Dynamic Analysis

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 250

DEFINITIONS

Dynamic Science that examines themotion of systems considering the

forces acting on the system

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 350

POINT MASS AND RIGID BODY

Point mass(particle) themass is considered to be

concentrated at the mass

center(Theoraticallyvolume=0)

Rigid body the mass isconsidered to be

distributed over the

volume

m

m

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 450

RIGID BODY

Assumed as system of point masses

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 550

SYSTEM OF PARTICLES(SYSTEM OF POINT MASSES)

ext

i ij i ii i j i

m + =sum sum sum sumF F a

iji j 0

=

sum sumF

exti i i

i i

m =sum sumF a

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 650

DYNAMIC OF SYSTEM OF PARTICLES

i G i i

i

G i i

( m ) m

m M

M m

=

=

=

sum sum

sum

sum

r r

r r

Definition of center of mass

x

y

z

mi

ri

rG

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 750

DYNAMIC OF SYSTEM OF PARTICLES

ext i G

i i

ext G

i

( m ) 0

M 0

minus =

minus =

sum sum

sum

F a

F a

ext

i i ii i

m =

sum sumF a

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 850

DrsquoALEMBERTrsquoS PRINCIPLE

=

+ = 0

Newtonrsquos 2nd law

DrsquoAlembertrsquosprinciple

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 950

ANGULAR MOMENTUM

MOMENT OF MOMENTUM

O i i ii (m )

= times

sumH r v

O

i i i i i ii i

d d

(m ) (m )dt dt= times + times

sum sum

Hr V r V

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1050

ANGULAR MOMENTUM

MOMENT OF MOMENTUM

extO i i

d

dt F= times

sumH

r

O i i i i i i

i i

d d(m ) (m )dt dt

= times + timessum sum

H

r V r V0

O i i i

i

d(m )

dt= times

sumH

r a

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1150

O

ANGULAR MOMENTUM

MOMENT OF MOMENTUM

extOi i

d

dt

F= timessumH

r

O 0

d

dt=

sumH

M

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1250

DYNAMIC EQUILIBRIUM OF

RIGID BODY

G i i G i i

2i i i

( ) [ ( x )m ]

m

= times + times

minus times

sum sum sumsum

iM r m a r α r

r ω r

2i G i i= + times minus timesa a α r ω r

Letrsquos assume point O is

coincident with GO

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1350

DYNAMIC EQUILIBRIUM OF

RIGID BODY

2G i i G i i i i i( ) [ ( x )m ] m= times + times minus timessum sum sum sumi

M r m a r α r r ω r

00

2

G i i

( m )=

sum sumM r α

G I=sum M α

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1450

DYNAMIC EQUILIBRIUM OF

RIGID BODY

G Gext ( m) M= =

sum sumF a a

G I=

sumM α

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1550

DYNAMIC EQUILIBRIUM OF

RIGID BODY

=

+ =0

Newtonrsquos

2nd law

DrsquoAlembertrsquos

principle

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1650

CENTER OF PERCUSSION

Example At t=0 force P is

acted upon the beamsuspended as seen in

figure

Determine the values ofdistances p and q in

order to make the

horizontal component of

the reaction force at Ozero IGG=mk 2

A

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1750

2I mk = Ga p( )= α larr

Gma m p( )minus = minus α rarr

AM 0=sum2

[m( p)]q (mk )x 0α minus =

2

m pq mk 0α minus α =

22 k

pq k qp

= =

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1850

2pq k =

O and A arecenter of

percussions

AA

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1950

Example The cylinder on

the 60˚ oblique plane is

pulled up by a rope with

tension force T at time t=0

as seen in figure

Calculate the necessarytension force T to pull the

cylinder up the oblique

plane so as to make theacceleration of the center

of mass (G) 1 ms2 (parallel to the

oblique plane)

Note Assume that there isno slippage between the

cylinder and the oblique

plane2R 400 mm r=200 mm I=03kg m= m=200 kg

600

R

r

G

T

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2050

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2150

Example

Determine the driving torque T2 to be applied to the crank (2) in

the Scotch-Yoke mechanism shown in figure in order to

maintain the given motion

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2250

Letrsquos draw the free body diagrams of the members of the mechanism

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2350

USE OF GRAPHICAL METHOD

IN DYNAMIC ANALYSIS

Transforming a 3 force+1 moment member into a

3 force member

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2450

=

=

=

=

Determining

the single force

equivalent of a

moment and a

force system

The arrow of theinertia force(ndash)maG must point

the samedirection with the

direction of theinertia torque (-)Iα

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2550

SUPERPOSITION PRINCIPLE

Applicable to linear systems

F(a)= A F(b)=B F(a+b)= A+B

k

b

k

a

k

a+b

k

A B A+B

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2650

DYNAMIC ANALYSIS BY USING

GRAPHICAL METHOD

(1) Perform position analysis to obtain distances and angles

(2) Perform kinematic analysis to obtain accelerations of

centroids and angular acclerations

(3) Determine dynamic forces(-maG) and dynamic moments

(-Iα) acting on the members

(4) For i th member assume mine0 and Iine0 but mass and

mass moment of inertia (mmoi) of all other members are

zero Do it for all members For each case draw FBD of

the members of the mechanism

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2750

DYNAMIC ANALYSIS BY USING

GRAPHICAL METHOD

(5) Assume all masses and mmoirsquos are zero but F ne 0For this case draw the FBD of all mechanism

members

(6) Calculate T2 in all of the cases in steps 4 and 5(7) Superpose all T2 rsquos calculated in step 6 so as to

obtain total torque T2

2 2 I 2 II 2 III 2 IVT T T T T= + + +

E l

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2850

Example

E l

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2950

Example

I

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3050

(-)m2a

G2

T2I

2

I

I2ne0 m2ne0 F=0

Ii=0 mi=0 i=34

II

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3150

II

I3ne0 m3ne0 F=0

mi=0 Ii= i=24

III

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3250

T2III 4 (-)m4aG4

III

I4ne0 m4ne0 F=0

Ii=0 mi=0 i=23

IV

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3350

T2IV

F4

IV

Fne0

Ii=0 mi=0 i=234

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3450

2 2 I 2 II 2 III 2 IVT T T T T= + + +

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3550

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150983145983150 983156983144983141 983142983145983143983157983154983141983086 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983154983141 983155983144983151983159983150 983137983155 983151983142983155983141983156983156983141983140 983155983151 983137983155 983156983151 983143983141983150983141983154983137983156983141 983156983144983141

983140983161983150983137983149983145983139 983156983151983154983153983157983141 983151983142 983080983085983081983113α

983086 983108983154983137983159 983156983144983141 983142983154983141983141 983138983151983140983161 983140983145983137983143983154983137983149983155 983151983142 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141983149983141983139983144983137983150983145983155983149 983138983161 983137983152983152983148983161983145983150983143 983155983157983152983141983154983152983151983155983145983156983145983151983150 983152983154983145983150983139983145983152983148983141983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4050

983109 983148 983108 983156 983145 983156983144 983140 983145 983145 983143 983156 983124 983145 983140 983142 983156983144 983144 983145

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4150

983109983160983137983149983152983148983141 983108983141983156983141983154983149983145983150983141 983156983144983141 983140983154983145983158983145983150983143 983156983151983154983153983157983141 983124983090 983154983141983153983157983145983154983141983140 983142983151983154 983156983144983141 983149983141983139983144983137983150983145983155983149

983155983144983151983159983150 983145983150 983142983145983143983157983154983141 983145983150 983151983154983140983141983154 983156983151 983149983137983145983150983156983137983145983150 983156983144983141 983143983145983158983141983150 983149983151983156983145983151983150983086 983117983141983149983138983141983154 983090 983145983155

983138983137983148983137983150983139983141983140983086

2 3

2 4

23

3

O A 100 mm m 068 kg

O AB 90 m 10 kg

AB 400 mm I 00285 kgm

AG 100 mm

= =

= =

= =

=

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4250

2 2 2G3

G3

2B 1

3 G3

4 B

a 23927 14628 2804m s

14628tan 31

23927

a 2804 (211)

ˆa 2355u m s

m a (154)(2804) 4318 N

m a (132)(2355) 3109 N

= + =

α = α =

= micro

= minus

= =

= =

3 3

3

I (0012)(7670) 92 Nm

92

d 0021m4318

α = =

= =

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4350

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4450

983109983160983137983149983152983148983141

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4550

983109983160983137983149983152983148983141

983108983141983156983141983154983149983145983150983141 983156983144983141

983140983154983145983158983145983150983143 983156983151983154983153983157983141983124983090 983154983141983153983157983145983154983141983140 983142983151983154

983156983144983141 983152983157983149983152

983149983141983139983144983137983150983145983155983149983155983144983151983159983150 983145983150983142983145983143983157983154983141 983145983150 983151983154983140983141983154983156983151 983149983137983145983150983156983137983145983150

983156983144983141 983143983145983158983141983150983149983151983156983145983151983150983086983117983141983149983138983141983154 983090 983145983155983138983137983148983137983150983139983141983140983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 5050

Page 3: Theory of Machines Dynamic Analysis

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 350

POINT MASS AND RIGID BODY

Point mass(particle) themass is considered to be

concentrated at the mass

center(Theoraticallyvolume=0)

Rigid body the mass isconsidered to be

distributed over the

volume

m

m

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 450

RIGID BODY

Assumed as system of point masses

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 550

SYSTEM OF PARTICLES(SYSTEM OF POINT MASSES)

ext

i ij i ii i j i

m + =sum sum sum sumF F a

iji j 0

=

sum sumF

exti i i

i i

m =sum sumF a

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 650

DYNAMIC OF SYSTEM OF PARTICLES

i G i i

i

G i i

( m ) m

m M

M m

=

=

=

sum sum

sum

sum

r r

r r

Definition of center of mass

x

y

z

mi

ri

rG

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 750

DYNAMIC OF SYSTEM OF PARTICLES

ext i G

i i

ext G

i

( m ) 0

M 0

minus =

minus =

sum sum

sum

F a

F a

ext

i i ii i

m =

sum sumF a

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 850

DrsquoALEMBERTrsquoS PRINCIPLE

=

+ = 0

Newtonrsquos 2nd law

DrsquoAlembertrsquosprinciple

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 950

ANGULAR MOMENTUM

MOMENT OF MOMENTUM

O i i ii (m )

= times

sumH r v

O

i i i i i ii i

d d

(m ) (m )dt dt= times + times

sum sum

Hr V r V

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1050

ANGULAR MOMENTUM

MOMENT OF MOMENTUM

extO i i

d

dt F= times

sumH

r

O i i i i i i

i i

d d(m ) (m )dt dt

= times + timessum sum

H

r V r V0

O i i i

i

d(m )

dt= times

sumH

r a

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1150

O

ANGULAR MOMENTUM

MOMENT OF MOMENTUM

extOi i

d

dt

F= timessumH

r

O 0

d

dt=

sumH

M

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1250

DYNAMIC EQUILIBRIUM OF

RIGID BODY

G i i G i i

2i i i

( ) [ ( x )m ]

m

= times + times

minus times

sum sum sumsum

iM r m a r α r

r ω r

2i G i i= + times minus timesa a α r ω r

Letrsquos assume point O is

coincident with GO

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1350

DYNAMIC EQUILIBRIUM OF

RIGID BODY

2G i i G i i i i i( ) [ ( x )m ] m= times + times minus timessum sum sum sumi

M r m a r α r r ω r

00

2

G i i

( m )=

sum sumM r α

G I=sum M α

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1450

DYNAMIC EQUILIBRIUM OF

RIGID BODY

G Gext ( m) M= =

sum sumF a a

G I=

sumM α

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1550

DYNAMIC EQUILIBRIUM OF

RIGID BODY

=

+ =0

Newtonrsquos

2nd law

DrsquoAlembertrsquos

principle

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1650

CENTER OF PERCUSSION

Example At t=0 force P is

acted upon the beamsuspended as seen in

figure

Determine the values ofdistances p and q in

order to make the

horizontal component of

the reaction force at Ozero IGG=mk 2

A

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1750

2I mk = Ga p( )= α larr

Gma m p( )minus = minus α rarr

AM 0=sum2

[m( p)]q (mk )x 0α minus =

2

m pq mk 0α minus α =

22 k

pq k qp

= =

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1850

2pq k =

O and A arecenter of

percussions

AA

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1950

Example The cylinder on

the 60˚ oblique plane is

pulled up by a rope with

tension force T at time t=0

as seen in figure

Calculate the necessarytension force T to pull the

cylinder up the oblique

plane so as to make theacceleration of the center

of mass (G) 1 ms2 (parallel to the

oblique plane)

Note Assume that there isno slippage between the

cylinder and the oblique

plane2R 400 mm r=200 mm I=03kg m= m=200 kg

600

R

r

G

T

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2050

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2150

Example

Determine the driving torque T2 to be applied to the crank (2) in

the Scotch-Yoke mechanism shown in figure in order to

maintain the given motion

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2250

Letrsquos draw the free body diagrams of the members of the mechanism

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2350

USE OF GRAPHICAL METHOD

IN DYNAMIC ANALYSIS

Transforming a 3 force+1 moment member into a

3 force member

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2450

=

=

=

=

Determining

the single force

equivalent of a

moment and a

force system

The arrow of theinertia force(ndash)maG must point

the samedirection with the

direction of theinertia torque (-)Iα

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2550

SUPERPOSITION PRINCIPLE

Applicable to linear systems

F(a)= A F(b)=B F(a+b)= A+B

k

b

k

a

k

a+b

k

A B A+B

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2650

DYNAMIC ANALYSIS BY USING

GRAPHICAL METHOD

(1) Perform position analysis to obtain distances and angles

(2) Perform kinematic analysis to obtain accelerations of

centroids and angular acclerations

(3) Determine dynamic forces(-maG) and dynamic moments

(-Iα) acting on the members

(4) For i th member assume mine0 and Iine0 but mass and

mass moment of inertia (mmoi) of all other members are

zero Do it for all members For each case draw FBD of

the members of the mechanism

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2750

DYNAMIC ANALYSIS BY USING

GRAPHICAL METHOD

(5) Assume all masses and mmoirsquos are zero but F ne 0For this case draw the FBD of all mechanism

members

(6) Calculate T2 in all of the cases in steps 4 and 5(7) Superpose all T2 rsquos calculated in step 6 so as to

obtain total torque T2

2 2 I 2 II 2 III 2 IVT T T T T= + + +

E l

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2850

Example

E l

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2950

Example

I

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3050

(-)m2a

G2

T2I

2

I

I2ne0 m2ne0 F=0

Ii=0 mi=0 i=34

II

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3150

II

I3ne0 m3ne0 F=0

mi=0 Ii= i=24

III

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3250

T2III 4 (-)m4aG4

III

I4ne0 m4ne0 F=0

Ii=0 mi=0 i=23

IV

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3350

T2IV

F4

IV

Fne0

Ii=0 mi=0 i=234

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3450

2 2 I 2 II 2 III 2 IVT T T T T= + + +

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3550

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150983145983150 983156983144983141 983142983145983143983157983154983141983086 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983154983141 983155983144983151983159983150 983137983155 983151983142983155983141983156983156983141983140 983155983151 983137983155 983156983151 983143983141983150983141983154983137983156983141 983156983144983141

983140983161983150983137983149983145983139 983156983151983154983153983157983141 983151983142 983080983085983081983113α

983086 983108983154983137983159 983156983144983141 983142983154983141983141 983138983151983140983161 983140983145983137983143983154983137983149983155 983151983142 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141983149983141983139983144983137983150983145983155983149 983138983161 983137983152983152983148983161983145983150983143 983155983157983152983141983154983152983151983155983145983156983145983151983150 983152983154983145983150983139983145983152983148983141983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4050

983109 983148 983108 983156 983145 983156983144 983140 983145 983145 983143 983156 983124 983145 983140 983142 983156983144 983144 983145

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4150

983109983160983137983149983152983148983141 983108983141983156983141983154983149983145983150983141 983156983144983141 983140983154983145983158983145983150983143 983156983151983154983153983157983141 983124983090 983154983141983153983157983145983154983141983140 983142983151983154 983156983144983141 983149983141983139983144983137983150983145983155983149

983155983144983151983159983150 983145983150 983142983145983143983157983154983141 983145983150 983151983154983140983141983154 983156983151 983149983137983145983150983156983137983145983150 983156983144983141 983143983145983158983141983150 983149983151983156983145983151983150983086 983117983141983149983138983141983154 983090 983145983155

983138983137983148983137983150983139983141983140983086

2 3

2 4

23

3

O A 100 mm m 068 kg

O AB 90 m 10 kg

AB 400 mm I 00285 kgm

AG 100 mm

= =

= =

= =

=

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4250

2 2 2G3

G3

2B 1

3 G3

4 B

a 23927 14628 2804m s

14628tan 31

23927

a 2804 (211)

ˆa 2355u m s

m a (154)(2804) 4318 N

m a (132)(2355) 3109 N

= + =

α = α =

= micro

= minus

= =

= =

3 3

3

I (0012)(7670) 92 Nm

92

d 0021m4318

α = =

= =

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4350

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4450

983109983160983137983149983152983148983141

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4550

983109983160983137983149983152983148983141

983108983141983156983141983154983149983145983150983141 983156983144983141

983140983154983145983158983145983150983143 983156983151983154983153983157983141983124983090 983154983141983153983157983145983154983141983140 983142983151983154

983156983144983141 983152983157983149983152

983149983141983139983144983137983150983145983155983149983155983144983151983159983150 983145983150983142983145983143983157983154983141 983145983150 983151983154983140983141983154983156983151 983149983137983145983150983156983137983145983150

983156983144983141 983143983145983158983141983150983149983151983156983145983151983150983086983117983141983149983138983141983154 983090 983145983155983138983137983148983137983150983139983141983140983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 5050

Page 4: Theory of Machines Dynamic Analysis

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 450

RIGID BODY

Assumed as system of point masses

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 550

SYSTEM OF PARTICLES(SYSTEM OF POINT MASSES)

ext

i ij i ii i j i

m + =sum sum sum sumF F a

iji j 0

=

sum sumF

exti i i

i i

m =sum sumF a

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 650

DYNAMIC OF SYSTEM OF PARTICLES

i G i i

i

G i i

( m ) m

m M

M m

=

=

=

sum sum

sum

sum

r r

r r

Definition of center of mass

x

y

z

mi

ri

rG

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 750

DYNAMIC OF SYSTEM OF PARTICLES

ext i G

i i

ext G

i

( m ) 0

M 0

minus =

minus =

sum sum

sum

F a

F a

ext

i i ii i

m =

sum sumF a

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 850

DrsquoALEMBERTrsquoS PRINCIPLE

=

+ = 0

Newtonrsquos 2nd law

DrsquoAlembertrsquosprinciple

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 950

ANGULAR MOMENTUM

MOMENT OF MOMENTUM

O i i ii (m )

= times

sumH r v

O

i i i i i ii i

d d

(m ) (m )dt dt= times + times

sum sum

Hr V r V

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1050

ANGULAR MOMENTUM

MOMENT OF MOMENTUM

extO i i

d

dt F= times

sumH

r

O i i i i i i

i i

d d(m ) (m )dt dt

= times + timessum sum

H

r V r V0

O i i i

i

d(m )

dt= times

sumH

r a

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1150

O

ANGULAR MOMENTUM

MOMENT OF MOMENTUM

extOi i

d

dt

F= timessumH

r

O 0

d

dt=

sumH

M

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1250

DYNAMIC EQUILIBRIUM OF

RIGID BODY

G i i G i i

2i i i

( ) [ ( x )m ]

m

= times + times

minus times

sum sum sumsum

iM r m a r α r

r ω r

2i G i i= + times minus timesa a α r ω r

Letrsquos assume point O is

coincident with GO

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1350

DYNAMIC EQUILIBRIUM OF

RIGID BODY

2G i i G i i i i i( ) [ ( x )m ] m= times + times minus timessum sum sum sumi

M r m a r α r r ω r

00

2

G i i

( m )=

sum sumM r α

G I=sum M α

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1450

DYNAMIC EQUILIBRIUM OF

RIGID BODY

G Gext ( m) M= =

sum sumF a a

G I=

sumM α

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1550

DYNAMIC EQUILIBRIUM OF

RIGID BODY

=

+ =0

Newtonrsquos

2nd law

DrsquoAlembertrsquos

principle

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1650

CENTER OF PERCUSSION

Example At t=0 force P is

acted upon the beamsuspended as seen in

figure

Determine the values ofdistances p and q in

order to make the

horizontal component of

the reaction force at Ozero IGG=mk 2

A

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1750

2I mk = Ga p( )= α larr

Gma m p( )minus = minus α rarr

AM 0=sum2

[m( p)]q (mk )x 0α minus =

2

m pq mk 0α minus α =

22 k

pq k qp

= =

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1850

2pq k =

O and A arecenter of

percussions

AA

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1950

Example The cylinder on

the 60˚ oblique plane is

pulled up by a rope with

tension force T at time t=0

as seen in figure

Calculate the necessarytension force T to pull the

cylinder up the oblique

plane so as to make theacceleration of the center

of mass (G) 1 ms2 (parallel to the

oblique plane)

Note Assume that there isno slippage between the

cylinder and the oblique

plane2R 400 mm r=200 mm I=03kg m= m=200 kg

600

R

r

G

T

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2050

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2150

Example

Determine the driving torque T2 to be applied to the crank (2) in

the Scotch-Yoke mechanism shown in figure in order to

maintain the given motion

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2250

Letrsquos draw the free body diagrams of the members of the mechanism

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2350

USE OF GRAPHICAL METHOD

IN DYNAMIC ANALYSIS

Transforming a 3 force+1 moment member into a

3 force member

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2450

=

=

=

=

Determining

the single force

equivalent of a

moment and a

force system

The arrow of theinertia force(ndash)maG must point

the samedirection with the

direction of theinertia torque (-)Iα

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2550

SUPERPOSITION PRINCIPLE

Applicable to linear systems

F(a)= A F(b)=B F(a+b)= A+B

k

b

k

a

k

a+b

k

A B A+B

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2650

DYNAMIC ANALYSIS BY USING

GRAPHICAL METHOD

(1) Perform position analysis to obtain distances and angles

(2) Perform kinematic analysis to obtain accelerations of

centroids and angular acclerations

(3) Determine dynamic forces(-maG) and dynamic moments

(-Iα) acting on the members

(4) For i th member assume mine0 and Iine0 but mass and

mass moment of inertia (mmoi) of all other members are

zero Do it for all members For each case draw FBD of

the members of the mechanism

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2750

DYNAMIC ANALYSIS BY USING

GRAPHICAL METHOD

(5) Assume all masses and mmoirsquos are zero but F ne 0For this case draw the FBD of all mechanism

members

(6) Calculate T2 in all of the cases in steps 4 and 5(7) Superpose all T2 rsquos calculated in step 6 so as to

obtain total torque T2

2 2 I 2 II 2 III 2 IVT T T T T= + + +

E l

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2850

Example

E l

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2950

Example

I

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3050

(-)m2a

G2

T2I

2

I

I2ne0 m2ne0 F=0

Ii=0 mi=0 i=34

II

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3150

II

I3ne0 m3ne0 F=0

mi=0 Ii= i=24

III

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3250

T2III 4 (-)m4aG4

III

I4ne0 m4ne0 F=0

Ii=0 mi=0 i=23

IV

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3350

T2IV

F4

IV

Fne0

Ii=0 mi=0 i=234

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3450

2 2 I 2 II 2 III 2 IVT T T T T= + + +

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3550

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150983145983150 983156983144983141 983142983145983143983157983154983141983086 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983154983141 983155983144983151983159983150 983137983155 983151983142983155983141983156983156983141983140 983155983151 983137983155 983156983151 983143983141983150983141983154983137983156983141 983156983144983141

983140983161983150983137983149983145983139 983156983151983154983153983157983141 983151983142 983080983085983081983113α

983086 983108983154983137983159 983156983144983141 983142983154983141983141 983138983151983140983161 983140983145983137983143983154983137983149983155 983151983142 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141983149983141983139983144983137983150983145983155983149 983138983161 983137983152983152983148983161983145983150983143 983155983157983152983141983154983152983151983155983145983156983145983151983150 983152983154983145983150983139983145983152983148983141983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4050

983109 983148 983108 983156 983145 983156983144 983140 983145 983145 983143 983156 983124 983145 983140 983142 983156983144 983144 983145

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4150

983109983160983137983149983152983148983141 983108983141983156983141983154983149983145983150983141 983156983144983141 983140983154983145983158983145983150983143 983156983151983154983153983157983141 983124983090 983154983141983153983157983145983154983141983140 983142983151983154 983156983144983141 983149983141983139983144983137983150983145983155983149

983155983144983151983159983150 983145983150 983142983145983143983157983154983141 983145983150 983151983154983140983141983154 983156983151 983149983137983145983150983156983137983145983150 983156983144983141 983143983145983158983141983150 983149983151983156983145983151983150983086 983117983141983149983138983141983154 983090 983145983155

983138983137983148983137983150983139983141983140983086

2 3

2 4

23

3

O A 100 mm m 068 kg

O AB 90 m 10 kg

AB 400 mm I 00285 kgm

AG 100 mm

= =

= =

= =

=

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4250

2 2 2G3

G3

2B 1

3 G3

4 B

a 23927 14628 2804m s

14628tan 31

23927

a 2804 (211)

ˆa 2355u m s

m a (154)(2804) 4318 N

m a (132)(2355) 3109 N

= + =

α = α =

= micro

= minus

= =

= =

3 3

3

I (0012)(7670) 92 Nm

92

d 0021m4318

α = =

= =

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4350

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4450

983109983160983137983149983152983148983141

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4550

983109983160983137983149983152983148983141

983108983141983156983141983154983149983145983150983141 983156983144983141

983140983154983145983158983145983150983143 983156983151983154983153983157983141983124983090 983154983141983153983157983145983154983141983140 983142983151983154

983156983144983141 983152983157983149983152

983149983141983139983144983137983150983145983155983149983155983144983151983159983150 983145983150983142983145983143983157983154983141 983145983150 983151983154983140983141983154983156983151 983149983137983145983150983156983137983145983150

983156983144983141 983143983145983158983141983150983149983151983156983145983151983150983086983117983141983149983138983141983154 983090 983145983155983138983137983148983137983150983139983141983140983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 5050

Page 5: Theory of Machines Dynamic Analysis

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 550

SYSTEM OF PARTICLES(SYSTEM OF POINT MASSES)

ext

i ij i ii i j i

m + =sum sum sum sumF F a

iji j 0

=

sum sumF

exti i i

i i

m =sum sumF a

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 650

DYNAMIC OF SYSTEM OF PARTICLES

i G i i

i

G i i

( m ) m

m M

M m

=

=

=

sum sum

sum

sum

r r

r r

Definition of center of mass

x

y

z

mi

ri

rG

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 750

DYNAMIC OF SYSTEM OF PARTICLES

ext i G

i i

ext G

i

( m ) 0

M 0

minus =

minus =

sum sum

sum

F a

F a

ext

i i ii i

m =

sum sumF a

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 850

DrsquoALEMBERTrsquoS PRINCIPLE

=

+ = 0

Newtonrsquos 2nd law

DrsquoAlembertrsquosprinciple

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 950

ANGULAR MOMENTUM

MOMENT OF MOMENTUM

O i i ii (m )

= times

sumH r v

O

i i i i i ii i

d d

(m ) (m )dt dt= times + times

sum sum

Hr V r V

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1050

ANGULAR MOMENTUM

MOMENT OF MOMENTUM

extO i i

d

dt F= times

sumH

r

O i i i i i i

i i

d d(m ) (m )dt dt

= times + timessum sum

H

r V r V0

O i i i

i

d(m )

dt= times

sumH

r a

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1150

O

ANGULAR MOMENTUM

MOMENT OF MOMENTUM

extOi i

d

dt

F= timessumH

r

O 0

d

dt=

sumH

M

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1250

DYNAMIC EQUILIBRIUM OF

RIGID BODY

G i i G i i

2i i i

( ) [ ( x )m ]

m

= times + times

minus times

sum sum sumsum

iM r m a r α r

r ω r

2i G i i= + times minus timesa a α r ω r

Letrsquos assume point O is

coincident with GO

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1350

DYNAMIC EQUILIBRIUM OF

RIGID BODY

2G i i G i i i i i( ) [ ( x )m ] m= times + times minus timessum sum sum sumi

M r m a r α r r ω r

00

2

G i i

( m )=

sum sumM r α

G I=sum M α

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1450

DYNAMIC EQUILIBRIUM OF

RIGID BODY

G Gext ( m) M= =

sum sumF a a

G I=

sumM α

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1550

DYNAMIC EQUILIBRIUM OF

RIGID BODY

=

+ =0

Newtonrsquos

2nd law

DrsquoAlembertrsquos

principle

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1650

CENTER OF PERCUSSION

Example At t=0 force P is

acted upon the beamsuspended as seen in

figure

Determine the values ofdistances p and q in

order to make the

horizontal component of

the reaction force at Ozero IGG=mk 2

A

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1750

2I mk = Ga p( )= α larr

Gma m p( )minus = minus α rarr

AM 0=sum2

[m( p)]q (mk )x 0α minus =

2

m pq mk 0α minus α =

22 k

pq k qp

= =

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1850

2pq k =

O and A arecenter of

percussions

AA

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1950

Example The cylinder on

the 60˚ oblique plane is

pulled up by a rope with

tension force T at time t=0

as seen in figure

Calculate the necessarytension force T to pull the

cylinder up the oblique

plane so as to make theacceleration of the center

of mass (G) 1 ms2 (parallel to the

oblique plane)

Note Assume that there isno slippage between the

cylinder and the oblique

plane2R 400 mm r=200 mm I=03kg m= m=200 kg

600

R

r

G

T

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2050

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2150

Example

Determine the driving torque T2 to be applied to the crank (2) in

the Scotch-Yoke mechanism shown in figure in order to

maintain the given motion

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2250

Letrsquos draw the free body diagrams of the members of the mechanism

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2350

USE OF GRAPHICAL METHOD

IN DYNAMIC ANALYSIS

Transforming a 3 force+1 moment member into a

3 force member

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2450

=

=

=

=

Determining

the single force

equivalent of a

moment and a

force system

The arrow of theinertia force(ndash)maG must point

the samedirection with the

direction of theinertia torque (-)Iα

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2550

SUPERPOSITION PRINCIPLE

Applicable to linear systems

F(a)= A F(b)=B F(a+b)= A+B

k

b

k

a

k

a+b

k

A B A+B

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2650

DYNAMIC ANALYSIS BY USING

GRAPHICAL METHOD

(1) Perform position analysis to obtain distances and angles

(2) Perform kinematic analysis to obtain accelerations of

centroids and angular acclerations

(3) Determine dynamic forces(-maG) and dynamic moments

(-Iα) acting on the members

(4) For i th member assume mine0 and Iine0 but mass and

mass moment of inertia (mmoi) of all other members are

zero Do it for all members For each case draw FBD of

the members of the mechanism

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2750

DYNAMIC ANALYSIS BY USING

GRAPHICAL METHOD

(5) Assume all masses and mmoirsquos are zero but F ne 0For this case draw the FBD of all mechanism

members

(6) Calculate T2 in all of the cases in steps 4 and 5(7) Superpose all T2 rsquos calculated in step 6 so as to

obtain total torque T2

2 2 I 2 II 2 III 2 IVT T T T T= + + +

E l

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2850

Example

E l

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2950

Example

I

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3050

(-)m2a

G2

T2I

2

I

I2ne0 m2ne0 F=0

Ii=0 mi=0 i=34

II

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3150

II

I3ne0 m3ne0 F=0

mi=0 Ii= i=24

III

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3250

T2III 4 (-)m4aG4

III

I4ne0 m4ne0 F=0

Ii=0 mi=0 i=23

IV

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3350

T2IV

F4

IV

Fne0

Ii=0 mi=0 i=234

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3450

2 2 I 2 II 2 III 2 IVT T T T T= + + +

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3550

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150983145983150 983156983144983141 983142983145983143983157983154983141983086 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983154983141 983155983144983151983159983150 983137983155 983151983142983155983141983156983156983141983140 983155983151 983137983155 983156983151 983143983141983150983141983154983137983156983141 983156983144983141

983140983161983150983137983149983145983139 983156983151983154983153983157983141 983151983142 983080983085983081983113α

983086 983108983154983137983159 983156983144983141 983142983154983141983141 983138983151983140983161 983140983145983137983143983154983137983149983155 983151983142 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141983149983141983139983144983137983150983145983155983149 983138983161 983137983152983152983148983161983145983150983143 983155983157983152983141983154983152983151983155983145983156983145983151983150 983152983154983145983150983139983145983152983148983141983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4050

983109 983148 983108 983156 983145 983156983144 983140 983145 983145 983143 983156 983124 983145 983140 983142 983156983144 983144 983145

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4150

983109983160983137983149983152983148983141 983108983141983156983141983154983149983145983150983141 983156983144983141 983140983154983145983158983145983150983143 983156983151983154983153983157983141 983124983090 983154983141983153983157983145983154983141983140 983142983151983154 983156983144983141 983149983141983139983144983137983150983145983155983149

983155983144983151983159983150 983145983150 983142983145983143983157983154983141 983145983150 983151983154983140983141983154 983156983151 983149983137983145983150983156983137983145983150 983156983144983141 983143983145983158983141983150 983149983151983156983145983151983150983086 983117983141983149983138983141983154 983090 983145983155

983138983137983148983137983150983139983141983140983086

2 3

2 4

23

3

O A 100 mm m 068 kg

O AB 90 m 10 kg

AB 400 mm I 00285 kgm

AG 100 mm

= =

= =

= =

=

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4250

2 2 2G3

G3

2B 1

3 G3

4 B

a 23927 14628 2804m s

14628tan 31

23927

a 2804 (211)

ˆa 2355u m s

m a (154)(2804) 4318 N

m a (132)(2355) 3109 N

= + =

α = α =

= micro

= minus

= =

= =

3 3

3

I (0012)(7670) 92 Nm

92

d 0021m4318

α = =

= =

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4350

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4450

983109983160983137983149983152983148983141

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4550

983109983160983137983149983152983148983141

983108983141983156983141983154983149983145983150983141 983156983144983141

983140983154983145983158983145983150983143 983156983151983154983153983157983141983124983090 983154983141983153983157983145983154983141983140 983142983151983154

983156983144983141 983152983157983149983152

983149983141983139983144983137983150983145983155983149983155983144983151983159983150 983145983150983142983145983143983157983154983141 983145983150 983151983154983140983141983154983156983151 983149983137983145983150983156983137983145983150

983156983144983141 983143983145983158983141983150983149983151983156983145983151983150983086983117983141983149983138983141983154 983090 983145983155983138983137983148983137983150983139983141983140983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 5050

Page 6: Theory of Machines Dynamic Analysis

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 650

DYNAMIC OF SYSTEM OF PARTICLES

i G i i

i

G i i

( m ) m

m M

M m

=

=

=

sum sum

sum

sum

r r

r r

Definition of center of mass

x

y

z

mi

ri

rG

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 750

DYNAMIC OF SYSTEM OF PARTICLES

ext i G

i i

ext G

i

( m ) 0

M 0

minus =

minus =

sum sum

sum

F a

F a

ext

i i ii i

m =

sum sumF a

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 850

DrsquoALEMBERTrsquoS PRINCIPLE

=

+ = 0

Newtonrsquos 2nd law

DrsquoAlembertrsquosprinciple

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 950

ANGULAR MOMENTUM

MOMENT OF MOMENTUM

O i i ii (m )

= times

sumH r v

O

i i i i i ii i

d d

(m ) (m )dt dt= times + times

sum sum

Hr V r V

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1050

ANGULAR MOMENTUM

MOMENT OF MOMENTUM

extO i i

d

dt F= times

sumH

r

O i i i i i i

i i

d d(m ) (m )dt dt

= times + timessum sum

H

r V r V0

O i i i

i

d(m )

dt= times

sumH

r a

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1150

O

ANGULAR MOMENTUM

MOMENT OF MOMENTUM

extOi i

d

dt

F= timessumH

r

O 0

d

dt=

sumH

M

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1250

DYNAMIC EQUILIBRIUM OF

RIGID BODY

G i i G i i

2i i i

( ) [ ( x )m ]

m

= times + times

minus times

sum sum sumsum

iM r m a r α r

r ω r

2i G i i= + times minus timesa a α r ω r

Letrsquos assume point O is

coincident with GO

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1350

DYNAMIC EQUILIBRIUM OF

RIGID BODY

2G i i G i i i i i( ) [ ( x )m ] m= times + times minus timessum sum sum sumi

M r m a r α r r ω r

00

2

G i i

( m )=

sum sumM r α

G I=sum M α

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1450

DYNAMIC EQUILIBRIUM OF

RIGID BODY

G Gext ( m) M= =

sum sumF a a

G I=

sumM α

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1550

DYNAMIC EQUILIBRIUM OF

RIGID BODY

=

+ =0

Newtonrsquos

2nd law

DrsquoAlembertrsquos

principle

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1650

CENTER OF PERCUSSION

Example At t=0 force P is

acted upon the beamsuspended as seen in

figure

Determine the values ofdistances p and q in

order to make the

horizontal component of

the reaction force at Ozero IGG=mk 2

A

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1750

2I mk = Ga p( )= α larr

Gma m p( )minus = minus α rarr

AM 0=sum2

[m( p)]q (mk )x 0α minus =

2

m pq mk 0α minus α =

22 k

pq k qp

= =

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1850

2pq k =

O and A arecenter of

percussions

AA

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1950

Example The cylinder on

the 60˚ oblique plane is

pulled up by a rope with

tension force T at time t=0

as seen in figure

Calculate the necessarytension force T to pull the

cylinder up the oblique

plane so as to make theacceleration of the center

of mass (G) 1 ms2 (parallel to the

oblique plane)

Note Assume that there isno slippage between the

cylinder and the oblique

plane2R 400 mm r=200 mm I=03kg m= m=200 kg

600

R

r

G

T

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2050

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2150

Example

Determine the driving torque T2 to be applied to the crank (2) in

the Scotch-Yoke mechanism shown in figure in order to

maintain the given motion

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2250

Letrsquos draw the free body diagrams of the members of the mechanism

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2350

USE OF GRAPHICAL METHOD

IN DYNAMIC ANALYSIS

Transforming a 3 force+1 moment member into a

3 force member

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2450

=

=

=

=

Determining

the single force

equivalent of a

moment and a

force system

The arrow of theinertia force(ndash)maG must point

the samedirection with the

direction of theinertia torque (-)Iα

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2550

SUPERPOSITION PRINCIPLE

Applicable to linear systems

F(a)= A F(b)=B F(a+b)= A+B

k

b

k

a

k

a+b

k

A B A+B

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2650

DYNAMIC ANALYSIS BY USING

GRAPHICAL METHOD

(1) Perform position analysis to obtain distances and angles

(2) Perform kinematic analysis to obtain accelerations of

centroids and angular acclerations

(3) Determine dynamic forces(-maG) and dynamic moments

(-Iα) acting on the members

(4) For i th member assume mine0 and Iine0 but mass and

mass moment of inertia (mmoi) of all other members are

zero Do it for all members For each case draw FBD of

the members of the mechanism

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2750

DYNAMIC ANALYSIS BY USING

GRAPHICAL METHOD

(5) Assume all masses and mmoirsquos are zero but F ne 0For this case draw the FBD of all mechanism

members

(6) Calculate T2 in all of the cases in steps 4 and 5(7) Superpose all T2 rsquos calculated in step 6 so as to

obtain total torque T2

2 2 I 2 II 2 III 2 IVT T T T T= + + +

E l

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2850

Example

E l

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2950

Example

I

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3050

(-)m2a

G2

T2I

2

I

I2ne0 m2ne0 F=0

Ii=0 mi=0 i=34

II

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3150

II

I3ne0 m3ne0 F=0

mi=0 Ii= i=24

III

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3250

T2III 4 (-)m4aG4

III

I4ne0 m4ne0 F=0

Ii=0 mi=0 i=23

IV

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3350

T2IV

F4

IV

Fne0

Ii=0 mi=0 i=234

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3450

2 2 I 2 II 2 III 2 IVT T T T T= + + +

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3550

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150983145983150 983156983144983141 983142983145983143983157983154983141983086 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983154983141 983155983144983151983159983150 983137983155 983151983142983155983141983156983156983141983140 983155983151 983137983155 983156983151 983143983141983150983141983154983137983156983141 983156983144983141

983140983161983150983137983149983145983139 983156983151983154983153983157983141 983151983142 983080983085983081983113α

983086 983108983154983137983159 983156983144983141 983142983154983141983141 983138983151983140983161 983140983145983137983143983154983137983149983155 983151983142 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141983149983141983139983144983137983150983145983155983149 983138983161 983137983152983152983148983161983145983150983143 983155983157983152983141983154983152983151983155983145983156983145983151983150 983152983154983145983150983139983145983152983148983141983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4050

983109 983148 983108 983156 983145 983156983144 983140 983145 983145 983143 983156 983124 983145 983140 983142 983156983144 983144 983145

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4150

983109983160983137983149983152983148983141 983108983141983156983141983154983149983145983150983141 983156983144983141 983140983154983145983158983145983150983143 983156983151983154983153983157983141 983124983090 983154983141983153983157983145983154983141983140 983142983151983154 983156983144983141 983149983141983139983144983137983150983145983155983149

983155983144983151983159983150 983145983150 983142983145983143983157983154983141 983145983150 983151983154983140983141983154 983156983151 983149983137983145983150983156983137983145983150 983156983144983141 983143983145983158983141983150 983149983151983156983145983151983150983086 983117983141983149983138983141983154 983090 983145983155

983138983137983148983137983150983139983141983140983086

2 3

2 4

23

3

O A 100 mm m 068 kg

O AB 90 m 10 kg

AB 400 mm I 00285 kgm

AG 100 mm

= =

= =

= =

=

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4250

2 2 2G3

G3

2B 1

3 G3

4 B

a 23927 14628 2804m s

14628tan 31

23927

a 2804 (211)

ˆa 2355u m s

m a (154)(2804) 4318 N

m a (132)(2355) 3109 N

= + =

α = α =

= micro

= minus

= =

= =

3 3

3

I (0012)(7670) 92 Nm

92

d 0021m4318

α = =

= =

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4350

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4450

983109983160983137983149983152983148983141

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4550

983109983160983137983149983152983148983141

983108983141983156983141983154983149983145983150983141 983156983144983141

983140983154983145983158983145983150983143 983156983151983154983153983157983141983124983090 983154983141983153983157983145983154983141983140 983142983151983154

983156983144983141 983152983157983149983152

983149983141983139983144983137983150983145983155983149983155983144983151983159983150 983145983150983142983145983143983157983154983141 983145983150 983151983154983140983141983154983156983151 983149983137983145983150983156983137983145983150

983156983144983141 983143983145983158983141983150983149983151983156983145983151983150983086983117983141983149983138983141983154 983090 983145983155983138983137983148983137983150983139983141983140983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 5050

Page 7: Theory of Machines Dynamic Analysis

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 750

DYNAMIC OF SYSTEM OF PARTICLES

ext i G

i i

ext G

i

( m ) 0

M 0

minus =

minus =

sum sum

sum

F a

F a

ext

i i ii i

m =

sum sumF a

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 850

DrsquoALEMBERTrsquoS PRINCIPLE

=

+ = 0

Newtonrsquos 2nd law

DrsquoAlembertrsquosprinciple

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 950

ANGULAR MOMENTUM

MOMENT OF MOMENTUM

O i i ii (m )

= times

sumH r v

O

i i i i i ii i

d d

(m ) (m )dt dt= times + times

sum sum

Hr V r V

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1050

ANGULAR MOMENTUM

MOMENT OF MOMENTUM

extO i i

d

dt F= times

sumH

r

O i i i i i i

i i

d d(m ) (m )dt dt

= times + timessum sum

H

r V r V0

O i i i

i

d(m )

dt= times

sumH

r a

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1150

O

ANGULAR MOMENTUM

MOMENT OF MOMENTUM

extOi i

d

dt

F= timessumH

r

O 0

d

dt=

sumH

M

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1250

DYNAMIC EQUILIBRIUM OF

RIGID BODY

G i i G i i

2i i i

( ) [ ( x )m ]

m

= times + times

minus times

sum sum sumsum

iM r m a r α r

r ω r

2i G i i= + times minus timesa a α r ω r

Letrsquos assume point O is

coincident with GO

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1350

DYNAMIC EQUILIBRIUM OF

RIGID BODY

2G i i G i i i i i( ) [ ( x )m ] m= times + times minus timessum sum sum sumi

M r m a r α r r ω r

00

2

G i i

( m )=

sum sumM r α

G I=sum M α

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1450

DYNAMIC EQUILIBRIUM OF

RIGID BODY

G Gext ( m) M= =

sum sumF a a

G I=

sumM α

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1550

DYNAMIC EQUILIBRIUM OF

RIGID BODY

=

+ =0

Newtonrsquos

2nd law

DrsquoAlembertrsquos

principle

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1650

CENTER OF PERCUSSION

Example At t=0 force P is

acted upon the beamsuspended as seen in

figure

Determine the values ofdistances p and q in

order to make the

horizontal component of

the reaction force at Ozero IGG=mk 2

A

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1750

2I mk = Ga p( )= α larr

Gma m p( )minus = minus α rarr

AM 0=sum2

[m( p)]q (mk )x 0α minus =

2

m pq mk 0α minus α =

22 k

pq k qp

= =

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1850

2pq k =

O and A arecenter of

percussions

AA

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1950

Example The cylinder on

the 60˚ oblique plane is

pulled up by a rope with

tension force T at time t=0

as seen in figure

Calculate the necessarytension force T to pull the

cylinder up the oblique

plane so as to make theacceleration of the center

of mass (G) 1 ms2 (parallel to the

oblique plane)

Note Assume that there isno slippage between the

cylinder and the oblique

plane2R 400 mm r=200 mm I=03kg m= m=200 kg

600

R

r

G

T

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2050

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2150

Example

Determine the driving torque T2 to be applied to the crank (2) in

the Scotch-Yoke mechanism shown in figure in order to

maintain the given motion

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2250

Letrsquos draw the free body diagrams of the members of the mechanism

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2350

USE OF GRAPHICAL METHOD

IN DYNAMIC ANALYSIS

Transforming a 3 force+1 moment member into a

3 force member

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2450

=

=

=

=

Determining

the single force

equivalent of a

moment and a

force system

The arrow of theinertia force(ndash)maG must point

the samedirection with the

direction of theinertia torque (-)Iα

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2550

SUPERPOSITION PRINCIPLE

Applicable to linear systems

F(a)= A F(b)=B F(a+b)= A+B

k

b

k

a

k

a+b

k

A B A+B

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2650

DYNAMIC ANALYSIS BY USING

GRAPHICAL METHOD

(1) Perform position analysis to obtain distances and angles

(2) Perform kinematic analysis to obtain accelerations of

centroids and angular acclerations

(3) Determine dynamic forces(-maG) and dynamic moments

(-Iα) acting on the members

(4) For i th member assume mine0 and Iine0 but mass and

mass moment of inertia (mmoi) of all other members are

zero Do it for all members For each case draw FBD of

the members of the mechanism

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2750

DYNAMIC ANALYSIS BY USING

GRAPHICAL METHOD

(5) Assume all masses and mmoirsquos are zero but F ne 0For this case draw the FBD of all mechanism

members

(6) Calculate T2 in all of the cases in steps 4 and 5(7) Superpose all T2 rsquos calculated in step 6 so as to

obtain total torque T2

2 2 I 2 II 2 III 2 IVT T T T T= + + +

E l

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2850

Example

E l

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2950

Example

I

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3050

(-)m2a

G2

T2I

2

I

I2ne0 m2ne0 F=0

Ii=0 mi=0 i=34

II

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3150

II

I3ne0 m3ne0 F=0

mi=0 Ii= i=24

III

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3250

T2III 4 (-)m4aG4

III

I4ne0 m4ne0 F=0

Ii=0 mi=0 i=23

IV

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3350

T2IV

F4

IV

Fne0

Ii=0 mi=0 i=234

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3450

2 2 I 2 II 2 III 2 IVT T T T T= + + +

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3550

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150983145983150 983156983144983141 983142983145983143983157983154983141983086 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983154983141 983155983144983151983159983150 983137983155 983151983142983155983141983156983156983141983140 983155983151 983137983155 983156983151 983143983141983150983141983154983137983156983141 983156983144983141

983140983161983150983137983149983145983139 983156983151983154983153983157983141 983151983142 983080983085983081983113α

983086 983108983154983137983159 983156983144983141 983142983154983141983141 983138983151983140983161 983140983145983137983143983154983137983149983155 983151983142 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141983149983141983139983144983137983150983145983155983149 983138983161 983137983152983152983148983161983145983150983143 983155983157983152983141983154983152983151983155983145983156983145983151983150 983152983154983145983150983139983145983152983148983141983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4050

983109 983148 983108 983156 983145 983156983144 983140 983145 983145 983143 983156 983124 983145 983140 983142 983156983144 983144 983145

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4150

983109983160983137983149983152983148983141 983108983141983156983141983154983149983145983150983141 983156983144983141 983140983154983145983158983145983150983143 983156983151983154983153983157983141 983124983090 983154983141983153983157983145983154983141983140 983142983151983154 983156983144983141 983149983141983139983144983137983150983145983155983149

983155983144983151983159983150 983145983150 983142983145983143983157983154983141 983145983150 983151983154983140983141983154 983156983151 983149983137983145983150983156983137983145983150 983156983144983141 983143983145983158983141983150 983149983151983156983145983151983150983086 983117983141983149983138983141983154 983090 983145983155

983138983137983148983137983150983139983141983140983086

2 3

2 4

23

3

O A 100 mm m 068 kg

O AB 90 m 10 kg

AB 400 mm I 00285 kgm

AG 100 mm

= =

= =

= =

=

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4250

2 2 2G3

G3

2B 1

3 G3

4 B

a 23927 14628 2804m s

14628tan 31

23927

a 2804 (211)

ˆa 2355u m s

m a (154)(2804) 4318 N

m a (132)(2355) 3109 N

= + =

α = α =

= micro

= minus

= =

= =

3 3

3

I (0012)(7670) 92 Nm

92

d 0021m4318

α = =

= =

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4350

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4450

983109983160983137983149983152983148983141

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4550

983109983160983137983149983152983148983141

983108983141983156983141983154983149983145983150983141 983156983144983141

983140983154983145983158983145983150983143 983156983151983154983153983157983141983124983090 983154983141983153983157983145983154983141983140 983142983151983154

983156983144983141 983152983157983149983152

983149983141983139983144983137983150983145983155983149983155983144983151983159983150 983145983150983142983145983143983157983154983141 983145983150 983151983154983140983141983154983156983151 983149983137983145983150983156983137983145983150

983156983144983141 983143983145983158983141983150983149983151983156983145983151983150983086983117983141983149983138983141983154 983090 983145983155983138983137983148983137983150983139983141983140983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 5050

Page 8: Theory of Machines Dynamic Analysis

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 850

DrsquoALEMBERTrsquoS PRINCIPLE

=

+ = 0

Newtonrsquos 2nd law

DrsquoAlembertrsquosprinciple

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 950

ANGULAR MOMENTUM

MOMENT OF MOMENTUM

O i i ii (m )

= times

sumH r v

O

i i i i i ii i

d d

(m ) (m )dt dt= times + times

sum sum

Hr V r V

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1050

ANGULAR MOMENTUM

MOMENT OF MOMENTUM

extO i i

d

dt F= times

sumH

r

O i i i i i i

i i

d d(m ) (m )dt dt

= times + timessum sum

H

r V r V0

O i i i

i

d(m )

dt= times

sumH

r a

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1150

O

ANGULAR MOMENTUM

MOMENT OF MOMENTUM

extOi i

d

dt

F= timessumH

r

O 0

d

dt=

sumH

M

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1250

DYNAMIC EQUILIBRIUM OF

RIGID BODY

G i i G i i

2i i i

( ) [ ( x )m ]

m

= times + times

minus times

sum sum sumsum

iM r m a r α r

r ω r

2i G i i= + times minus timesa a α r ω r

Letrsquos assume point O is

coincident with GO

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1350

DYNAMIC EQUILIBRIUM OF

RIGID BODY

2G i i G i i i i i( ) [ ( x )m ] m= times + times minus timessum sum sum sumi

M r m a r α r r ω r

00

2

G i i

( m )=

sum sumM r α

G I=sum M α

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1450

DYNAMIC EQUILIBRIUM OF

RIGID BODY

G Gext ( m) M= =

sum sumF a a

G I=

sumM α

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1550

DYNAMIC EQUILIBRIUM OF

RIGID BODY

=

+ =0

Newtonrsquos

2nd law

DrsquoAlembertrsquos

principle

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1650

CENTER OF PERCUSSION

Example At t=0 force P is

acted upon the beamsuspended as seen in

figure

Determine the values ofdistances p and q in

order to make the

horizontal component of

the reaction force at Ozero IGG=mk 2

A

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1750

2I mk = Ga p( )= α larr

Gma m p( )minus = minus α rarr

AM 0=sum2

[m( p)]q (mk )x 0α minus =

2

m pq mk 0α minus α =

22 k

pq k qp

= =

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1850

2pq k =

O and A arecenter of

percussions

AA

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1950

Example The cylinder on

the 60˚ oblique plane is

pulled up by a rope with

tension force T at time t=0

as seen in figure

Calculate the necessarytension force T to pull the

cylinder up the oblique

plane so as to make theacceleration of the center

of mass (G) 1 ms2 (parallel to the

oblique plane)

Note Assume that there isno slippage between the

cylinder and the oblique

plane2R 400 mm r=200 mm I=03kg m= m=200 kg

600

R

r

G

T

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2050

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2150

Example

Determine the driving torque T2 to be applied to the crank (2) in

the Scotch-Yoke mechanism shown in figure in order to

maintain the given motion

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2250

Letrsquos draw the free body diagrams of the members of the mechanism

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2350

USE OF GRAPHICAL METHOD

IN DYNAMIC ANALYSIS

Transforming a 3 force+1 moment member into a

3 force member

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2450

=

=

=

=

Determining

the single force

equivalent of a

moment and a

force system

The arrow of theinertia force(ndash)maG must point

the samedirection with the

direction of theinertia torque (-)Iα

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2550

SUPERPOSITION PRINCIPLE

Applicable to linear systems

F(a)= A F(b)=B F(a+b)= A+B

k

b

k

a

k

a+b

k

A B A+B

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2650

DYNAMIC ANALYSIS BY USING

GRAPHICAL METHOD

(1) Perform position analysis to obtain distances and angles

(2) Perform kinematic analysis to obtain accelerations of

centroids and angular acclerations

(3) Determine dynamic forces(-maG) and dynamic moments

(-Iα) acting on the members

(4) For i th member assume mine0 and Iine0 but mass and

mass moment of inertia (mmoi) of all other members are

zero Do it for all members For each case draw FBD of

the members of the mechanism

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2750

DYNAMIC ANALYSIS BY USING

GRAPHICAL METHOD

(5) Assume all masses and mmoirsquos are zero but F ne 0For this case draw the FBD of all mechanism

members

(6) Calculate T2 in all of the cases in steps 4 and 5(7) Superpose all T2 rsquos calculated in step 6 so as to

obtain total torque T2

2 2 I 2 II 2 III 2 IVT T T T T= + + +

E l

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2850

Example

E l

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2950

Example

I

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3050

(-)m2a

G2

T2I

2

I

I2ne0 m2ne0 F=0

Ii=0 mi=0 i=34

II

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3150

II

I3ne0 m3ne0 F=0

mi=0 Ii= i=24

III

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3250

T2III 4 (-)m4aG4

III

I4ne0 m4ne0 F=0

Ii=0 mi=0 i=23

IV

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3350

T2IV

F4

IV

Fne0

Ii=0 mi=0 i=234

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3450

2 2 I 2 II 2 III 2 IVT T T T T= + + +

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3550

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150983145983150 983156983144983141 983142983145983143983157983154983141983086 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983154983141 983155983144983151983159983150 983137983155 983151983142983155983141983156983156983141983140 983155983151 983137983155 983156983151 983143983141983150983141983154983137983156983141 983156983144983141

983140983161983150983137983149983145983139 983156983151983154983153983157983141 983151983142 983080983085983081983113α

983086 983108983154983137983159 983156983144983141 983142983154983141983141 983138983151983140983161 983140983145983137983143983154983137983149983155 983151983142 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141983149983141983139983144983137983150983145983155983149 983138983161 983137983152983152983148983161983145983150983143 983155983157983152983141983154983152983151983155983145983156983145983151983150 983152983154983145983150983139983145983152983148983141983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4050

983109 983148 983108 983156 983145 983156983144 983140 983145 983145 983143 983156 983124 983145 983140 983142 983156983144 983144 983145

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4150

983109983160983137983149983152983148983141 983108983141983156983141983154983149983145983150983141 983156983144983141 983140983154983145983158983145983150983143 983156983151983154983153983157983141 983124983090 983154983141983153983157983145983154983141983140 983142983151983154 983156983144983141 983149983141983139983144983137983150983145983155983149

983155983144983151983159983150 983145983150 983142983145983143983157983154983141 983145983150 983151983154983140983141983154 983156983151 983149983137983145983150983156983137983145983150 983156983144983141 983143983145983158983141983150 983149983151983156983145983151983150983086 983117983141983149983138983141983154 983090 983145983155

983138983137983148983137983150983139983141983140983086

2 3

2 4

23

3

O A 100 mm m 068 kg

O AB 90 m 10 kg

AB 400 mm I 00285 kgm

AG 100 mm

= =

= =

= =

=

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4250

2 2 2G3

G3

2B 1

3 G3

4 B

a 23927 14628 2804m s

14628tan 31

23927

a 2804 (211)

ˆa 2355u m s

m a (154)(2804) 4318 N

m a (132)(2355) 3109 N

= + =

α = α =

= micro

= minus

= =

= =

3 3

3

I (0012)(7670) 92 Nm

92

d 0021m4318

α = =

= =

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4350

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4450

983109983160983137983149983152983148983141

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4550

983109983160983137983149983152983148983141

983108983141983156983141983154983149983145983150983141 983156983144983141

983140983154983145983158983145983150983143 983156983151983154983153983157983141983124983090 983154983141983153983157983145983154983141983140 983142983151983154

983156983144983141 983152983157983149983152

983149983141983139983144983137983150983145983155983149983155983144983151983159983150 983145983150983142983145983143983157983154983141 983145983150 983151983154983140983141983154983156983151 983149983137983145983150983156983137983145983150

983156983144983141 983143983145983158983141983150983149983151983156983145983151983150983086983117983141983149983138983141983154 983090 983145983155983138983137983148983137983150983139983141983140983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 5050

Page 9: Theory of Machines Dynamic Analysis

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 950

ANGULAR MOMENTUM

MOMENT OF MOMENTUM

O i i ii (m )

= times

sumH r v

O

i i i i i ii i

d d

(m ) (m )dt dt= times + times

sum sum

Hr V r V

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1050

ANGULAR MOMENTUM

MOMENT OF MOMENTUM

extO i i

d

dt F= times

sumH

r

O i i i i i i

i i

d d(m ) (m )dt dt

= times + timessum sum

H

r V r V0

O i i i

i

d(m )

dt= times

sumH

r a

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1150

O

ANGULAR MOMENTUM

MOMENT OF MOMENTUM

extOi i

d

dt

F= timessumH

r

O 0

d

dt=

sumH

M

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1250

DYNAMIC EQUILIBRIUM OF

RIGID BODY

G i i G i i

2i i i

( ) [ ( x )m ]

m

= times + times

minus times

sum sum sumsum

iM r m a r α r

r ω r

2i G i i= + times minus timesa a α r ω r

Letrsquos assume point O is

coincident with GO

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1350

DYNAMIC EQUILIBRIUM OF

RIGID BODY

2G i i G i i i i i( ) [ ( x )m ] m= times + times minus timessum sum sum sumi

M r m a r α r r ω r

00

2

G i i

( m )=

sum sumM r α

G I=sum M α

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1450

DYNAMIC EQUILIBRIUM OF

RIGID BODY

G Gext ( m) M= =

sum sumF a a

G I=

sumM α

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1550

DYNAMIC EQUILIBRIUM OF

RIGID BODY

=

+ =0

Newtonrsquos

2nd law

DrsquoAlembertrsquos

principle

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1650

CENTER OF PERCUSSION

Example At t=0 force P is

acted upon the beamsuspended as seen in

figure

Determine the values ofdistances p and q in

order to make the

horizontal component of

the reaction force at Ozero IGG=mk 2

A

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1750

2I mk = Ga p( )= α larr

Gma m p( )minus = minus α rarr

AM 0=sum2

[m( p)]q (mk )x 0α minus =

2

m pq mk 0α minus α =

22 k

pq k qp

= =

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1850

2pq k =

O and A arecenter of

percussions

AA

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1950

Example The cylinder on

the 60˚ oblique plane is

pulled up by a rope with

tension force T at time t=0

as seen in figure

Calculate the necessarytension force T to pull the

cylinder up the oblique

plane so as to make theacceleration of the center

of mass (G) 1 ms2 (parallel to the

oblique plane)

Note Assume that there isno slippage between the

cylinder and the oblique

plane2R 400 mm r=200 mm I=03kg m= m=200 kg

600

R

r

G

T

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2050

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2150

Example

Determine the driving torque T2 to be applied to the crank (2) in

the Scotch-Yoke mechanism shown in figure in order to

maintain the given motion

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2250

Letrsquos draw the free body diagrams of the members of the mechanism

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2350

USE OF GRAPHICAL METHOD

IN DYNAMIC ANALYSIS

Transforming a 3 force+1 moment member into a

3 force member

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2450

=

=

=

=

Determining

the single force

equivalent of a

moment and a

force system

The arrow of theinertia force(ndash)maG must point

the samedirection with the

direction of theinertia torque (-)Iα

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2550

SUPERPOSITION PRINCIPLE

Applicable to linear systems

F(a)= A F(b)=B F(a+b)= A+B

k

b

k

a

k

a+b

k

A B A+B

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2650

DYNAMIC ANALYSIS BY USING

GRAPHICAL METHOD

(1) Perform position analysis to obtain distances and angles

(2) Perform kinematic analysis to obtain accelerations of

centroids and angular acclerations

(3) Determine dynamic forces(-maG) and dynamic moments

(-Iα) acting on the members

(4) For i th member assume mine0 and Iine0 but mass and

mass moment of inertia (mmoi) of all other members are

zero Do it for all members For each case draw FBD of

the members of the mechanism

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2750

DYNAMIC ANALYSIS BY USING

GRAPHICAL METHOD

(5) Assume all masses and mmoirsquos are zero but F ne 0For this case draw the FBD of all mechanism

members

(6) Calculate T2 in all of the cases in steps 4 and 5(7) Superpose all T2 rsquos calculated in step 6 so as to

obtain total torque T2

2 2 I 2 II 2 III 2 IVT T T T T= + + +

E l

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2850

Example

E l

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2950

Example

I

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3050

(-)m2a

G2

T2I

2

I

I2ne0 m2ne0 F=0

Ii=0 mi=0 i=34

II

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3150

II

I3ne0 m3ne0 F=0

mi=0 Ii= i=24

III

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3250

T2III 4 (-)m4aG4

III

I4ne0 m4ne0 F=0

Ii=0 mi=0 i=23

IV

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3350

T2IV

F4

IV

Fne0

Ii=0 mi=0 i=234

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3450

2 2 I 2 II 2 III 2 IVT T T T T= + + +

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3550

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150983145983150 983156983144983141 983142983145983143983157983154983141983086 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983154983141 983155983144983151983159983150 983137983155 983151983142983155983141983156983156983141983140 983155983151 983137983155 983156983151 983143983141983150983141983154983137983156983141 983156983144983141

983140983161983150983137983149983145983139 983156983151983154983153983157983141 983151983142 983080983085983081983113α

983086 983108983154983137983159 983156983144983141 983142983154983141983141 983138983151983140983161 983140983145983137983143983154983137983149983155 983151983142 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141983149983141983139983144983137983150983145983155983149 983138983161 983137983152983152983148983161983145983150983143 983155983157983152983141983154983152983151983155983145983156983145983151983150 983152983154983145983150983139983145983152983148983141983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4050

983109 983148 983108 983156 983145 983156983144 983140 983145 983145 983143 983156 983124 983145 983140 983142 983156983144 983144 983145

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4150

983109983160983137983149983152983148983141 983108983141983156983141983154983149983145983150983141 983156983144983141 983140983154983145983158983145983150983143 983156983151983154983153983157983141 983124983090 983154983141983153983157983145983154983141983140 983142983151983154 983156983144983141 983149983141983139983144983137983150983145983155983149

983155983144983151983159983150 983145983150 983142983145983143983157983154983141 983145983150 983151983154983140983141983154 983156983151 983149983137983145983150983156983137983145983150 983156983144983141 983143983145983158983141983150 983149983151983156983145983151983150983086 983117983141983149983138983141983154 983090 983145983155

983138983137983148983137983150983139983141983140983086

2 3

2 4

23

3

O A 100 mm m 068 kg

O AB 90 m 10 kg

AB 400 mm I 00285 kgm

AG 100 mm

= =

= =

= =

=

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4250

2 2 2G3

G3

2B 1

3 G3

4 B

a 23927 14628 2804m s

14628tan 31

23927

a 2804 (211)

ˆa 2355u m s

m a (154)(2804) 4318 N

m a (132)(2355) 3109 N

= + =

α = α =

= micro

= minus

= =

= =

3 3

3

I (0012)(7670) 92 Nm

92

d 0021m4318

α = =

= =

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4350

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4450

983109983160983137983149983152983148983141

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4550

983109983160983137983149983152983148983141

983108983141983156983141983154983149983145983150983141 983156983144983141

983140983154983145983158983145983150983143 983156983151983154983153983157983141983124983090 983154983141983153983157983145983154983141983140 983142983151983154

983156983144983141 983152983157983149983152

983149983141983139983144983137983150983145983155983149983155983144983151983159983150 983145983150983142983145983143983157983154983141 983145983150 983151983154983140983141983154983156983151 983149983137983145983150983156983137983145983150

983156983144983141 983143983145983158983141983150983149983151983156983145983151983150983086983117983141983149983138983141983154 983090 983145983155983138983137983148983137983150983139983141983140983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 5050

Page 10: Theory of Machines Dynamic Analysis

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1050

ANGULAR MOMENTUM

MOMENT OF MOMENTUM

extO i i

d

dt F= times

sumH

r

O i i i i i i

i i

d d(m ) (m )dt dt

= times + timessum sum

H

r V r V0

O i i i

i

d(m )

dt= times

sumH

r a

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1150

O

ANGULAR MOMENTUM

MOMENT OF MOMENTUM

extOi i

d

dt

F= timessumH

r

O 0

d

dt=

sumH

M

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1250

DYNAMIC EQUILIBRIUM OF

RIGID BODY

G i i G i i

2i i i

( ) [ ( x )m ]

m

= times + times

minus times

sum sum sumsum

iM r m a r α r

r ω r

2i G i i= + times minus timesa a α r ω r

Letrsquos assume point O is

coincident with GO

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1350

DYNAMIC EQUILIBRIUM OF

RIGID BODY

2G i i G i i i i i( ) [ ( x )m ] m= times + times minus timessum sum sum sumi

M r m a r α r r ω r

00

2

G i i

( m )=

sum sumM r α

G I=sum M α

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1450

DYNAMIC EQUILIBRIUM OF

RIGID BODY

G Gext ( m) M= =

sum sumF a a

G I=

sumM α

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1550

DYNAMIC EQUILIBRIUM OF

RIGID BODY

=

+ =0

Newtonrsquos

2nd law

DrsquoAlembertrsquos

principle

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1650

CENTER OF PERCUSSION

Example At t=0 force P is

acted upon the beamsuspended as seen in

figure

Determine the values ofdistances p and q in

order to make the

horizontal component of

the reaction force at Ozero IGG=mk 2

A

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1750

2I mk = Ga p( )= α larr

Gma m p( )minus = minus α rarr

AM 0=sum2

[m( p)]q (mk )x 0α minus =

2

m pq mk 0α minus α =

22 k

pq k qp

= =

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1850

2pq k =

O and A arecenter of

percussions

AA

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1950

Example The cylinder on

the 60˚ oblique plane is

pulled up by a rope with

tension force T at time t=0

as seen in figure

Calculate the necessarytension force T to pull the

cylinder up the oblique

plane so as to make theacceleration of the center

of mass (G) 1 ms2 (parallel to the

oblique plane)

Note Assume that there isno slippage between the

cylinder and the oblique

plane2R 400 mm r=200 mm I=03kg m= m=200 kg

600

R

r

G

T

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2050

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2150

Example

Determine the driving torque T2 to be applied to the crank (2) in

the Scotch-Yoke mechanism shown in figure in order to

maintain the given motion

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2250

Letrsquos draw the free body diagrams of the members of the mechanism

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2350

USE OF GRAPHICAL METHOD

IN DYNAMIC ANALYSIS

Transforming a 3 force+1 moment member into a

3 force member

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2450

=

=

=

=

Determining

the single force

equivalent of a

moment and a

force system

The arrow of theinertia force(ndash)maG must point

the samedirection with the

direction of theinertia torque (-)Iα

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2550

SUPERPOSITION PRINCIPLE

Applicable to linear systems

F(a)= A F(b)=B F(a+b)= A+B

k

b

k

a

k

a+b

k

A B A+B

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2650

DYNAMIC ANALYSIS BY USING

GRAPHICAL METHOD

(1) Perform position analysis to obtain distances and angles

(2) Perform kinematic analysis to obtain accelerations of

centroids and angular acclerations

(3) Determine dynamic forces(-maG) and dynamic moments

(-Iα) acting on the members

(4) For i th member assume mine0 and Iine0 but mass and

mass moment of inertia (mmoi) of all other members are

zero Do it for all members For each case draw FBD of

the members of the mechanism

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2750

DYNAMIC ANALYSIS BY USING

GRAPHICAL METHOD

(5) Assume all masses and mmoirsquos are zero but F ne 0For this case draw the FBD of all mechanism

members

(6) Calculate T2 in all of the cases in steps 4 and 5(7) Superpose all T2 rsquos calculated in step 6 so as to

obtain total torque T2

2 2 I 2 II 2 III 2 IVT T T T T= + + +

E l

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2850

Example

E l

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2950

Example

I

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3050

(-)m2a

G2

T2I

2

I

I2ne0 m2ne0 F=0

Ii=0 mi=0 i=34

II

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3150

II

I3ne0 m3ne0 F=0

mi=0 Ii= i=24

III

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3250

T2III 4 (-)m4aG4

III

I4ne0 m4ne0 F=0

Ii=0 mi=0 i=23

IV

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3350

T2IV

F4

IV

Fne0

Ii=0 mi=0 i=234

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3450

2 2 I 2 II 2 III 2 IVT T T T T= + + +

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3550

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150983145983150 983156983144983141 983142983145983143983157983154983141983086 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983154983141 983155983144983151983159983150 983137983155 983151983142983155983141983156983156983141983140 983155983151 983137983155 983156983151 983143983141983150983141983154983137983156983141 983156983144983141

983140983161983150983137983149983145983139 983156983151983154983153983157983141 983151983142 983080983085983081983113α

983086 983108983154983137983159 983156983144983141 983142983154983141983141 983138983151983140983161 983140983145983137983143983154983137983149983155 983151983142 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141983149983141983139983144983137983150983145983155983149 983138983161 983137983152983152983148983161983145983150983143 983155983157983152983141983154983152983151983155983145983156983145983151983150 983152983154983145983150983139983145983152983148983141983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4050

983109 983148 983108 983156 983145 983156983144 983140 983145 983145 983143 983156 983124 983145 983140 983142 983156983144 983144 983145

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4150

983109983160983137983149983152983148983141 983108983141983156983141983154983149983145983150983141 983156983144983141 983140983154983145983158983145983150983143 983156983151983154983153983157983141 983124983090 983154983141983153983157983145983154983141983140 983142983151983154 983156983144983141 983149983141983139983144983137983150983145983155983149

983155983144983151983159983150 983145983150 983142983145983143983157983154983141 983145983150 983151983154983140983141983154 983156983151 983149983137983145983150983156983137983145983150 983156983144983141 983143983145983158983141983150 983149983151983156983145983151983150983086 983117983141983149983138983141983154 983090 983145983155

983138983137983148983137983150983139983141983140983086

2 3

2 4

23

3

O A 100 mm m 068 kg

O AB 90 m 10 kg

AB 400 mm I 00285 kgm

AG 100 mm

= =

= =

= =

=

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4250

2 2 2G3

G3

2B 1

3 G3

4 B

a 23927 14628 2804m s

14628tan 31

23927

a 2804 (211)

ˆa 2355u m s

m a (154)(2804) 4318 N

m a (132)(2355) 3109 N

= + =

α = α =

= micro

= minus

= =

= =

3 3

3

I (0012)(7670) 92 Nm

92

d 0021m4318

α = =

= =

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4350

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4450

983109983160983137983149983152983148983141

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4550

983109983160983137983149983152983148983141

983108983141983156983141983154983149983145983150983141 983156983144983141

983140983154983145983158983145983150983143 983156983151983154983153983157983141983124983090 983154983141983153983157983145983154983141983140 983142983151983154

983156983144983141 983152983157983149983152

983149983141983139983144983137983150983145983155983149983155983144983151983159983150 983145983150983142983145983143983157983154983141 983145983150 983151983154983140983141983154983156983151 983149983137983145983150983156983137983145983150

983156983144983141 983143983145983158983141983150983149983151983156983145983151983150983086983117983141983149983138983141983154 983090 983145983155983138983137983148983137983150983139983141983140983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 5050

Page 11: Theory of Machines Dynamic Analysis

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1150

O

ANGULAR MOMENTUM

MOMENT OF MOMENTUM

extOi i

d

dt

F= timessumH

r

O 0

d

dt=

sumH

M

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1250

DYNAMIC EQUILIBRIUM OF

RIGID BODY

G i i G i i

2i i i

( ) [ ( x )m ]

m

= times + times

minus times

sum sum sumsum

iM r m a r α r

r ω r

2i G i i= + times minus timesa a α r ω r

Letrsquos assume point O is

coincident with GO

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1350

DYNAMIC EQUILIBRIUM OF

RIGID BODY

2G i i G i i i i i( ) [ ( x )m ] m= times + times minus timessum sum sum sumi

M r m a r α r r ω r

00

2

G i i

( m )=

sum sumM r α

G I=sum M α

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1450

DYNAMIC EQUILIBRIUM OF

RIGID BODY

G Gext ( m) M= =

sum sumF a a

G I=

sumM α

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1550

DYNAMIC EQUILIBRIUM OF

RIGID BODY

=

+ =0

Newtonrsquos

2nd law

DrsquoAlembertrsquos

principle

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1650

CENTER OF PERCUSSION

Example At t=0 force P is

acted upon the beamsuspended as seen in

figure

Determine the values ofdistances p and q in

order to make the

horizontal component of

the reaction force at Ozero IGG=mk 2

A

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1750

2I mk = Ga p( )= α larr

Gma m p( )minus = minus α rarr

AM 0=sum2

[m( p)]q (mk )x 0α minus =

2

m pq mk 0α minus α =

22 k

pq k qp

= =

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1850

2pq k =

O and A arecenter of

percussions

AA

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1950

Example The cylinder on

the 60˚ oblique plane is

pulled up by a rope with

tension force T at time t=0

as seen in figure

Calculate the necessarytension force T to pull the

cylinder up the oblique

plane so as to make theacceleration of the center

of mass (G) 1 ms2 (parallel to the

oblique plane)

Note Assume that there isno slippage between the

cylinder and the oblique

plane2R 400 mm r=200 mm I=03kg m= m=200 kg

600

R

r

G

T

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2050

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2150

Example

Determine the driving torque T2 to be applied to the crank (2) in

the Scotch-Yoke mechanism shown in figure in order to

maintain the given motion

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2250

Letrsquos draw the free body diagrams of the members of the mechanism

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2350

USE OF GRAPHICAL METHOD

IN DYNAMIC ANALYSIS

Transforming a 3 force+1 moment member into a

3 force member

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2450

=

=

=

=

Determining

the single force

equivalent of a

moment and a

force system

The arrow of theinertia force(ndash)maG must point

the samedirection with the

direction of theinertia torque (-)Iα

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2550

SUPERPOSITION PRINCIPLE

Applicable to linear systems

F(a)= A F(b)=B F(a+b)= A+B

k

b

k

a

k

a+b

k

A B A+B

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2650

DYNAMIC ANALYSIS BY USING

GRAPHICAL METHOD

(1) Perform position analysis to obtain distances and angles

(2) Perform kinematic analysis to obtain accelerations of

centroids and angular acclerations

(3) Determine dynamic forces(-maG) and dynamic moments

(-Iα) acting on the members

(4) For i th member assume mine0 and Iine0 but mass and

mass moment of inertia (mmoi) of all other members are

zero Do it for all members For each case draw FBD of

the members of the mechanism

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2750

DYNAMIC ANALYSIS BY USING

GRAPHICAL METHOD

(5) Assume all masses and mmoirsquos are zero but F ne 0For this case draw the FBD of all mechanism

members

(6) Calculate T2 in all of the cases in steps 4 and 5(7) Superpose all T2 rsquos calculated in step 6 so as to

obtain total torque T2

2 2 I 2 II 2 III 2 IVT T T T T= + + +

E l

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2850

Example

E l

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2950

Example

I

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3050

(-)m2a

G2

T2I

2

I

I2ne0 m2ne0 F=0

Ii=0 mi=0 i=34

II

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3150

II

I3ne0 m3ne0 F=0

mi=0 Ii= i=24

III

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3250

T2III 4 (-)m4aG4

III

I4ne0 m4ne0 F=0

Ii=0 mi=0 i=23

IV

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3350

T2IV

F4

IV

Fne0

Ii=0 mi=0 i=234

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3450

2 2 I 2 II 2 III 2 IVT T T T T= + + +

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3550

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150983145983150 983156983144983141 983142983145983143983157983154983141983086 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983154983141 983155983144983151983159983150 983137983155 983151983142983155983141983156983156983141983140 983155983151 983137983155 983156983151 983143983141983150983141983154983137983156983141 983156983144983141

983140983161983150983137983149983145983139 983156983151983154983153983157983141 983151983142 983080983085983081983113α

983086 983108983154983137983159 983156983144983141 983142983154983141983141 983138983151983140983161 983140983145983137983143983154983137983149983155 983151983142 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141983149983141983139983144983137983150983145983155983149 983138983161 983137983152983152983148983161983145983150983143 983155983157983152983141983154983152983151983155983145983156983145983151983150 983152983154983145983150983139983145983152983148983141983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4050

983109 983148 983108 983156 983145 983156983144 983140 983145 983145 983143 983156 983124 983145 983140 983142 983156983144 983144 983145

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4150

983109983160983137983149983152983148983141 983108983141983156983141983154983149983145983150983141 983156983144983141 983140983154983145983158983145983150983143 983156983151983154983153983157983141 983124983090 983154983141983153983157983145983154983141983140 983142983151983154 983156983144983141 983149983141983139983144983137983150983145983155983149

983155983144983151983159983150 983145983150 983142983145983143983157983154983141 983145983150 983151983154983140983141983154 983156983151 983149983137983145983150983156983137983145983150 983156983144983141 983143983145983158983141983150 983149983151983156983145983151983150983086 983117983141983149983138983141983154 983090 983145983155

983138983137983148983137983150983139983141983140983086

2 3

2 4

23

3

O A 100 mm m 068 kg

O AB 90 m 10 kg

AB 400 mm I 00285 kgm

AG 100 mm

= =

= =

= =

=

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4250

2 2 2G3

G3

2B 1

3 G3

4 B

a 23927 14628 2804m s

14628tan 31

23927

a 2804 (211)

ˆa 2355u m s

m a (154)(2804) 4318 N

m a (132)(2355) 3109 N

= + =

α = α =

= micro

= minus

= =

= =

3 3

3

I (0012)(7670) 92 Nm

92

d 0021m4318

α = =

= =

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4350

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4450

983109983160983137983149983152983148983141

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4550

983109983160983137983149983152983148983141

983108983141983156983141983154983149983145983150983141 983156983144983141

983140983154983145983158983145983150983143 983156983151983154983153983157983141983124983090 983154983141983153983157983145983154983141983140 983142983151983154

983156983144983141 983152983157983149983152

983149983141983139983144983137983150983145983155983149983155983144983151983159983150 983145983150983142983145983143983157983154983141 983145983150 983151983154983140983141983154983156983151 983149983137983145983150983156983137983145983150

983156983144983141 983143983145983158983141983150983149983151983156983145983151983150983086983117983141983149983138983141983154 983090 983145983155983138983137983148983137983150983139983141983140983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 5050

Page 12: Theory of Machines Dynamic Analysis

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1250

DYNAMIC EQUILIBRIUM OF

RIGID BODY

G i i G i i

2i i i

( ) [ ( x )m ]

m

= times + times

minus times

sum sum sumsum

iM r m a r α r

r ω r

2i G i i= + times minus timesa a α r ω r

Letrsquos assume point O is

coincident with GO

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1350

DYNAMIC EQUILIBRIUM OF

RIGID BODY

2G i i G i i i i i( ) [ ( x )m ] m= times + times minus timessum sum sum sumi

M r m a r α r r ω r

00

2

G i i

( m )=

sum sumM r α

G I=sum M α

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1450

DYNAMIC EQUILIBRIUM OF

RIGID BODY

G Gext ( m) M= =

sum sumF a a

G I=

sumM α

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1550

DYNAMIC EQUILIBRIUM OF

RIGID BODY

=

+ =0

Newtonrsquos

2nd law

DrsquoAlembertrsquos

principle

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1650

CENTER OF PERCUSSION

Example At t=0 force P is

acted upon the beamsuspended as seen in

figure

Determine the values ofdistances p and q in

order to make the

horizontal component of

the reaction force at Ozero IGG=mk 2

A

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1750

2I mk = Ga p( )= α larr

Gma m p( )minus = minus α rarr

AM 0=sum2

[m( p)]q (mk )x 0α minus =

2

m pq mk 0α minus α =

22 k

pq k qp

= =

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1850

2pq k =

O and A arecenter of

percussions

AA

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1950

Example The cylinder on

the 60˚ oblique plane is

pulled up by a rope with

tension force T at time t=0

as seen in figure

Calculate the necessarytension force T to pull the

cylinder up the oblique

plane so as to make theacceleration of the center

of mass (G) 1 ms2 (parallel to the

oblique plane)

Note Assume that there isno slippage between the

cylinder and the oblique

plane2R 400 mm r=200 mm I=03kg m= m=200 kg

600

R

r

G

T

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2050

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2150

Example

Determine the driving torque T2 to be applied to the crank (2) in

the Scotch-Yoke mechanism shown in figure in order to

maintain the given motion

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2250

Letrsquos draw the free body diagrams of the members of the mechanism

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2350

USE OF GRAPHICAL METHOD

IN DYNAMIC ANALYSIS

Transforming a 3 force+1 moment member into a

3 force member

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2450

=

=

=

=

Determining

the single force

equivalent of a

moment and a

force system

The arrow of theinertia force(ndash)maG must point

the samedirection with the

direction of theinertia torque (-)Iα

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2550

SUPERPOSITION PRINCIPLE

Applicable to linear systems

F(a)= A F(b)=B F(a+b)= A+B

k

b

k

a

k

a+b

k

A B A+B

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2650

DYNAMIC ANALYSIS BY USING

GRAPHICAL METHOD

(1) Perform position analysis to obtain distances and angles

(2) Perform kinematic analysis to obtain accelerations of

centroids and angular acclerations

(3) Determine dynamic forces(-maG) and dynamic moments

(-Iα) acting on the members

(4) For i th member assume mine0 and Iine0 but mass and

mass moment of inertia (mmoi) of all other members are

zero Do it for all members For each case draw FBD of

the members of the mechanism

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2750

DYNAMIC ANALYSIS BY USING

GRAPHICAL METHOD

(5) Assume all masses and mmoirsquos are zero but F ne 0For this case draw the FBD of all mechanism

members

(6) Calculate T2 in all of the cases in steps 4 and 5(7) Superpose all T2 rsquos calculated in step 6 so as to

obtain total torque T2

2 2 I 2 II 2 III 2 IVT T T T T= + + +

E l

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2850

Example

E l

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2950

Example

I

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3050

(-)m2a

G2

T2I

2

I

I2ne0 m2ne0 F=0

Ii=0 mi=0 i=34

II

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3150

II

I3ne0 m3ne0 F=0

mi=0 Ii= i=24

III

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3250

T2III 4 (-)m4aG4

III

I4ne0 m4ne0 F=0

Ii=0 mi=0 i=23

IV

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3350

T2IV

F4

IV

Fne0

Ii=0 mi=0 i=234

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3450

2 2 I 2 II 2 III 2 IVT T T T T= + + +

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3550

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150983145983150 983156983144983141 983142983145983143983157983154983141983086 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983154983141 983155983144983151983159983150 983137983155 983151983142983155983141983156983156983141983140 983155983151 983137983155 983156983151 983143983141983150983141983154983137983156983141 983156983144983141

983140983161983150983137983149983145983139 983156983151983154983153983157983141 983151983142 983080983085983081983113α

983086 983108983154983137983159 983156983144983141 983142983154983141983141 983138983151983140983161 983140983145983137983143983154983137983149983155 983151983142 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141983149983141983139983144983137983150983145983155983149 983138983161 983137983152983152983148983161983145983150983143 983155983157983152983141983154983152983151983155983145983156983145983151983150 983152983154983145983150983139983145983152983148983141983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4050

983109 983148 983108 983156 983145 983156983144 983140 983145 983145 983143 983156 983124 983145 983140 983142 983156983144 983144 983145

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4150

983109983160983137983149983152983148983141 983108983141983156983141983154983149983145983150983141 983156983144983141 983140983154983145983158983145983150983143 983156983151983154983153983157983141 983124983090 983154983141983153983157983145983154983141983140 983142983151983154 983156983144983141 983149983141983139983144983137983150983145983155983149

983155983144983151983159983150 983145983150 983142983145983143983157983154983141 983145983150 983151983154983140983141983154 983156983151 983149983137983145983150983156983137983145983150 983156983144983141 983143983145983158983141983150 983149983151983156983145983151983150983086 983117983141983149983138983141983154 983090 983145983155

983138983137983148983137983150983139983141983140983086

2 3

2 4

23

3

O A 100 mm m 068 kg

O AB 90 m 10 kg

AB 400 mm I 00285 kgm

AG 100 mm

= =

= =

= =

=

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4250

2 2 2G3

G3

2B 1

3 G3

4 B

a 23927 14628 2804m s

14628tan 31

23927

a 2804 (211)

ˆa 2355u m s

m a (154)(2804) 4318 N

m a (132)(2355) 3109 N

= + =

α = α =

= micro

= minus

= =

= =

3 3

3

I (0012)(7670) 92 Nm

92

d 0021m4318

α = =

= =

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4350

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4450

983109983160983137983149983152983148983141

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4550

983109983160983137983149983152983148983141

983108983141983156983141983154983149983145983150983141 983156983144983141

983140983154983145983158983145983150983143 983156983151983154983153983157983141983124983090 983154983141983153983157983145983154983141983140 983142983151983154

983156983144983141 983152983157983149983152

983149983141983139983144983137983150983145983155983149983155983144983151983159983150 983145983150983142983145983143983157983154983141 983145983150 983151983154983140983141983154983156983151 983149983137983145983150983156983137983145983150

983156983144983141 983143983145983158983141983150983149983151983156983145983151983150983086983117983141983149983138983141983154 983090 983145983155983138983137983148983137983150983139983141983140983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 5050

Page 13: Theory of Machines Dynamic Analysis

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1350

DYNAMIC EQUILIBRIUM OF

RIGID BODY

2G i i G i i i i i( ) [ ( x )m ] m= times + times minus timessum sum sum sumi

M r m a r α r r ω r

00

2

G i i

( m )=

sum sumM r α

G I=sum M α

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1450

DYNAMIC EQUILIBRIUM OF

RIGID BODY

G Gext ( m) M= =

sum sumF a a

G I=

sumM α

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1550

DYNAMIC EQUILIBRIUM OF

RIGID BODY

=

+ =0

Newtonrsquos

2nd law

DrsquoAlembertrsquos

principle

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1650

CENTER OF PERCUSSION

Example At t=0 force P is

acted upon the beamsuspended as seen in

figure

Determine the values ofdistances p and q in

order to make the

horizontal component of

the reaction force at Ozero IGG=mk 2

A

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1750

2I mk = Ga p( )= α larr

Gma m p( )minus = minus α rarr

AM 0=sum2

[m( p)]q (mk )x 0α minus =

2

m pq mk 0α minus α =

22 k

pq k qp

= =

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1850

2pq k =

O and A arecenter of

percussions

AA

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1950

Example The cylinder on

the 60˚ oblique plane is

pulled up by a rope with

tension force T at time t=0

as seen in figure

Calculate the necessarytension force T to pull the

cylinder up the oblique

plane so as to make theacceleration of the center

of mass (G) 1 ms2 (parallel to the

oblique plane)

Note Assume that there isno slippage between the

cylinder and the oblique

plane2R 400 mm r=200 mm I=03kg m= m=200 kg

600

R

r

G

T

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2050

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2150

Example

Determine the driving torque T2 to be applied to the crank (2) in

the Scotch-Yoke mechanism shown in figure in order to

maintain the given motion

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2250

Letrsquos draw the free body diagrams of the members of the mechanism

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2350

USE OF GRAPHICAL METHOD

IN DYNAMIC ANALYSIS

Transforming a 3 force+1 moment member into a

3 force member

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2450

=

=

=

=

Determining

the single force

equivalent of a

moment and a

force system

The arrow of theinertia force(ndash)maG must point

the samedirection with the

direction of theinertia torque (-)Iα

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2550

SUPERPOSITION PRINCIPLE

Applicable to linear systems

F(a)= A F(b)=B F(a+b)= A+B

k

b

k

a

k

a+b

k

A B A+B

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2650

DYNAMIC ANALYSIS BY USING

GRAPHICAL METHOD

(1) Perform position analysis to obtain distances and angles

(2) Perform kinematic analysis to obtain accelerations of

centroids and angular acclerations

(3) Determine dynamic forces(-maG) and dynamic moments

(-Iα) acting on the members

(4) For i th member assume mine0 and Iine0 but mass and

mass moment of inertia (mmoi) of all other members are

zero Do it for all members For each case draw FBD of

the members of the mechanism

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2750

DYNAMIC ANALYSIS BY USING

GRAPHICAL METHOD

(5) Assume all masses and mmoirsquos are zero but F ne 0For this case draw the FBD of all mechanism

members

(6) Calculate T2 in all of the cases in steps 4 and 5(7) Superpose all T2 rsquos calculated in step 6 so as to

obtain total torque T2

2 2 I 2 II 2 III 2 IVT T T T T= + + +

E l

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2850

Example

E l

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2950

Example

I

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3050

(-)m2a

G2

T2I

2

I

I2ne0 m2ne0 F=0

Ii=0 mi=0 i=34

II

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3150

II

I3ne0 m3ne0 F=0

mi=0 Ii= i=24

III

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3250

T2III 4 (-)m4aG4

III

I4ne0 m4ne0 F=0

Ii=0 mi=0 i=23

IV

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3350

T2IV

F4

IV

Fne0

Ii=0 mi=0 i=234

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3450

2 2 I 2 II 2 III 2 IVT T T T T= + + +

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3550

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150983145983150 983156983144983141 983142983145983143983157983154983141983086 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983154983141 983155983144983151983159983150 983137983155 983151983142983155983141983156983156983141983140 983155983151 983137983155 983156983151 983143983141983150983141983154983137983156983141 983156983144983141

983140983161983150983137983149983145983139 983156983151983154983153983157983141 983151983142 983080983085983081983113α

983086 983108983154983137983159 983156983144983141 983142983154983141983141 983138983151983140983161 983140983145983137983143983154983137983149983155 983151983142 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141983149983141983139983144983137983150983145983155983149 983138983161 983137983152983152983148983161983145983150983143 983155983157983152983141983154983152983151983155983145983156983145983151983150 983152983154983145983150983139983145983152983148983141983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4050

983109 983148 983108 983156 983145 983156983144 983140 983145 983145 983143 983156 983124 983145 983140 983142 983156983144 983144 983145

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4150

983109983160983137983149983152983148983141 983108983141983156983141983154983149983145983150983141 983156983144983141 983140983154983145983158983145983150983143 983156983151983154983153983157983141 983124983090 983154983141983153983157983145983154983141983140 983142983151983154 983156983144983141 983149983141983139983144983137983150983145983155983149

983155983144983151983159983150 983145983150 983142983145983143983157983154983141 983145983150 983151983154983140983141983154 983156983151 983149983137983145983150983156983137983145983150 983156983144983141 983143983145983158983141983150 983149983151983156983145983151983150983086 983117983141983149983138983141983154 983090 983145983155

983138983137983148983137983150983139983141983140983086

2 3

2 4

23

3

O A 100 mm m 068 kg

O AB 90 m 10 kg

AB 400 mm I 00285 kgm

AG 100 mm

= =

= =

= =

=

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4250

2 2 2G3

G3

2B 1

3 G3

4 B

a 23927 14628 2804m s

14628tan 31

23927

a 2804 (211)

ˆa 2355u m s

m a (154)(2804) 4318 N

m a (132)(2355) 3109 N

= + =

α = α =

= micro

= minus

= =

= =

3 3

3

I (0012)(7670) 92 Nm

92

d 0021m4318

α = =

= =

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4350

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4450

983109983160983137983149983152983148983141

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4550

983109983160983137983149983152983148983141

983108983141983156983141983154983149983145983150983141 983156983144983141

983140983154983145983158983145983150983143 983156983151983154983153983157983141983124983090 983154983141983153983157983145983154983141983140 983142983151983154

983156983144983141 983152983157983149983152

983149983141983139983144983137983150983145983155983149983155983144983151983159983150 983145983150983142983145983143983157983154983141 983145983150 983151983154983140983141983154983156983151 983149983137983145983150983156983137983145983150

983156983144983141 983143983145983158983141983150983149983151983156983145983151983150983086983117983141983149983138983141983154 983090 983145983155983138983137983148983137983150983139983141983140983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 5050

Page 14: Theory of Machines Dynamic Analysis

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1450

DYNAMIC EQUILIBRIUM OF

RIGID BODY

G Gext ( m) M= =

sum sumF a a

G I=

sumM α

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1550

DYNAMIC EQUILIBRIUM OF

RIGID BODY

=

+ =0

Newtonrsquos

2nd law

DrsquoAlembertrsquos

principle

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1650

CENTER OF PERCUSSION

Example At t=0 force P is

acted upon the beamsuspended as seen in

figure

Determine the values ofdistances p and q in

order to make the

horizontal component of

the reaction force at Ozero IGG=mk 2

A

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1750

2I mk = Ga p( )= α larr

Gma m p( )minus = minus α rarr

AM 0=sum2

[m( p)]q (mk )x 0α minus =

2

m pq mk 0α minus α =

22 k

pq k qp

= =

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1850

2pq k =

O and A arecenter of

percussions

AA

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1950

Example The cylinder on

the 60˚ oblique plane is

pulled up by a rope with

tension force T at time t=0

as seen in figure

Calculate the necessarytension force T to pull the

cylinder up the oblique

plane so as to make theacceleration of the center

of mass (G) 1 ms2 (parallel to the

oblique plane)

Note Assume that there isno slippage between the

cylinder and the oblique

plane2R 400 mm r=200 mm I=03kg m= m=200 kg

600

R

r

G

T

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2050

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2150

Example

Determine the driving torque T2 to be applied to the crank (2) in

the Scotch-Yoke mechanism shown in figure in order to

maintain the given motion

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2250

Letrsquos draw the free body diagrams of the members of the mechanism

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2350

USE OF GRAPHICAL METHOD

IN DYNAMIC ANALYSIS

Transforming a 3 force+1 moment member into a

3 force member

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2450

=

=

=

=

Determining

the single force

equivalent of a

moment and a

force system

The arrow of theinertia force(ndash)maG must point

the samedirection with the

direction of theinertia torque (-)Iα

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2550

SUPERPOSITION PRINCIPLE

Applicable to linear systems

F(a)= A F(b)=B F(a+b)= A+B

k

b

k

a

k

a+b

k

A B A+B

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2650

DYNAMIC ANALYSIS BY USING

GRAPHICAL METHOD

(1) Perform position analysis to obtain distances and angles

(2) Perform kinematic analysis to obtain accelerations of

centroids and angular acclerations

(3) Determine dynamic forces(-maG) and dynamic moments

(-Iα) acting on the members

(4) For i th member assume mine0 and Iine0 but mass and

mass moment of inertia (mmoi) of all other members are

zero Do it for all members For each case draw FBD of

the members of the mechanism

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2750

DYNAMIC ANALYSIS BY USING

GRAPHICAL METHOD

(5) Assume all masses and mmoirsquos are zero but F ne 0For this case draw the FBD of all mechanism

members

(6) Calculate T2 in all of the cases in steps 4 and 5(7) Superpose all T2 rsquos calculated in step 6 so as to

obtain total torque T2

2 2 I 2 II 2 III 2 IVT T T T T= + + +

E l

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2850

Example

E l

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2950

Example

I

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3050

(-)m2a

G2

T2I

2

I

I2ne0 m2ne0 F=0

Ii=0 mi=0 i=34

II

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3150

II

I3ne0 m3ne0 F=0

mi=0 Ii= i=24

III

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3250

T2III 4 (-)m4aG4

III

I4ne0 m4ne0 F=0

Ii=0 mi=0 i=23

IV

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3350

T2IV

F4

IV

Fne0

Ii=0 mi=0 i=234

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3450

2 2 I 2 II 2 III 2 IVT T T T T= + + +

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3550

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150983145983150 983156983144983141 983142983145983143983157983154983141983086 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983154983141 983155983144983151983159983150 983137983155 983151983142983155983141983156983156983141983140 983155983151 983137983155 983156983151 983143983141983150983141983154983137983156983141 983156983144983141

983140983161983150983137983149983145983139 983156983151983154983153983157983141 983151983142 983080983085983081983113α

983086 983108983154983137983159 983156983144983141 983142983154983141983141 983138983151983140983161 983140983145983137983143983154983137983149983155 983151983142 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141983149983141983139983144983137983150983145983155983149 983138983161 983137983152983152983148983161983145983150983143 983155983157983152983141983154983152983151983155983145983156983145983151983150 983152983154983145983150983139983145983152983148983141983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4050

983109 983148 983108 983156 983145 983156983144 983140 983145 983145 983143 983156 983124 983145 983140 983142 983156983144 983144 983145

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4150

983109983160983137983149983152983148983141 983108983141983156983141983154983149983145983150983141 983156983144983141 983140983154983145983158983145983150983143 983156983151983154983153983157983141 983124983090 983154983141983153983157983145983154983141983140 983142983151983154 983156983144983141 983149983141983139983144983137983150983145983155983149

983155983144983151983159983150 983145983150 983142983145983143983157983154983141 983145983150 983151983154983140983141983154 983156983151 983149983137983145983150983156983137983145983150 983156983144983141 983143983145983158983141983150 983149983151983156983145983151983150983086 983117983141983149983138983141983154 983090 983145983155

983138983137983148983137983150983139983141983140983086

2 3

2 4

23

3

O A 100 mm m 068 kg

O AB 90 m 10 kg

AB 400 mm I 00285 kgm

AG 100 mm

= =

= =

= =

=

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4250

2 2 2G3

G3

2B 1

3 G3

4 B

a 23927 14628 2804m s

14628tan 31

23927

a 2804 (211)

ˆa 2355u m s

m a (154)(2804) 4318 N

m a (132)(2355) 3109 N

= + =

α = α =

= micro

= minus

= =

= =

3 3

3

I (0012)(7670) 92 Nm

92

d 0021m4318

α = =

= =

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4350

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4450

983109983160983137983149983152983148983141

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4550

983109983160983137983149983152983148983141

983108983141983156983141983154983149983145983150983141 983156983144983141

983140983154983145983158983145983150983143 983156983151983154983153983157983141983124983090 983154983141983153983157983145983154983141983140 983142983151983154

983156983144983141 983152983157983149983152

983149983141983139983144983137983150983145983155983149983155983144983151983159983150 983145983150983142983145983143983157983154983141 983145983150 983151983154983140983141983154983156983151 983149983137983145983150983156983137983145983150

983156983144983141 983143983145983158983141983150983149983151983156983145983151983150983086983117983141983149983138983141983154 983090 983145983155983138983137983148983137983150983139983141983140983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 5050

Page 15: Theory of Machines Dynamic Analysis

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1550

DYNAMIC EQUILIBRIUM OF

RIGID BODY

=

+ =0

Newtonrsquos

2nd law

DrsquoAlembertrsquos

principle

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1650

CENTER OF PERCUSSION

Example At t=0 force P is

acted upon the beamsuspended as seen in

figure

Determine the values ofdistances p and q in

order to make the

horizontal component of

the reaction force at Ozero IGG=mk 2

A

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1750

2I mk = Ga p( )= α larr

Gma m p( )minus = minus α rarr

AM 0=sum2

[m( p)]q (mk )x 0α minus =

2

m pq mk 0α minus α =

22 k

pq k qp

= =

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1850

2pq k =

O and A arecenter of

percussions

AA

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1950

Example The cylinder on

the 60˚ oblique plane is

pulled up by a rope with

tension force T at time t=0

as seen in figure

Calculate the necessarytension force T to pull the

cylinder up the oblique

plane so as to make theacceleration of the center

of mass (G) 1 ms2 (parallel to the

oblique plane)

Note Assume that there isno slippage between the

cylinder and the oblique

plane2R 400 mm r=200 mm I=03kg m= m=200 kg

600

R

r

G

T

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2050

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2150

Example

Determine the driving torque T2 to be applied to the crank (2) in

the Scotch-Yoke mechanism shown in figure in order to

maintain the given motion

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2250

Letrsquos draw the free body diagrams of the members of the mechanism

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2350

USE OF GRAPHICAL METHOD

IN DYNAMIC ANALYSIS

Transforming a 3 force+1 moment member into a

3 force member

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2450

=

=

=

=

Determining

the single force

equivalent of a

moment and a

force system

The arrow of theinertia force(ndash)maG must point

the samedirection with the

direction of theinertia torque (-)Iα

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2550

SUPERPOSITION PRINCIPLE

Applicable to linear systems

F(a)= A F(b)=B F(a+b)= A+B

k

b

k

a

k

a+b

k

A B A+B

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2650

DYNAMIC ANALYSIS BY USING

GRAPHICAL METHOD

(1) Perform position analysis to obtain distances and angles

(2) Perform kinematic analysis to obtain accelerations of

centroids and angular acclerations

(3) Determine dynamic forces(-maG) and dynamic moments

(-Iα) acting on the members

(4) For i th member assume mine0 and Iine0 but mass and

mass moment of inertia (mmoi) of all other members are

zero Do it for all members For each case draw FBD of

the members of the mechanism

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2750

DYNAMIC ANALYSIS BY USING

GRAPHICAL METHOD

(5) Assume all masses and mmoirsquos are zero but F ne 0For this case draw the FBD of all mechanism

members

(6) Calculate T2 in all of the cases in steps 4 and 5(7) Superpose all T2 rsquos calculated in step 6 so as to

obtain total torque T2

2 2 I 2 II 2 III 2 IVT T T T T= + + +

E l

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2850

Example

E l

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2950

Example

I

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3050

(-)m2a

G2

T2I

2

I

I2ne0 m2ne0 F=0

Ii=0 mi=0 i=34

II

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3150

II

I3ne0 m3ne0 F=0

mi=0 Ii= i=24

III

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3250

T2III 4 (-)m4aG4

III

I4ne0 m4ne0 F=0

Ii=0 mi=0 i=23

IV

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3350

T2IV

F4

IV

Fne0

Ii=0 mi=0 i=234

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3450

2 2 I 2 II 2 III 2 IVT T T T T= + + +

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3550

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150983145983150 983156983144983141 983142983145983143983157983154983141983086 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983154983141 983155983144983151983159983150 983137983155 983151983142983155983141983156983156983141983140 983155983151 983137983155 983156983151 983143983141983150983141983154983137983156983141 983156983144983141

983140983161983150983137983149983145983139 983156983151983154983153983157983141 983151983142 983080983085983081983113α

983086 983108983154983137983159 983156983144983141 983142983154983141983141 983138983151983140983161 983140983145983137983143983154983137983149983155 983151983142 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141983149983141983139983144983137983150983145983155983149 983138983161 983137983152983152983148983161983145983150983143 983155983157983152983141983154983152983151983155983145983156983145983151983150 983152983154983145983150983139983145983152983148983141983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4050

983109 983148 983108 983156 983145 983156983144 983140 983145 983145 983143 983156 983124 983145 983140 983142 983156983144 983144 983145

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4150

983109983160983137983149983152983148983141 983108983141983156983141983154983149983145983150983141 983156983144983141 983140983154983145983158983145983150983143 983156983151983154983153983157983141 983124983090 983154983141983153983157983145983154983141983140 983142983151983154 983156983144983141 983149983141983139983144983137983150983145983155983149

983155983144983151983159983150 983145983150 983142983145983143983157983154983141 983145983150 983151983154983140983141983154 983156983151 983149983137983145983150983156983137983145983150 983156983144983141 983143983145983158983141983150 983149983151983156983145983151983150983086 983117983141983149983138983141983154 983090 983145983155

983138983137983148983137983150983139983141983140983086

2 3

2 4

23

3

O A 100 mm m 068 kg

O AB 90 m 10 kg

AB 400 mm I 00285 kgm

AG 100 mm

= =

= =

= =

=

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4250

2 2 2G3

G3

2B 1

3 G3

4 B

a 23927 14628 2804m s

14628tan 31

23927

a 2804 (211)

ˆa 2355u m s

m a (154)(2804) 4318 N

m a (132)(2355) 3109 N

= + =

α = α =

= micro

= minus

= =

= =

3 3

3

I (0012)(7670) 92 Nm

92

d 0021m4318

α = =

= =

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4350

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4450

983109983160983137983149983152983148983141

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4550

983109983160983137983149983152983148983141

983108983141983156983141983154983149983145983150983141 983156983144983141

983140983154983145983158983145983150983143 983156983151983154983153983157983141983124983090 983154983141983153983157983145983154983141983140 983142983151983154

983156983144983141 983152983157983149983152

983149983141983139983144983137983150983145983155983149983155983144983151983159983150 983145983150983142983145983143983157983154983141 983145983150 983151983154983140983141983154983156983151 983149983137983145983150983156983137983145983150

983156983144983141 983143983145983158983141983150983149983151983156983145983151983150983086983117983141983149983138983141983154 983090 983145983155983138983137983148983137983150983139983141983140983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 5050

Page 16: Theory of Machines Dynamic Analysis

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1650

CENTER OF PERCUSSION

Example At t=0 force P is

acted upon the beamsuspended as seen in

figure

Determine the values ofdistances p and q in

order to make the

horizontal component of

the reaction force at Ozero IGG=mk 2

A

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1750

2I mk = Ga p( )= α larr

Gma m p( )minus = minus α rarr

AM 0=sum2

[m( p)]q (mk )x 0α minus =

2

m pq mk 0α minus α =

22 k

pq k qp

= =

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1850

2pq k =

O and A arecenter of

percussions

AA

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1950

Example The cylinder on

the 60˚ oblique plane is

pulled up by a rope with

tension force T at time t=0

as seen in figure

Calculate the necessarytension force T to pull the

cylinder up the oblique

plane so as to make theacceleration of the center

of mass (G) 1 ms2 (parallel to the

oblique plane)

Note Assume that there isno slippage between the

cylinder and the oblique

plane2R 400 mm r=200 mm I=03kg m= m=200 kg

600

R

r

G

T

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2050

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2150

Example

Determine the driving torque T2 to be applied to the crank (2) in

the Scotch-Yoke mechanism shown in figure in order to

maintain the given motion

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2250

Letrsquos draw the free body diagrams of the members of the mechanism

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2350

USE OF GRAPHICAL METHOD

IN DYNAMIC ANALYSIS

Transforming a 3 force+1 moment member into a

3 force member

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2450

=

=

=

=

Determining

the single force

equivalent of a

moment and a

force system

The arrow of theinertia force(ndash)maG must point

the samedirection with the

direction of theinertia torque (-)Iα

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2550

SUPERPOSITION PRINCIPLE

Applicable to linear systems

F(a)= A F(b)=B F(a+b)= A+B

k

b

k

a

k

a+b

k

A B A+B

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2650

DYNAMIC ANALYSIS BY USING

GRAPHICAL METHOD

(1) Perform position analysis to obtain distances and angles

(2) Perform kinematic analysis to obtain accelerations of

centroids and angular acclerations

(3) Determine dynamic forces(-maG) and dynamic moments

(-Iα) acting on the members

(4) For i th member assume mine0 and Iine0 but mass and

mass moment of inertia (mmoi) of all other members are

zero Do it for all members For each case draw FBD of

the members of the mechanism

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2750

DYNAMIC ANALYSIS BY USING

GRAPHICAL METHOD

(5) Assume all masses and mmoirsquos are zero but F ne 0For this case draw the FBD of all mechanism

members

(6) Calculate T2 in all of the cases in steps 4 and 5(7) Superpose all T2 rsquos calculated in step 6 so as to

obtain total torque T2

2 2 I 2 II 2 III 2 IVT T T T T= + + +

E l

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2850

Example

E l

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2950

Example

I

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3050

(-)m2a

G2

T2I

2

I

I2ne0 m2ne0 F=0

Ii=0 mi=0 i=34

II

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3150

II

I3ne0 m3ne0 F=0

mi=0 Ii= i=24

III

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3250

T2III 4 (-)m4aG4

III

I4ne0 m4ne0 F=0

Ii=0 mi=0 i=23

IV

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3350

T2IV

F4

IV

Fne0

Ii=0 mi=0 i=234

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3450

2 2 I 2 II 2 III 2 IVT T T T T= + + +

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3550

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150983145983150 983156983144983141 983142983145983143983157983154983141983086 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983154983141 983155983144983151983159983150 983137983155 983151983142983155983141983156983156983141983140 983155983151 983137983155 983156983151 983143983141983150983141983154983137983156983141 983156983144983141

983140983161983150983137983149983145983139 983156983151983154983153983157983141 983151983142 983080983085983081983113α

983086 983108983154983137983159 983156983144983141 983142983154983141983141 983138983151983140983161 983140983145983137983143983154983137983149983155 983151983142 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141983149983141983139983144983137983150983145983155983149 983138983161 983137983152983152983148983161983145983150983143 983155983157983152983141983154983152983151983155983145983156983145983151983150 983152983154983145983150983139983145983152983148983141983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4050

983109 983148 983108 983156 983145 983156983144 983140 983145 983145 983143 983156 983124 983145 983140 983142 983156983144 983144 983145

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4150

983109983160983137983149983152983148983141 983108983141983156983141983154983149983145983150983141 983156983144983141 983140983154983145983158983145983150983143 983156983151983154983153983157983141 983124983090 983154983141983153983157983145983154983141983140 983142983151983154 983156983144983141 983149983141983139983144983137983150983145983155983149

983155983144983151983159983150 983145983150 983142983145983143983157983154983141 983145983150 983151983154983140983141983154 983156983151 983149983137983145983150983156983137983145983150 983156983144983141 983143983145983158983141983150 983149983151983156983145983151983150983086 983117983141983149983138983141983154 983090 983145983155

983138983137983148983137983150983139983141983140983086

2 3

2 4

23

3

O A 100 mm m 068 kg

O AB 90 m 10 kg

AB 400 mm I 00285 kgm

AG 100 mm

= =

= =

= =

=

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4250

2 2 2G3

G3

2B 1

3 G3

4 B

a 23927 14628 2804m s

14628tan 31

23927

a 2804 (211)

ˆa 2355u m s

m a (154)(2804) 4318 N

m a (132)(2355) 3109 N

= + =

α = α =

= micro

= minus

= =

= =

3 3

3

I (0012)(7670) 92 Nm

92

d 0021m4318

α = =

= =

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4350

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4450

983109983160983137983149983152983148983141

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4550

983109983160983137983149983152983148983141

983108983141983156983141983154983149983145983150983141 983156983144983141

983140983154983145983158983145983150983143 983156983151983154983153983157983141983124983090 983154983141983153983157983145983154983141983140 983142983151983154

983156983144983141 983152983157983149983152

983149983141983139983144983137983150983145983155983149983155983144983151983159983150 983145983150983142983145983143983157983154983141 983145983150 983151983154983140983141983154983156983151 983149983137983145983150983156983137983145983150

983156983144983141 983143983145983158983141983150983149983151983156983145983151983150983086983117983141983149983138983141983154 983090 983145983155983138983137983148983137983150983139983141983140983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 5050

Page 17: Theory of Machines Dynamic Analysis

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1750

2I mk = Ga p( )= α larr

Gma m p( )minus = minus α rarr

AM 0=sum2

[m( p)]q (mk )x 0α minus =

2

m pq mk 0α minus α =

22 k

pq k qp

= =

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1850

2pq k =

O and A arecenter of

percussions

AA

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1950

Example The cylinder on

the 60˚ oblique plane is

pulled up by a rope with

tension force T at time t=0

as seen in figure

Calculate the necessarytension force T to pull the

cylinder up the oblique

plane so as to make theacceleration of the center

of mass (G) 1 ms2 (parallel to the

oblique plane)

Note Assume that there isno slippage between the

cylinder and the oblique

plane2R 400 mm r=200 mm I=03kg m= m=200 kg

600

R

r

G

T

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2050

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2150

Example

Determine the driving torque T2 to be applied to the crank (2) in

the Scotch-Yoke mechanism shown in figure in order to

maintain the given motion

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2250

Letrsquos draw the free body diagrams of the members of the mechanism

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2350

USE OF GRAPHICAL METHOD

IN DYNAMIC ANALYSIS

Transforming a 3 force+1 moment member into a

3 force member

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2450

=

=

=

=

Determining

the single force

equivalent of a

moment and a

force system

The arrow of theinertia force(ndash)maG must point

the samedirection with the

direction of theinertia torque (-)Iα

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2550

SUPERPOSITION PRINCIPLE

Applicable to linear systems

F(a)= A F(b)=B F(a+b)= A+B

k

b

k

a

k

a+b

k

A B A+B

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2650

DYNAMIC ANALYSIS BY USING

GRAPHICAL METHOD

(1) Perform position analysis to obtain distances and angles

(2) Perform kinematic analysis to obtain accelerations of

centroids and angular acclerations

(3) Determine dynamic forces(-maG) and dynamic moments

(-Iα) acting on the members

(4) For i th member assume mine0 and Iine0 but mass and

mass moment of inertia (mmoi) of all other members are

zero Do it for all members For each case draw FBD of

the members of the mechanism

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2750

DYNAMIC ANALYSIS BY USING

GRAPHICAL METHOD

(5) Assume all masses and mmoirsquos are zero but F ne 0For this case draw the FBD of all mechanism

members

(6) Calculate T2 in all of the cases in steps 4 and 5(7) Superpose all T2 rsquos calculated in step 6 so as to

obtain total torque T2

2 2 I 2 II 2 III 2 IVT T T T T= + + +

E l

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2850

Example

E l

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2950

Example

I

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3050

(-)m2a

G2

T2I

2

I

I2ne0 m2ne0 F=0

Ii=0 mi=0 i=34

II

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3150

II

I3ne0 m3ne0 F=0

mi=0 Ii= i=24

III

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3250

T2III 4 (-)m4aG4

III

I4ne0 m4ne0 F=0

Ii=0 mi=0 i=23

IV

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3350

T2IV

F4

IV

Fne0

Ii=0 mi=0 i=234

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3450

2 2 I 2 II 2 III 2 IVT T T T T= + + +

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3550

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150983145983150 983156983144983141 983142983145983143983157983154983141983086 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983154983141 983155983144983151983159983150 983137983155 983151983142983155983141983156983156983141983140 983155983151 983137983155 983156983151 983143983141983150983141983154983137983156983141 983156983144983141

983140983161983150983137983149983145983139 983156983151983154983153983157983141 983151983142 983080983085983081983113α

983086 983108983154983137983159 983156983144983141 983142983154983141983141 983138983151983140983161 983140983145983137983143983154983137983149983155 983151983142 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141983149983141983139983144983137983150983145983155983149 983138983161 983137983152983152983148983161983145983150983143 983155983157983152983141983154983152983151983155983145983156983145983151983150 983152983154983145983150983139983145983152983148983141983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4050

983109 983148 983108 983156 983145 983156983144 983140 983145 983145 983143 983156 983124 983145 983140 983142 983156983144 983144 983145

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4150

983109983160983137983149983152983148983141 983108983141983156983141983154983149983145983150983141 983156983144983141 983140983154983145983158983145983150983143 983156983151983154983153983157983141 983124983090 983154983141983153983157983145983154983141983140 983142983151983154 983156983144983141 983149983141983139983144983137983150983145983155983149

983155983144983151983159983150 983145983150 983142983145983143983157983154983141 983145983150 983151983154983140983141983154 983156983151 983149983137983145983150983156983137983145983150 983156983144983141 983143983145983158983141983150 983149983151983156983145983151983150983086 983117983141983149983138983141983154 983090 983145983155

983138983137983148983137983150983139983141983140983086

2 3

2 4

23

3

O A 100 mm m 068 kg

O AB 90 m 10 kg

AB 400 mm I 00285 kgm

AG 100 mm

= =

= =

= =

=

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4250

2 2 2G3

G3

2B 1

3 G3

4 B

a 23927 14628 2804m s

14628tan 31

23927

a 2804 (211)

ˆa 2355u m s

m a (154)(2804) 4318 N

m a (132)(2355) 3109 N

= + =

α = α =

= micro

= minus

= =

= =

3 3

3

I (0012)(7670) 92 Nm

92

d 0021m4318

α = =

= =

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4350

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4450

983109983160983137983149983152983148983141

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4550

983109983160983137983149983152983148983141

983108983141983156983141983154983149983145983150983141 983156983144983141

983140983154983145983158983145983150983143 983156983151983154983153983157983141983124983090 983154983141983153983157983145983154983141983140 983142983151983154

983156983144983141 983152983157983149983152

983149983141983139983144983137983150983145983155983149983155983144983151983159983150 983145983150983142983145983143983157983154983141 983145983150 983151983154983140983141983154983156983151 983149983137983145983150983156983137983145983150

983156983144983141 983143983145983158983141983150983149983151983156983145983151983150983086983117983141983149983138983141983154 983090 983145983155983138983137983148983137983150983139983141983140983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 5050

Page 18: Theory of Machines Dynamic Analysis

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1850

2pq k =

O and A arecenter of

percussions

AA

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1950

Example The cylinder on

the 60˚ oblique plane is

pulled up by a rope with

tension force T at time t=0

as seen in figure

Calculate the necessarytension force T to pull the

cylinder up the oblique

plane so as to make theacceleration of the center

of mass (G) 1 ms2 (parallel to the

oblique plane)

Note Assume that there isno slippage between the

cylinder and the oblique

plane2R 400 mm r=200 mm I=03kg m= m=200 kg

600

R

r

G

T

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2050

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2150

Example

Determine the driving torque T2 to be applied to the crank (2) in

the Scotch-Yoke mechanism shown in figure in order to

maintain the given motion

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2250

Letrsquos draw the free body diagrams of the members of the mechanism

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2350

USE OF GRAPHICAL METHOD

IN DYNAMIC ANALYSIS

Transforming a 3 force+1 moment member into a

3 force member

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2450

=

=

=

=

Determining

the single force

equivalent of a

moment and a

force system

The arrow of theinertia force(ndash)maG must point

the samedirection with the

direction of theinertia torque (-)Iα

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2550

SUPERPOSITION PRINCIPLE

Applicable to linear systems

F(a)= A F(b)=B F(a+b)= A+B

k

b

k

a

k

a+b

k

A B A+B

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2650

DYNAMIC ANALYSIS BY USING

GRAPHICAL METHOD

(1) Perform position analysis to obtain distances and angles

(2) Perform kinematic analysis to obtain accelerations of

centroids and angular acclerations

(3) Determine dynamic forces(-maG) and dynamic moments

(-Iα) acting on the members

(4) For i th member assume mine0 and Iine0 but mass and

mass moment of inertia (mmoi) of all other members are

zero Do it for all members For each case draw FBD of

the members of the mechanism

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2750

DYNAMIC ANALYSIS BY USING

GRAPHICAL METHOD

(5) Assume all masses and mmoirsquos are zero but F ne 0For this case draw the FBD of all mechanism

members

(6) Calculate T2 in all of the cases in steps 4 and 5(7) Superpose all T2 rsquos calculated in step 6 so as to

obtain total torque T2

2 2 I 2 II 2 III 2 IVT T T T T= + + +

E l

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2850

Example

E l

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2950

Example

I

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3050

(-)m2a

G2

T2I

2

I

I2ne0 m2ne0 F=0

Ii=0 mi=0 i=34

II

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3150

II

I3ne0 m3ne0 F=0

mi=0 Ii= i=24

III

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3250

T2III 4 (-)m4aG4

III

I4ne0 m4ne0 F=0

Ii=0 mi=0 i=23

IV

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3350

T2IV

F4

IV

Fne0

Ii=0 mi=0 i=234

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3450

2 2 I 2 II 2 III 2 IVT T T T T= + + +

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3550

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150983145983150 983156983144983141 983142983145983143983157983154983141983086 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983154983141 983155983144983151983159983150 983137983155 983151983142983155983141983156983156983141983140 983155983151 983137983155 983156983151 983143983141983150983141983154983137983156983141 983156983144983141

983140983161983150983137983149983145983139 983156983151983154983153983157983141 983151983142 983080983085983081983113α

983086 983108983154983137983159 983156983144983141 983142983154983141983141 983138983151983140983161 983140983145983137983143983154983137983149983155 983151983142 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141983149983141983139983144983137983150983145983155983149 983138983161 983137983152983152983148983161983145983150983143 983155983157983152983141983154983152983151983155983145983156983145983151983150 983152983154983145983150983139983145983152983148983141983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4050

983109 983148 983108 983156 983145 983156983144 983140 983145 983145 983143 983156 983124 983145 983140 983142 983156983144 983144 983145

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4150

983109983160983137983149983152983148983141 983108983141983156983141983154983149983145983150983141 983156983144983141 983140983154983145983158983145983150983143 983156983151983154983153983157983141 983124983090 983154983141983153983157983145983154983141983140 983142983151983154 983156983144983141 983149983141983139983144983137983150983145983155983149

983155983144983151983159983150 983145983150 983142983145983143983157983154983141 983145983150 983151983154983140983141983154 983156983151 983149983137983145983150983156983137983145983150 983156983144983141 983143983145983158983141983150 983149983151983156983145983151983150983086 983117983141983149983138983141983154 983090 983145983155

983138983137983148983137983150983139983141983140983086

2 3

2 4

23

3

O A 100 mm m 068 kg

O AB 90 m 10 kg

AB 400 mm I 00285 kgm

AG 100 mm

= =

= =

= =

=

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4250

2 2 2G3

G3

2B 1

3 G3

4 B

a 23927 14628 2804m s

14628tan 31

23927

a 2804 (211)

ˆa 2355u m s

m a (154)(2804) 4318 N

m a (132)(2355) 3109 N

= + =

α = α =

= micro

= minus

= =

= =

3 3

3

I (0012)(7670) 92 Nm

92

d 0021m4318

α = =

= =

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4350

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4450

983109983160983137983149983152983148983141

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4550

983109983160983137983149983152983148983141

983108983141983156983141983154983149983145983150983141 983156983144983141

983140983154983145983158983145983150983143 983156983151983154983153983157983141983124983090 983154983141983153983157983145983154983141983140 983142983151983154

983156983144983141 983152983157983149983152

983149983141983139983144983137983150983145983155983149983155983144983151983159983150 983145983150983142983145983143983157983154983141 983145983150 983151983154983140983141983154983156983151 983149983137983145983150983156983137983145983150

983156983144983141 983143983145983158983141983150983149983151983156983145983151983150983086983117983141983149983138983141983154 983090 983145983155983138983137983148983137983150983139983141983140983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 5050

Page 19: Theory of Machines Dynamic Analysis

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 1950

Example The cylinder on

the 60˚ oblique plane is

pulled up by a rope with

tension force T at time t=0

as seen in figure

Calculate the necessarytension force T to pull the

cylinder up the oblique

plane so as to make theacceleration of the center

of mass (G) 1 ms2 (parallel to the

oblique plane)

Note Assume that there isno slippage between the

cylinder and the oblique

plane2R 400 mm r=200 mm I=03kg m= m=200 kg

600

R

r

G

T

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2050

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2150

Example

Determine the driving torque T2 to be applied to the crank (2) in

the Scotch-Yoke mechanism shown in figure in order to

maintain the given motion

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2250

Letrsquos draw the free body diagrams of the members of the mechanism

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2350

USE OF GRAPHICAL METHOD

IN DYNAMIC ANALYSIS

Transforming a 3 force+1 moment member into a

3 force member

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2450

=

=

=

=

Determining

the single force

equivalent of a

moment and a

force system

The arrow of theinertia force(ndash)maG must point

the samedirection with the

direction of theinertia torque (-)Iα

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2550

SUPERPOSITION PRINCIPLE

Applicable to linear systems

F(a)= A F(b)=B F(a+b)= A+B

k

b

k

a

k

a+b

k

A B A+B

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2650

DYNAMIC ANALYSIS BY USING

GRAPHICAL METHOD

(1) Perform position analysis to obtain distances and angles

(2) Perform kinematic analysis to obtain accelerations of

centroids and angular acclerations

(3) Determine dynamic forces(-maG) and dynamic moments

(-Iα) acting on the members

(4) For i th member assume mine0 and Iine0 but mass and

mass moment of inertia (mmoi) of all other members are

zero Do it for all members For each case draw FBD of

the members of the mechanism

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2750

DYNAMIC ANALYSIS BY USING

GRAPHICAL METHOD

(5) Assume all masses and mmoirsquos are zero but F ne 0For this case draw the FBD of all mechanism

members

(6) Calculate T2 in all of the cases in steps 4 and 5(7) Superpose all T2 rsquos calculated in step 6 so as to

obtain total torque T2

2 2 I 2 II 2 III 2 IVT T T T T= + + +

E l

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2850

Example

E l

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2950

Example

I

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3050

(-)m2a

G2

T2I

2

I

I2ne0 m2ne0 F=0

Ii=0 mi=0 i=34

II

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3150

II

I3ne0 m3ne0 F=0

mi=0 Ii= i=24

III

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3250

T2III 4 (-)m4aG4

III

I4ne0 m4ne0 F=0

Ii=0 mi=0 i=23

IV

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3350

T2IV

F4

IV

Fne0

Ii=0 mi=0 i=234

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3450

2 2 I 2 II 2 III 2 IVT T T T T= + + +

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3550

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150983145983150 983156983144983141 983142983145983143983157983154983141983086 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983154983141 983155983144983151983159983150 983137983155 983151983142983155983141983156983156983141983140 983155983151 983137983155 983156983151 983143983141983150983141983154983137983156983141 983156983144983141

983140983161983150983137983149983145983139 983156983151983154983153983157983141 983151983142 983080983085983081983113α

983086 983108983154983137983159 983156983144983141 983142983154983141983141 983138983151983140983161 983140983145983137983143983154983137983149983155 983151983142 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141983149983141983139983144983137983150983145983155983149 983138983161 983137983152983152983148983161983145983150983143 983155983157983152983141983154983152983151983155983145983156983145983151983150 983152983154983145983150983139983145983152983148983141983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4050

983109 983148 983108 983156 983145 983156983144 983140 983145 983145 983143 983156 983124 983145 983140 983142 983156983144 983144 983145

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4150

983109983160983137983149983152983148983141 983108983141983156983141983154983149983145983150983141 983156983144983141 983140983154983145983158983145983150983143 983156983151983154983153983157983141 983124983090 983154983141983153983157983145983154983141983140 983142983151983154 983156983144983141 983149983141983139983144983137983150983145983155983149

983155983144983151983159983150 983145983150 983142983145983143983157983154983141 983145983150 983151983154983140983141983154 983156983151 983149983137983145983150983156983137983145983150 983156983144983141 983143983145983158983141983150 983149983151983156983145983151983150983086 983117983141983149983138983141983154 983090 983145983155

983138983137983148983137983150983139983141983140983086

2 3

2 4

23

3

O A 100 mm m 068 kg

O AB 90 m 10 kg

AB 400 mm I 00285 kgm

AG 100 mm

= =

= =

= =

=

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4250

2 2 2G3

G3

2B 1

3 G3

4 B

a 23927 14628 2804m s

14628tan 31

23927

a 2804 (211)

ˆa 2355u m s

m a (154)(2804) 4318 N

m a (132)(2355) 3109 N

= + =

α = α =

= micro

= minus

= =

= =

3 3

3

I (0012)(7670) 92 Nm

92

d 0021m4318

α = =

= =

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4350

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4450

983109983160983137983149983152983148983141

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4550

983109983160983137983149983152983148983141

983108983141983156983141983154983149983145983150983141 983156983144983141

983140983154983145983158983145983150983143 983156983151983154983153983157983141983124983090 983154983141983153983157983145983154983141983140 983142983151983154

983156983144983141 983152983157983149983152

983149983141983139983144983137983150983145983155983149983155983144983151983159983150 983145983150983142983145983143983157983154983141 983145983150 983151983154983140983141983154983156983151 983149983137983145983150983156983137983145983150

983156983144983141 983143983145983158983141983150983149983151983156983145983151983150983086983117983141983149983138983141983154 983090 983145983155983138983137983148983137983150983139983141983140983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 5050

Page 20: Theory of Machines Dynamic Analysis

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2050

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2150

Example

Determine the driving torque T2 to be applied to the crank (2) in

the Scotch-Yoke mechanism shown in figure in order to

maintain the given motion

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2250

Letrsquos draw the free body diagrams of the members of the mechanism

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2350

USE OF GRAPHICAL METHOD

IN DYNAMIC ANALYSIS

Transforming a 3 force+1 moment member into a

3 force member

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2450

=

=

=

=

Determining

the single force

equivalent of a

moment and a

force system

The arrow of theinertia force(ndash)maG must point

the samedirection with the

direction of theinertia torque (-)Iα

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2550

SUPERPOSITION PRINCIPLE

Applicable to linear systems

F(a)= A F(b)=B F(a+b)= A+B

k

b

k

a

k

a+b

k

A B A+B

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2650

DYNAMIC ANALYSIS BY USING

GRAPHICAL METHOD

(1) Perform position analysis to obtain distances and angles

(2) Perform kinematic analysis to obtain accelerations of

centroids and angular acclerations

(3) Determine dynamic forces(-maG) and dynamic moments

(-Iα) acting on the members

(4) For i th member assume mine0 and Iine0 but mass and

mass moment of inertia (mmoi) of all other members are

zero Do it for all members For each case draw FBD of

the members of the mechanism

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2750

DYNAMIC ANALYSIS BY USING

GRAPHICAL METHOD

(5) Assume all masses and mmoirsquos are zero but F ne 0For this case draw the FBD of all mechanism

members

(6) Calculate T2 in all of the cases in steps 4 and 5(7) Superpose all T2 rsquos calculated in step 6 so as to

obtain total torque T2

2 2 I 2 II 2 III 2 IVT T T T T= + + +

E l

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2850

Example

E l

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2950

Example

I

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3050

(-)m2a

G2

T2I

2

I

I2ne0 m2ne0 F=0

Ii=0 mi=0 i=34

II

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3150

II

I3ne0 m3ne0 F=0

mi=0 Ii= i=24

III

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3250

T2III 4 (-)m4aG4

III

I4ne0 m4ne0 F=0

Ii=0 mi=0 i=23

IV

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3350

T2IV

F4

IV

Fne0

Ii=0 mi=0 i=234

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3450

2 2 I 2 II 2 III 2 IVT T T T T= + + +

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3550

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150983145983150 983156983144983141 983142983145983143983157983154983141983086 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983154983141 983155983144983151983159983150 983137983155 983151983142983155983141983156983156983141983140 983155983151 983137983155 983156983151 983143983141983150983141983154983137983156983141 983156983144983141

983140983161983150983137983149983145983139 983156983151983154983153983157983141 983151983142 983080983085983081983113α

983086 983108983154983137983159 983156983144983141 983142983154983141983141 983138983151983140983161 983140983145983137983143983154983137983149983155 983151983142 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141983149983141983139983144983137983150983145983155983149 983138983161 983137983152983152983148983161983145983150983143 983155983157983152983141983154983152983151983155983145983156983145983151983150 983152983154983145983150983139983145983152983148983141983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4050

983109 983148 983108 983156 983145 983156983144 983140 983145 983145 983143 983156 983124 983145 983140 983142 983156983144 983144 983145

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4150

983109983160983137983149983152983148983141 983108983141983156983141983154983149983145983150983141 983156983144983141 983140983154983145983158983145983150983143 983156983151983154983153983157983141 983124983090 983154983141983153983157983145983154983141983140 983142983151983154 983156983144983141 983149983141983139983144983137983150983145983155983149

983155983144983151983159983150 983145983150 983142983145983143983157983154983141 983145983150 983151983154983140983141983154 983156983151 983149983137983145983150983156983137983145983150 983156983144983141 983143983145983158983141983150 983149983151983156983145983151983150983086 983117983141983149983138983141983154 983090 983145983155

983138983137983148983137983150983139983141983140983086

2 3

2 4

23

3

O A 100 mm m 068 kg

O AB 90 m 10 kg

AB 400 mm I 00285 kgm

AG 100 mm

= =

= =

= =

=

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4250

2 2 2G3

G3

2B 1

3 G3

4 B

a 23927 14628 2804m s

14628tan 31

23927

a 2804 (211)

ˆa 2355u m s

m a (154)(2804) 4318 N

m a (132)(2355) 3109 N

= + =

α = α =

= micro

= minus

= =

= =

3 3

3

I (0012)(7670) 92 Nm

92

d 0021m4318

α = =

= =

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4350

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4450

983109983160983137983149983152983148983141

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4550

983109983160983137983149983152983148983141

983108983141983156983141983154983149983145983150983141 983156983144983141

983140983154983145983158983145983150983143 983156983151983154983153983157983141983124983090 983154983141983153983157983145983154983141983140 983142983151983154

983156983144983141 983152983157983149983152

983149983141983139983144983137983150983145983155983149983155983144983151983159983150 983145983150983142983145983143983157983154983141 983145983150 983151983154983140983141983154983156983151 983149983137983145983150983156983137983145983150

983156983144983141 983143983145983158983141983150983149983151983156983145983151983150983086983117983141983149983138983141983154 983090 983145983155983138983137983148983137983150983139983141983140983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 5050

Page 21: Theory of Machines Dynamic Analysis

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2150

Example

Determine the driving torque T2 to be applied to the crank (2) in

the Scotch-Yoke mechanism shown in figure in order to

maintain the given motion

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2250

Letrsquos draw the free body diagrams of the members of the mechanism

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2350

USE OF GRAPHICAL METHOD

IN DYNAMIC ANALYSIS

Transforming a 3 force+1 moment member into a

3 force member

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2450

=

=

=

=

Determining

the single force

equivalent of a

moment and a

force system

The arrow of theinertia force(ndash)maG must point

the samedirection with the

direction of theinertia torque (-)Iα

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2550

SUPERPOSITION PRINCIPLE

Applicable to linear systems

F(a)= A F(b)=B F(a+b)= A+B

k

b

k

a

k

a+b

k

A B A+B

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2650

DYNAMIC ANALYSIS BY USING

GRAPHICAL METHOD

(1) Perform position analysis to obtain distances and angles

(2) Perform kinematic analysis to obtain accelerations of

centroids and angular acclerations

(3) Determine dynamic forces(-maG) and dynamic moments

(-Iα) acting on the members

(4) For i th member assume mine0 and Iine0 but mass and

mass moment of inertia (mmoi) of all other members are

zero Do it for all members For each case draw FBD of

the members of the mechanism

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2750

DYNAMIC ANALYSIS BY USING

GRAPHICAL METHOD

(5) Assume all masses and mmoirsquos are zero but F ne 0For this case draw the FBD of all mechanism

members

(6) Calculate T2 in all of the cases in steps 4 and 5(7) Superpose all T2 rsquos calculated in step 6 so as to

obtain total torque T2

2 2 I 2 II 2 III 2 IVT T T T T= + + +

E l

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2850

Example

E l

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2950

Example

I

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3050

(-)m2a

G2

T2I

2

I

I2ne0 m2ne0 F=0

Ii=0 mi=0 i=34

II

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3150

II

I3ne0 m3ne0 F=0

mi=0 Ii= i=24

III

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3250

T2III 4 (-)m4aG4

III

I4ne0 m4ne0 F=0

Ii=0 mi=0 i=23

IV

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3350

T2IV

F4

IV

Fne0

Ii=0 mi=0 i=234

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3450

2 2 I 2 II 2 III 2 IVT T T T T= + + +

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3550

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150983145983150 983156983144983141 983142983145983143983157983154983141983086 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983154983141 983155983144983151983159983150 983137983155 983151983142983155983141983156983156983141983140 983155983151 983137983155 983156983151 983143983141983150983141983154983137983156983141 983156983144983141

983140983161983150983137983149983145983139 983156983151983154983153983157983141 983151983142 983080983085983081983113α

983086 983108983154983137983159 983156983144983141 983142983154983141983141 983138983151983140983161 983140983145983137983143983154983137983149983155 983151983142 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141983149983141983139983144983137983150983145983155983149 983138983161 983137983152983152983148983161983145983150983143 983155983157983152983141983154983152983151983155983145983156983145983151983150 983152983154983145983150983139983145983152983148983141983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4050

983109 983148 983108 983156 983145 983156983144 983140 983145 983145 983143 983156 983124 983145 983140 983142 983156983144 983144 983145

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4150

983109983160983137983149983152983148983141 983108983141983156983141983154983149983145983150983141 983156983144983141 983140983154983145983158983145983150983143 983156983151983154983153983157983141 983124983090 983154983141983153983157983145983154983141983140 983142983151983154 983156983144983141 983149983141983139983144983137983150983145983155983149

983155983144983151983159983150 983145983150 983142983145983143983157983154983141 983145983150 983151983154983140983141983154 983156983151 983149983137983145983150983156983137983145983150 983156983144983141 983143983145983158983141983150 983149983151983156983145983151983150983086 983117983141983149983138983141983154 983090 983145983155

983138983137983148983137983150983139983141983140983086

2 3

2 4

23

3

O A 100 mm m 068 kg

O AB 90 m 10 kg

AB 400 mm I 00285 kgm

AG 100 mm

= =

= =

= =

=

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4250

2 2 2G3

G3

2B 1

3 G3

4 B

a 23927 14628 2804m s

14628tan 31

23927

a 2804 (211)

ˆa 2355u m s

m a (154)(2804) 4318 N

m a (132)(2355) 3109 N

= + =

α = α =

= micro

= minus

= =

= =

3 3

3

I (0012)(7670) 92 Nm

92

d 0021m4318

α = =

= =

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4350

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4450

983109983160983137983149983152983148983141

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4550

983109983160983137983149983152983148983141

983108983141983156983141983154983149983145983150983141 983156983144983141

983140983154983145983158983145983150983143 983156983151983154983153983157983141983124983090 983154983141983153983157983145983154983141983140 983142983151983154

983156983144983141 983152983157983149983152

983149983141983139983144983137983150983145983155983149983155983144983151983159983150 983145983150983142983145983143983157983154983141 983145983150 983151983154983140983141983154983156983151 983149983137983145983150983156983137983145983150

983156983144983141 983143983145983158983141983150983149983151983156983145983151983150983086983117983141983149983138983141983154 983090 983145983155983138983137983148983137983150983139983141983140983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 5050

Page 22: Theory of Machines Dynamic Analysis

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2250

Letrsquos draw the free body diagrams of the members of the mechanism

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2350

USE OF GRAPHICAL METHOD

IN DYNAMIC ANALYSIS

Transforming a 3 force+1 moment member into a

3 force member

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2450

=

=

=

=

Determining

the single force

equivalent of a

moment and a

force system

The arrow of theinertia force(ndash)maG must point

the samedirection with the

direction of theinertia torque (-)Iα

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2550

SUPERPOSITION PRINCIPLE

Applicable to linear systems

F(a)= A F(b)=B F(a+b)= A+B

k

b

k

a

k

a+b

k

A B A+B

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2650

DYNAMIC ANALYSIS BY USING

GRAPHICAL METHOD

(1) Perform position analysis to obtain distances and angles

(2) Perform kinematic analysis to obtain accelerations of

centroids and angular acclerations

(3) Determine dynamic forces(-maG) and dynamic moments

(-Iα) acting on the members

(4) For i th member assume mine0 and Iine0 but mass and

mass moment of inertia (mmoi) of all other members are

zero Do it for all members For each case draw FBD of

the members of the mechanism

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2750

DYNAMIC ANALYSIS BY USING

GRAPHICAL METHOD

(5) Assume all masses and mmoirsquos are zero but F ne 0For this case draw the FBD of all mechanism

members

(6) Calculate T2 in all of the cases in steps 4 and 5(7) Superpose all T2 rsquos calculated in step 6 so as to

obtain total torque T2

2 2 I 2 II 2 III 2 IVT T T T T= + + +

E l

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2850

Example

E l

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2950

Example

I

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3050

(-)m2a

G2

T2I

2

I

I2ne0 m2ne0 F=0

Ii=0 mi=0 i=34

II

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3150

II

I3ne0 m3ne0 F=0

mi=0 Ii= i=24

III

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3250

T2III 4 (-)m4aG4

III

I4ne0 m4ne0 F=0

Ii=0 mi=0 i=23

IV

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3350

T2IV

F4

IV

Fne0

Ii=0 mi=0 i=234

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3450

2 2 I 2 II 2 III 2 IVT T T T T= + + +

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3550

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150983145983150 983156983144983141 983142983145983143983157983154983141983086 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983154983141 983155983144983151983159983150 983137983155 983151983142983155983141983156983156983141983140 983155983151 983137983155 983156983151 983143983141983150983141983154983137983156983141 983156983144983141

983140983161983150983137983149983145983139 983156983151983154983153983157983141 983151983142 983080983085983081983113α

983086 983108983154983137983159 983156983144983141 983142983154983141983141 983138983151983140983161 983140983145983137983143983154983137983149983155 983151983142 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141983149983141983139983144983137983150983145983155983149 983138983161 983137983152983152983148983161983145983150983143 983155983157983152983141983154983152983151983155983145983156983145983151983150 983152983154983145983150983139983145983152983148983141983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4050

983109 983148 983108 983156 983145 983156983144 983140 983145 983145 983143 983156 983124 983145 983140 983142 983156983144 983144 983145

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4150

983109983160983137983149983152983148983141 983108983141983156983141983154983149983145983150983141 983156983144983141 983140983154983145983158983145983150983143 983156983151983154983153983157983141 983124983090 983154983141983153983157983145983154983141983140 983142983151983154 983156983144983141 983149983141983139983144983137983150983145983155983149

983155983144983151983159983150 983145983150 983142983145983143983157983154983141 983145983150 983151983154983140983141983154 983156983151 983149983137983145983150983156983137983145983150 983156983144983141 983143983145983158983141983150 983149983151983156983145983151983150983086 983117983141983149983138983141983154 983090 983145983155

983138983137983148983137983150983139983141983140983086

2 3

2 4

23

3

O A 100 mm m 068 kg

O AB 90 m 10 kg

AB 400 mm I 00285 kgm

AG 100 mm

= =

= =

= =

=

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4250

2 2 2G3

G3

2B 1

3 G3

4 B

a 23927 14628 2804m s

14628tan 31

23927

a 2804 (211)

ˆa 2355u m s

m a (154)(2804) 4318 N

m a (132)(2355) 3109 N

= + =

α = α =

= micro

= minus

= =

= =

3 3

3

I (0012)(7670) 92 Nm

92

d 0021m4318

α = =

= =

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4350

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4450

983109983160983137983149983152983148983141

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4550

983109983160983137983149983152983148983141

983108983141983156983141983154983149983145983150983141 983156983144983141

983140983154983145983158983145983150983143 983156983151983154983153983157983141983124983090 983154983141983153983157983145983154983141983140 983142983151983154

983156983144983141 983152983157983149983152

983149983141983139983144983137983150983145983155983149983155983144983151983159983150 983145983150983142983145983143983157983154983141 983145983150 983151983154983140983141983154983156983151 983149983137983145983150983156983137983145983150

983156983144983141 983143983145983158983141983150983149983151983156983145983151983150983086983117983141983149983138983141983154 983090 983145983155983138983137983148983137983150983139983141983140983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 5050

Page 23: Theory of Machines Dynamic Analysis

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2350

USE OF GRAPHICAL METHOD

IN DYNAMIC ANALYSIS

Transforming a 3 force+1 moment member into a

3 force member

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2450

=

=

=

=

Determining

the single force

equivalent of a

moment and a

force system

The arrow of theinertia force(ndash)maG must point

the samedirection with the

direction of theinertia torque (-)Iα

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2550

SUPERPOSITION PRINCIPLE

Applicable to linear systems

F(a)= A F(b)=B F(a+b)= A+B

k

b

k

a

k

a+b

k

A B A+B

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2650

DYNAMIC ANALYSIS BY USING

GRAPHICAL METHOD

(1) Perform position analysis to obtain distances and angles

(2) Perform kinematic analysis to obtain accelerations of

centroids and angular acclerations

(3) Determine dynamic forces(-maG) and dynamic moments

(-Iα) acting on the members

(4) For i th member assume mine0 and Iine0 but mass and

mass moment of inertia (mmoi) of all other members are

zero Do it for all members For each case draw FBD of

the members of the mechanism

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2750

DYNAMIC ANALYSIS BY USING

GRAPHICAL METHOD

(5) Assume all masses and mmoirsquos are zero but F ne 0For this case draw the FBD of all mechanism

members

(6) Calculate T2 in all of the cases in steps 4 and 5(7) Superpose all T2 rsquos calculated in step 6 so as to

obtain total torque T2

2 2 I 2 II 2 III 2 IVT T T T T= + + +

E l

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2850

Example

E l

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2950

Example

I

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3050

(-)m2a

G2

T2I

2

I

I2ne0 m2ne0 F=0

Ii=0 mi=0 i=34

II

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3150

II

I3ne0 m3ne0 F=0

mi=0 Ii= i=24

III

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3250

T2III 4 (-)m4aG4

III

I4ne0 m4ne0 F=0

Ii=0 mi=0 i=23

IV

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3350

T2IV

F4

IV

Fne0

Ii=0 mi=0 i=234

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3450

2 2 I 2 II 2 III 2 IVT T T T T= + + +

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3550

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150983145983150 983156983144983141 983142983145983143983157983154983141983086 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983154983141 983155983144983151983159983150 983137983155 983151983142983155983141983156983156983141983140 983155983151 983137983155 983156983151 983143983141983150983141983154983137983156983141 983156983144983141

983140983161983150983137983149983145983139 983156983151983154983153983157983141 983151983142 983080983085983081983113α

983086 983108983154983137983159 983156983144983141 983142983154983141983141 983138983151983140983161 983140983145983137983143983154983137983149983155 983151983142 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141983149983141983139983144983137983150983145983155983149 983138983161 983137983152983152983148983161983145983150983143 983155983157983152983141983154983152983151983155983145983156983145983151983150 983152983154983145983150983139983145983152983148983141983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4050

983109 983148 983108 983156 983145 983156983144 983140 983145 983145 983143 983156 983124 983145 983140 983142 983156983144 983144 983145

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4150

983109983160983137983149983152983148983141 983108983141983156983141983154983149983145983150983141 983156983144983141 983140983154983145983158983145983150983143 983156983151983154983153983157983141 983124983090 983154983141983153983157983145983154983141983140 983142983151983154 983156983144983141 983149983141983139983144983137983150983145983155983149

983155983144983151983159983150 983145983150 983142983145983143983157983154983141 983145983150 983151983154983140983141983154 983156983151 983149983137983145983150983156983137983145983150 983156983144983141 983143983145983158983141983150 983149983151983156983145983151983150983086 983117983141983149983138983141983154 983090 983145983155

983138983137983148983137983150983139983141983140983086

2 3

2 4

23

3

O A 100 mm m 068 kg

O AB 90 m 10 kg

AB 400 mm I 00285 kgm

AG 100 mm

= =

= =

= =

=

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4250

2 2 2G3

G3

2B 1

3 G3

4 B

a 23927 14628 2804m s

14628tan 31

23927

a 2804 (211)

ˆa 2355u m s

m a (154)(2804) 4318 N

m a (132)(2355) 3109 N

= + =

α = α =

= micro

= minus

= =

= =

3 3

3

I (0012)(7670) 92 Nm

92

d 0021m4318

α = =

= =

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4350

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4450

983109983160983137983149983152983148983141

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4550

983109983160983137983149983152983148983141

983108983141983156983141983154983149983145983150983141 983156983144983141

983140983154983145983158983145983150983143 983156983151983154983153983157983141983124983090 983154983141983153983157983145983154983141983140 983142983151983154

983156983144983141 983152983157983149983152

983149983141983139983144983137983150983145983155983149983155983144983151983159983150 983145983150983142983145983143983157983154983141 983145983150 983151983154983140983141983154983156983151 983149983137983145983150983156983137983145983150

983156983144983141 983143983145983158983141983150983149983151983156983145983151983150983086983117983141983149983138983141983154 983090 983145983155983138983137983148983137983150983139983141983140983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 5050

Page 24: Theory of Machines Dynamic Analysis

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2450

=

=

=

=

Determining

the single force

equivalent of a

moment and a

force system

The arrow of theinertia force(ndash)maG must point

the samedirection with the

direction of theinertia torque (-)Iα

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2550

SUPERPOSITION PRINCIPLE

Applicable to linear systems

F(a)= A F(b)=B F(a+b)= A+B

k

b

k

a

k

a+b

k

A B A+B

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2650

DYNAMIC ANALYSIS BY USING

GRAPHICAL METHOD

(1) Perform position analysis to obtain distances and angles

(2) Perform kinematic analysis to obtain accelerations of

centroids and angular acclerations

(3) Determine dynamic forces(-maG) and dynamic moments

(-Iα) acting on the members

(4) For i th member assume mine0 and Iine0 but mass and

mass moment of inertia (mmoi) of all other members are

zero Do it for all members For each case draw FBD of

the members of the mechanism

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2750

DYNAMIC ANALYSIS BY USING

GRAPHICAL METHOD

(5) Assume all masses and mmoirsquos are zero but F ne 0For this case draw the FBD of all mechanism

members

(6) Calculate T2 in all of the cases in steps 4 and 5(7) Superpose all T2 rsquos calculated in step 6 so as to

obtain total torque T2

2 2 I 2 II 2 III 2 IVT T T T T= + + +

E l

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2850

Example

E l

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2950

Example

I

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3050

(-)m2a

G2

T2I

2

I

I2ne0 m2ne0 F=0

Ii=0 mi=0 i=34

II

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3150

II

I3ne0 m3ne0 F=0

mi=0 Ii= i=24

III

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3250

T2III 4 (-)m4aG4

III

I4ne0 m4ne0 F=0

Ii=0 mi=0 i=23

IV

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3350

T2IV

F4

IV

Fne0

Ii=0 mi=0 i=234

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3450

2 2 I 2 II 2 III 2 IVT T T T T= + + +

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3550

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150983145983150 983156983144983141 983142983145983143983157983154983141983086 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983154983141 983155983144983151983159983150 983137983155 983151983142983155983141983156983156983141983140 983155983151 983137983155 983156983151 983143983141983150983141983154983137983156983141 983156983144983141

983140983161983150983137983149983145983139 983156983151983154983153983157983141 983151983142 983080983085983081983113α

983086 983108983154983137983159 983156983144983141 983142983154983141983141 983138983151983140983161 983140983145983137983143983154983137983149983155 983151983142 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141983149983141983139983144983137983150983145983155983149 983138983161 983137983152983152983148983161983145983150983143 983155983157983152983141983154983152983151983155983145983156983145983151983150 983152983154983145983150983139983145983152983148983141983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4050

983109 983148 983108 983156 983145 983156983144 983140 983145 983145 983143 983156 983124 983145 983140 983142 983156983144 983144 983145

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4150

983109983160983137983149983152983148983141 983108983141983156983141983154983149983145983150983141 983156983144983141 983140983154983145983158983145983150983143 983156983151983154983153983157983141 983124983090 983154983141983153983157983145983154983141983140 983142983151983154 983156983144983141 983149983141983139983144983137983150983145983155983149

983155983144983151983159983150 983145983150 983142983145983143983157983154983141 983145983150 983151983154983140983141983154 983156983151 983149983137983145983150983156983137983145983150 983156983144983141 983143983145983158983141983150 983149983151983156983145983151983150983086 983117983141983149983138983141983154 983090 983145983155

983138983137983148983137983150983139983141983140983086

2 3

2 4

23

3

O A 100 mm m 068 kg

O AB 90 m 10 kg

AB 400 mm I 00285 kgm

AG 100 mm

= =

= =

= =

=

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4250

2 2 2G3

G3

2B 1

3 G3

4 B

a 23927 14628 2804m s

14628tan 31

23927

a 2804 (211)

ˆa 2355u m s

m a (154)(2804) 4318 N

m a (132)(2355) 3109 N

= + =

α = α =

= micro

= minus

= =

= =

3 3

3

I (0012)(7670) 92 Nm

92

d 0021m4318

α = =

= =

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4350

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4450

983109983160983137983149983152983148983141

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4550

983109983160983137983149983152983148983141

983108983141983156983141983154983149983145983150983141 983156983144983141

983140983154983145983158983145983150983143 983156983151983154983153983157983141983124983090 983154983141983153983157983145983154983141983140 983142983151983154

983156983144983141 983152983157983149983152

983149983141983139983144983137983150983145983155983149983155983144983151983159983150 983145983150983142983145983143983157983154983141 983145983150 983151983154983140983141983154983156983151 983149983137983145983150983156983137983145983150

983156983144983141 983143983145983158983141983150983149983151983156983145983151983150983086983117983141983149983138983141983154 983090 983145983155983138983137983148983137983150983139983141983140983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 5050

Page 25: Theory of Machines Dynamic Analysis

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2550

SUPERPOSITION PRINCIPLE

Applicable to linear systems

F(a)= A F(b)=B F(a+b)= A+B

k

b

k

a

k

a+b

k

A B A+B

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2650

DYNAMIC ANALYSIS BY USING

GRAPHICAL METHOD

(1) Perform position analysis to obtain distances and angles

(2) Perform kinematic analysis to obtain accelerations of

centroids and angular acclerations

(3) Determine dynamic forces(-maG) and dynamic moments

(-Iα) acting on the members

(4) For i th member assume mine0 and Iine0 but mass and

mass moment of inertia (mmoi) of all other members are

zero Do it for all members For each case draw FBD of

the members of the mechanism

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2750

DYNAMIC ANALYSIS BY USING

GRAPHICAL METHOD

(5) Assume all masses and mmoirsquos are zero but F ne 0For this case draw the FBD of all mechanism

members

(6) Calculate T2 in all of the cases in steps 4 and 5(7) Superpose all T2 rsquos calculated in step 6 so as to

obtain total torque T2

2 2 I 2 II 2 III 2 IVT T T T T= + + +

E l

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2850

Example

E l

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2950

Example

I

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3050

(-)m2a

G2

T2I

2

I

I2ne0 m2ne0 F=0

Ii=0 mi=0 i=34

II

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3150

II

I3ne0 m3ne0 F=0

mi=0 Ii= i=24

III

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3250

T2III 4 (-)m4aG4

III

I4ne0 m4ne0 F=0

Ii=0 mi=0 i=23

IV

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3350

T2IV

F4

IV

Fne0

Ii=0 mi=0 i=234

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3450

2 2 I 2 II 2 III 2 IVT T T T T= + + +

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3550

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150983145983150 983156983144983141 983142983145983143983157983154983141983086 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983154983141 983155983144983151983159983150 983137983155 983151983142983155983141983156983156983141983140 983155983151 983137983155 983156983151 983143983141983150983141983154983137983156983141 983156983144983141

983140983161983150983137983149983145983139 983156983151983154983153983157983141 983151983142 983080983085983081983113α

983086 983108983154983137983159 983156983144983141 983142983154983141983141 983138983151983140983161 983140983145983137983143983154983137983149983155 983151983142 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141983149983141983139983144983137983150983145983155983149 983138983161 983137983152983152983148983161983145983150983143 983155983157983152983141983154983152983151983155983145983156983145983151983150 983152983154983145983150983139983145983152983148983141983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4050

983109 983148 983108 983156 983145 983156983144 983140 983145 983145 983143 983156 983124 983145 983140 983142 983156983144 983144 983145

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4150

983109983160983137983149983152983148983141 983108983141983156983141983154983149983145983150983141 983156983144983141 983140983154983145983158983145983150983143 983156983151983154983153983157983141 983124983090 983154983141983153983157983145983154983141983140 983142983151983154 983156983144983141 983149983141983139983144983137983150983145983155983149

983155983144983151983159983150 983145983150 983142983145983143983157983154983141 983145983150 983151983154983140983141983154 983156983151 983149983137983145983150983156983137983145983150 983156983144983141 983143983145983158983141983150 983149983151983156983145983151983150983086 983117983141983149983138983141983154 983090 983145983155

983138983137983148983137983150983139983141983140983086

2 3

2 4

23

3

O A 100 mm m 068 kg

O AB 90 m 10 kg

AB 400 mm I 00285 kgm

AG 100 mm

= =

= =

= =

=

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4250

2 2 2G3

G3

2B 1

3 G3

4 B

a 23927 14628 2804m s

14628tan 31

23927

a 2804 (211)

ˆa 2355u m s

m a (154)(2804) 4318 N

m a (132)(2355) 3109 N

= + =

α = α =

= micro

= minus

= =

= =

3 3

3

I (0012)(7670) 92 Nm

92

d 0021m4318

α = =

= =

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4350

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4450

983109983160983137983149983152983148983141

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4550

983109983160983137983149983152983148983141

983108983141983156983141983154983149983145983150983141 983156983144983141

983140983154983145983158983145983150983143 983156983151983154983153983157983141983124983090 983154983141983153983157983145983154983141983140 983142983151983154

983156983144983141 983152983157983149983152

983149983141983139983144983137983150983145983155983149983155983144983151983159983150 983145983150983142983145983143983157983154983141 983145983150 983151983154983140983141983154983156983151 983149983137983145983150983156983137983145983150

983156983144983141 983143983145983158983141983150983149983151983156983145983151983150983086983117983141983149983138983141983154 983090 983145983155983138983137983148983137983150983139983141983140983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 5050

Page 26: Theory of Machines Dynamic Analysis

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2650

DYNAMIC ANALYSIS BY USING

GRAPHICAL METHOD

(1) Perform position analysis to obtain distances and angles

(2) Perform kinematic analysis to obtain accelerations of

centroids and angular acclerations

(3) Determine dynamic forces(-maG) and dynamic moments

(-Iα) acting on the members

(4) For i th member assume mine0 and Iine0 but mass and

mass moment of inertia (mmoi) of all other members are

zero Do it for all members For each case draw FBD of

the members of the mechanism

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2750

DYNAMIC ANALYSIS BY USING

GRAPHICAL METHOD

(5) Assume all masses and mmoirsquos are zero but F ne 0For this case draw the FBD of all mechanism

members

(6) Calculate T2 in all of the cases in steps 4 and 5(7) Superpose all T2 rsquos calculated in step 6 so as to

obtain total torque T2

2 2 I 2 II 2 III 2 IVT T T T T= + + +

E l

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2850

Example

E l

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2950

Example

I

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3050

(-)m2a

G2

T2I

2

I

I2ne0 m2ne0 F=0

Ii=0 mi=0 i=34

II

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3150

II

I3ne0 m3ne0 F=0

mi=0 Ii= i=24

III

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3250

T2III 4 (-)m4aG4

III

I4ne0 m4ne0 F=0

Ii=0 mi=0 i=23

IV

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3350

T2IV

F4

IV

Fne0

Ii=0 mi=0 i=234

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3450

2 2 I 2 II 2 III 2 IVT T T T T= + + +

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3550

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150983145983150 983156983144983141 983142983145983143983157983154983141983086 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983154983141 983155983144983151983159983150 983137983155 983151983142983155983141983156983156983141983140 983155983151 983137983155 983156983151 983143983141983150983141983154983137983156983141 983156983144983141

983140983161983150983137983149983145983139 983156983151983154983153983157983141 983151983142 983080983085983081983113α

983086 983108983154983137983159 983156983144983141 983142983154983141983141 983138983151983140983161 983140983145983137983143983154983137983149983155 983151983142 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141983149983141983139983144983137983150983145983155983149 983138983161 983137983152983152983148983161983145983150983143 983155983157983152983141983154983152983151983155983145983156983145983151983150 983152983154983145983150983139983145983152983148983141983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4050

983109 983148 983108 983156 983145 983156983144 983140 983145 983145 983143 983156 983124 983145 983140 983142 983156983144 983144 983145

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4150

983109983160983137983149983152983148983141 983108983141983156983141983154983149983145983150983141 983156983144983141 983140983154983145983158983145983150983143 983156983151983154983153983157983141 983124983090 983154983141983153983157983145983154983141983140 983142983151983154 983156983144983141 983149983141983139983144983137983150983145983155983149

983155983144983151983159983150 983145983150 983142983145983143983157983154983141 983145983150 983151983154983140983141983154 983156983151 983149983137983145983150983156983137983145983150 983156983144983141 983143983145983158983141983150 983149983151983156983145983151983150983086 983117983141983149983138983141983154 983090 983145983155

983138983137983148983137983150983139983141983140983086

2 3

2 4

23

3

O A 100 mm m 068 kg

O AB 90 m 10 kg

AB 400 mm I 00285 kgm

AG 100 mm

= =

= =

= =

=

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4250

2 2 2G3

G3

2B 1

3 G3

4 B

a 23927 14628 2804m s

14628tan 31

23927

a 2804 (211)

ˆa 2355u m s

m a (154)(2804) 4318 N

m a (132)(2355) 3109 N

= + =

α = α =

= micro

= minus

= =

= =

3 3

3

I (0012)(7670) 92 Nm

92

d 0021m4318

α = =

= =

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4350

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4450

983109983160983137983149983152983148983141

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4550

983109983160983137983149983152983148983141

983108983141983156983141983154983149983145983150983141 983156983144983141

983140983154983145983158983145983150983143 983156983151983154983153983157983141983124983090 983154983141983153983157983145983154983141983140 983142983151983154

983156983144983141 983152983157983149983152

983149983141983139983144983137983150983145983155983149983155983144983151983159983150 983145983150983142983145983143983157983154983141 983145983150 983151983154983140983141983154983156983151 983149983137983145983150983156983137983145983150

983156983144983141 983143983145983158983141983150983149983151983156983145983151983150983086983117983141983149983138983141983154 983090 983145983155983138983137983148983137983150983139983141983140983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 5050

Page 27: Theory of Machines Dynamic Analysis

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2750

DYNAMIC ANALYSIS BY USING

GRAPHICAL METHOD

(5) Assume all masses and mmoirsquos are zero but F ne 0For this case draw the FBD of all mechanism

members

(6) Calculate T2 in all of the cases in steps 4 and 5(7) Superpose all T2 rsquos calculated in step 6 so as to

obtain total torque T2

2 2 I 2 II 2 III 2 IVT T T T T= + + +

E l

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2850

Example

E l

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2950

Example

I

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3050

(-)m2a

G2

T2I

2

I

I2ne0 m2ne0 F=0

Ii=0 mi=0 i=34

II

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3150

II

I3ne0 m3ne0 F=0

mi=0 Ii= i=24

III

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3250

T2III 4 (-)m4aG4

III

I4ne0 m4ne0 F=0

Ii=0 mi=0 i=23

IV

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3350

T2IV

F4

IV

Fne0

Ii=0 mi=0 i=234

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3450

2 2 I 2 II 2 III 2 IVT T T T T= + + +

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3550

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150983145983150 983156983144983141 983142983145983143983157983154983141983086 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983154983141 983155983144983151983159983150 983137983155 983151983142983155983141983156983156983141983140 983155983151 983137983155 983156983151 983143983141983150983141983154983137983156983141 983156983144983141

983140983161983150983137983149983145983139 983156983151983154983153983157983141 983151983142 983080983085983081983113α

983086 983108983154983137983159 983156983144983141 983142983154983141983141 983138983151983140983161 983140983145983137983143983154983137983149983155 983151983142 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141983149983141983139983144983137983150983145983155983149 983138983161 983137983152983152983148983161983145983150983143 983155983157983152983141983154983152983151983155983145983156983145983151983150 983152983154983145983150983139983145983152983148983141983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4050

983109 983148 983108 983156 983145 983156983144 983140 983145 983145 983143 983156 983124 983145 983140 983142 983156983144 983144 983145

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4150

983109983160983137983149983152983148983141 983108983141983156983141983154983149983145983150983141 983156983144983141 983140983154983145983158983145983150983143 983156983151983154983153983157983141 983124983090 983154983141983153983157983145983154983141983140 983142983151983154 983156983144983141 983149983141983139983144983137983150983145983155983149

983155983144983151983159983150 983145983150 983142983145983143983157983154983141 983145983150 983151983154983140983141983154 983156983151 983149983137983145983150983156983137983145983150 983156983144983141 983143983145983158983141983150 983149983151983156983145983151983150983086 983117983141983149983138983141983154 983090 983145983155

983138983137983148983137983150983139983141983140983086

2 3

2 4

23

3

O A 100 mm m 068 kg

O AB 90 m 10 kg

AB 400 mm I 00285 kgm

AG 100 mm

= =

= =

= =

=

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4250

2 2 2G3

G3

2B 1

3 G3

4 B

a 23927 14628 2804m s

14628tan 31

23927

a 2804 (211)

ˆa 2355u m s

m a (154)(2804) 4318 N

m a (132)(2355) 3109 N

= + =

α = α =

= micro

= minus

= =

= =

3 3

3

I (0012)(7670) 92 Nm

92

d 0021m4318

α = =

= =

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4350

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4450

983109983160983137983149983152983148983141

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4550

983109983160983137983149983152983148983141

983108983141983156983141983154983149983145983150983141 983156983144983141

983140983154983145983158983145983150983143 983156983151983154983153983157983141983124983090 983154983141983153983157983145983154983141983140 983142983151983154

983156983144983141 983152983157983149983152

983149983141983139983144983137983150983145983155983149983155983144983151983159983150 983145983150983142983145983143983157983154983141 983145983150 983151983154983140983141983154983156983151 983149983137983145983150983156983137983145983150

983156983144983141 983143983145983158983141983150983149983151983156983145983151983150983086983117983141983149983138983141983154 983090 983145983155983138983137983148983137983150983139983141983140983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 5050

Page 28: Theory of Machines Dynamic Analysis

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2850

Example

E l

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2950

Example

I

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3050

(-)m2a

G2

T2I

2

I

I2ne0 m2ne0 F=0

Ii=0 mi=0 i=34

II

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3150

II

I3ne0 m3ne0 F=0

mi=0 Ii= i=24

III

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3250

T2III 4 (-)m4aG4

III

I4ne0 m4ne0 F=0

Ii=0 mi=0 i=23

IV

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3350

T2IV

F4

IV

Fne0

Ii=0 mi=0 i=234

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3450

2 2 I 2 II 2 III 2 IVT T T T T= + + +

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3550

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150983145983150 983156983144983141 983142983145983143983157983154983141983086 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983154983141 983155983144983151983159983150 983137983155 983151983142983155983141983156983156983141983140 983155983151 983137983155 983156983151 983143983141983150983141983154983137983156983141 983156983144983141

983140983161983150983137983149983145983139 983156983151983154983153983157983141 983151983142 983080983085983081983113α

983086 983108983154983137983159 983156983144983141 983142983154983141983141 983138983151983140983161 983140983145983137983143983154983137983149983155 983151983142 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141983149983141983139983144983137983150983145983155983149 983138983161 983137983152983152983148983161983145983150983143 983155983157983152983141983154983152983151983155983145983156983145983151983150 983152983154983145983150983139983145983152983148983141983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4050

983109 983148 983108 983156 983145 983156983144 983140 983145 983145 983143 983156 983124 983145 983140 983142 983156983144 983144 983145

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4150

983109983160983137983149983152983148983141 983108983141983156983141983154983149983145983150983141 983156983144983141 983140983154983145983158983145983150983143 983156983151983154983153983157983141 983124983090 983154983141983153983157983145983154983141983140 983142983151983154 983156983144983141 983149983141983139983144983137983150983145983155983149

983155983144983151983159983150 983145983150 983142983145983143983157983154983141 983145983150 983151983154983140983141983154 983156983151 983149983137983145983150983156983137983145983150 983156983144983141 983143983145983158983141983150 983149983151983156983145983151983150983086 983117983141983149983138983141983154 983090 983145983155

983138983137983148983137983150983139983141983140983086

2 3

2 4

23

3

O A 100 mm m 068 kg

O AB 90 m 10 kg

AB 400 mm I 00285 kgm

AG 100 mm

= =

= =

= =

=

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4250

2 2 2G3

G3

2B 1

3 G3

4 B

a 23927 14628 2804m s

14628tan 31

23927

a 2804 (211)

ˆa 2355u m s

m a (154)(2804) 4318 N

m a (132)(2355) 3109 N

= + =

α = α =

= micro

= minus

= =

= =

3 3

3

I (0012)(7670) 92 Nm

92

d 0021m4318

α = =

= =

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4350

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4450

983109983160983137983149983152983148983141

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4550

983109983160983137983149983152983148983141

983108983141983156983141983154983149983145983150983141 983156983144983141

983140983154983145983158983145983150983143 983156983151983154983153983157983141983124983090 983154983141983153983157983145983154983141983140 983142983151983154

983156983144983141 983152983157983149983152

983149983141983139983144983137983150983145983155983149983155983144983151983159983150 983145983150983142983145983143983157983154983141 983145983150 983151983154983140983141983154983156983151 983149983137983145983150983156983137983145983150

983156983144983141 983143983145983158983141983150983149983151983156983145983151983150983086983117983141983149983138983141983154 983090 983145983155983138983137983148983137983150983139983141983140983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 5050

Page 29: Theory of Machines Dynamic Analysis

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 2950

Example

I

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3050

(-)m2a

G2

T2I

2

I

I2ne0 m2ne0 F=0

Ii=0 mi=0 i=34

II

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3150

II

I3ne0 m3ne0 F=0

mi=0 Ii= i=24

III

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3250

T2III 4 (-)m4aG4

III

I4ne0 m4ne0 F=0

Ii=0 mi=0 i=23

IV

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3350

T2IV

F4

IV

Fne0

Ii=0 mi=0 i=234

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3450

2 2 I 2 II 2 III 2 IVT T T T T= + + +

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3550

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150983145983150 983156983144983141 983142983145983143983157983154983141983086 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983154983141 983155983144983151983159983150 983137983155 983151983142983155983141983156983156983141983140 983155983151 983137983155 983156983151 983143983141983150983141983154983137983156983141 983156983144983141

983140983161983150983137983149983145983139 983156983151983154983153983157983141 983151983142 983080983085983081983113α

983086 983108983154983137983159 983156983144983141 983142983154983141983141 983138983151983140983161 983140983145983137983143983154983137983149983155 983151983142 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141983149983141983139983144983137983150983145983155983149 983138983161 983137983152983152983148983161983145983150983143 983155983157983152983141983154983152983151983155983145983156983145983151983150 983152983154983145983150983139983145983152983148983141983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4050

983109 983148 983108 983156 983145 983156983144 983140 983145 983145 983143 983156 983124 983145 983140 983142 983156983144 983144 983145

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4150

983109983160983137983149983152983148983141 983108983141983156983141983154983149983145983150983141 983156983144983141 983140983154983145983158983145983150983143 983156983151983154983153983157983141 983124983090 983154983141983153983157983145983154983141983140 983142983151983154 983156983144983141 983149983141983139983144983137983150983145983155983149

983155983144983151983159983150 983145983150 983142983145983143983157983154983141 983145983150 983151983154983140983141983154 983156983151 983149983137983145983150983156983137983145983150 983156983144983141 983143983145983158983141983150 983149983151983156983145983151983150983086 983117983141983149983138983141983154 983090 983145983155

983138983137983148983137983150983139983141983140983086

2 3

2 4

23

3

O A 100 mm m 068 kg

O AB 90 m 10 kg

AB 400 mm I 00285 kgm

AG 100 mm

= =

= =

= =

=

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4250

2 2 2G3

G3

2B 1

3 G3

4 B

a 23927 14628 2804m s

14628tan 31

23927

a 2804 (211)

ˆa 2355u m s

m a (154)(2804) 4318 N

m a (132)(2355) 3109 N

= + =

α = α =

= micro

= minus

= =

= =

3 3

3

I (0012)(7670) 92 Nm

92

d 0021m4318

α = =

= =

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4350

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4450

983109983160983137983149983152983148983141

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4550

983109983160983137983149983152983148983141

983108983141983156983141983154983149983145983150983141 983156983144983141

983140983154983145983158983145983150983143 983156983151983154983153983157983141983124983090 983154983141983153983157983145983154983141983140 983142983151983154

983156983144983141 983152983157983149983152

983149983141983139983144983137983150983145983155983149983155983144983151983159983150 983145983150983142983145983143983157983154983141 983145983150 983151983154983140983141983154983156983151 983149983137983145983150983156983137983145983150

983156983144983141 983143983145983158983141983150983149983151983156983145983151983150983086983117983141983149983138983141983154 983090 983145983155983138983137983148983137983150983139983141983140983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 5050

Page 30: Theory of Machines Dynamic Analysis

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3050

(-)m2a

G2

T2I

2

I

I2ne0 m2ne0 F=0

Ii=0 mi=0 i=34

II

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3150

II

I3ne0 m3ne0 F=0

mi=0 Ii= i=24

III

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3250

T2III 4 (-)m4aG4

III

I4ne0 m4ne0 F=0

Ii=0 mi=0 i=23

IV

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3350

T2IV

F4

IV

Fne0

Ii=0 mi=0 i=234

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3450

2 2 I 2 II 2 III 2 IVT T T T T= + + +

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3550

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150983145983150 983156983144983141 983142983145983143983157983154983141983086 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983154983141 983155983144983151983159983150 983137983155 983151983142983155983141983156983156983141983140 983155983151 983137983155 983156983151 983143983141983150983141983154983137983156983141 983156983144983141

983140983161983150983137983149983145983139 983156983151983154983153983157983141 983151983142 983080983085983081983113α

983086 983108983154983137983159 983156983144983141 983142983154983141983141 983138983151983140983161 983140983145983137983143983154983137983149983155 983151983142 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141983149983141983139983144983137983150983145983155983149 983138983161 983137983152983152983148983161983145983150983143 983155983157983152983141983154983152983151983155983145983156983145983151983150 983152983154983145983150983139983145983152983148983141983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4050

983109 983148 983108 983156 983145 983156983144 983140 983145 983145 983143 983156 983124 983145 983140 983142 983156983144 983144 983145

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4150

983109983160983137983149983152983148983141 983108983141983156983141983154983149983145983150983141 983156983144983141 983140983154983145983158983145983150983143 983156983151983154983153983157983141 983124983090 983154983141983153983157983145983154983141983140 983142983151983154 983156983144983141 983149983141983139983144983137983150983145983155983149

983155983144983151983159983150 983145983150 983142983145983143983157983154983141 983145983150 983151983154983140983141983154 983156983151 983149983137983145983150983156983137983145983150 983156983144983141 983143983145983158983141983150 983149983151983156983145983151983150983086 983117983141983149983138983141983154 983090 983145983155

983138983137983148983137983150983139983141983140983086

2 3

2 4

23

3

O A 100 mm m 068 kg

O AB 90 m 10 kg

AB 400 mm I 00285 kgm

AG 100 mm

= =

= =

= =

=

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4250

2 2 2G3

G3

2B 1

3 G3

4 B

a 23927 14628 2804m s

14628tan 31

23927

a 2804 (211)

ˆa 2355u m s

m a (154)(2804) 4318 N

m a (132)(2355) 3109 N

= + =

α = α =

= micro

= minus

= =

= =

3 3

3

I (0012)(7670) 92 Nm

92

d 0021m4318

α = =

= =

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4350

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4450

983109983160983137983149983152983148983141

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4550

983109983160983137983149983152983148983141

983108983141983156983141983154983149983145983150983141 983156983144983141

983140983154983145983158983145983150983143 983156983151983154983153983157983141983124983090 983154983141983153983157983145983154983141983140 983142983151983154

983156983144983141 983152983157983149983152

983149983141983139983144983137983150983145983155983149983155983144983151983159983150 983145983150983142983145983143983157983154983141 983145983150 983151983154983140983141983154983156983151 983149983137983145983150983156983137983145983150

983156983144983141 983143983145983158983141983150983149983151983156983145983151983150983086983117983141983149983138983141983154 983090 983145983155983138983137983148983137983150983139983141983140983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 5050

Page 31: Theory of Machines Dynamic Analysis

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3150

II

I3ne0 m3ne0 F=0

mi=0 Ii= i=24

III

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3250

T2III 4 (-)m4aG4

III

I4ne0 m4ne0 F=0

Ii=0 mi=0 i=23

IV

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3350

T2IV

F4

IV

Fne0

Ii=0 mi=0 i=234

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3450

2 2 I 2 II 2 III 2 IVT T T T T= + + +

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3550

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150983145983150 983156983144983141 983142983145983143983157983154983141983086 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983154983141 983155983144983151983159983150 983137983155 983151983142983155983141983156983156983141983140 983155983151 983137983155 983156983151 983143983141983150983141983154983137983156983141 983156983144983141

983140983161983150983137983149983145983139 983156983151983154983153983157983141 983151983142 983080983085983081983113α

983086 983108983154983137983159 983156983144983141 983142983154983141983141 983138983151983140983161 983140983145983137983143983154983137983149983155 983151983142 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141983149983141983139983144983137983150983145983155983149 983138983161 983137983152983152983148983161983145983150983143 983155983157983152983141983154983152983151983155983145983156983145983151983150 983152983154983145983150983139983145983152983148983141983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4050

983109 983148 983108 983156 983145 983156983144 983140 983145 983145 983143 983156 983124 983145 983140 983142 983156983144 983144 983145

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4150

983109983160983137983149983152983148983141 983108983141983156983141983154983149983145983150983141 983156983144983141 983140983154983145983158983145983150983143 983156983151983154983153983157983141 983124983090 983154983141983153983157983145983154983141983140 983142983151983154 983156983144983141 983149983141983139983144983137983150983145983155983149

983155983144983151983159983150 983145983150 983142983145983143983157983154983141 983145983150 983151983154983140983141983154 983156983151 983149983137983145983150983156983137983145983150 983156983144983141 983143983145983158983141983150 983149983151983156983145983151983150983086 983117983141983149983138983141983154 983090 983145983155

983138983137983148983137983150983139983141983140983086

2 3

2 4

23

3

O A 100 mm m 068 kg

O AB 90 m 10 kg

AB 400 mm I 00285 kgm

AG 100 mm

= =

= =

= =

=

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4250

2 2 2G3

G3

2B 1

3 G3

4 B

a 23927 14628 2804m s

14628tan 31

23927

a 2804 (211)

ˆa 2355u m s

m a (154)(2804) 4318 N

m a (132)(2355) 3109 N

= + =

α = α =

= micro

= minus

= =

= =

3 3

3

I (0012)(7670) 92 Nm

92

d 0021m4318

α = =

= =

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4350

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4450

983109983160983137983149983152983148983141

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4550

983109983160983137983149983152983148983141

983108983141983156983141983154983149983145983150983141 983156983144983141

983140983154983145983158983145983150983143 983156983151983154983153983157983141983124983090 983154983141983153983157983145983154983141983140 983142983151983154

983156983144983141 983152983157983149983152

983149983141983139983144983137983150983145983155983149983155983144983151983159983150 983145983150983142983145983143983157983154983141 983145983150 983151983154983140983141983154983156983151 983149983137983145983150983156983137983145983150

983156983144983141 983143983145983158983141983150983149983151983156983145983151983150983086983117983141983149983138983141983154 983090 983145983155983138983137983148983137983150983139983141983140983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 5050

Page 32: Theory of Machines Dynamic Analysis

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3250

T2III 4 (-)m4aG4

III

I4ne0 m4ne0 F=0

Ii=0 mi=0 i=23

IV

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3350

T2IV

F4

IV

Fne0

Ii=0 mi=0 i=234

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3450

2 2 I 2 II 2 III 2 IVT T T T T= + + +

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3550

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150983145983150 983156983144983141 983142983145983143983157983154983141983086 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983154983141 983155983144983151983159983150 983137983155 983151983142983155983141983156983156983141983140 983155983151 983137983155 983156983151 983143983141983150983141983154983137983156983141 983156983144983141

983140983161983150983137983149983145983139 983156983151983154983153983157983141 983151983142 983080983085983081983113α

983086 983108983154983137983159 983156983144983141 983142983154983141983141 983138983151983140983161 983140983145983137983143983154983137983149983155 983151983142 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141983149983141983139983144983137983150983145983155983149 983138983161 983137983152983152983148983161983145983150983143 983155983157983152983141983154983152983151983155983145983156983145983151983150 983152983154983145983150983139983145983152983148983141983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4050

983109 983148 983108 983156 983145 983156983144 983140 983145 983145 983143 983156 983124 983145 983140 983142 983156983144 983144 983145

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4150

983109983160983137983149983152983148983141 983108983141983156983141983154983149983145983150983141 983156983144983141 983140983154983145983158983145983150983143 983156983151983154983153983157983141 983124983090 983154983141983153983157983145983154983141983140 983142983151983154 983156983144983141 983149983141983139983144983137983150983145983155983149

983155983144983151983159983150 983145983150 983142983145983143983157983154983141 983145983150 983151983154983140983141983154 983156983151 983149983137983145983150983156983137983145983150 983156983144983141 983143983145983158983141983150 983149983151983156983145983151983150983086 983117983141983149983138983141983154 983090 983145983155

983138983137983148983137983150983139983141983140983086

2 3

2 4

23

3

O A 100 mm m 068 kg

O AB 90 m 10 kg

AB 400 mm I 00285 kgm

AG 100 mm

= =

= =

= =

=

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4250

2 2 2G3

G3

2B 1

3 G3

4 B

a 23927 14628 2804m s

14628tan 31

23927

a 2804 (211)

ˆa 2355u m s

m a (154)(2804) 4318 N

m a (132)(2355) 3109 N

= + =

α = α =

= micro

= minus

= =

= =

3 3

3

I (0012)(7670) 92 Nm

92

d 0021m4318

α = =

= =

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4350

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4450

983109983160983137983149983152983148983141

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4550

983109983160983137983149983152983148983141

983108983141983156983141983154983149983145983150983141 983156983144983141

983140983154983145983158983145983150983143 983156983151983154983153983157983141983124983090 983154983141983153983157983145983154983141983140 983142983151983154

983156983144983141 983152983157983149983152

983149983141983139983144983137983150983145983155983149983155983144983151983159983150 983145983150983142983145983143983157983154983141 983145983150 983151983154983140983141983154983156983151 983149983137983145983150983156983137983145983150

983156983144983141 983143983145983158983141983150983149983151983156983145983151983150983086983117983141983149983138983141983154 983090 983145983155983138983137983148983137983150983139983141983140983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 5050

Page 33: Theory of Machines Dynamic Analysis

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3350

T2IV

F4

IV

Fne0

Ii=0 mi=0 i=234

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3450

2 2 I 2 II 2 III 2 IVT T T T T= + + +

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3550

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150983145983150 983156983144983141 983142983145983143983157983154983141983086 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983154983141 983155983144983151983159983150 983137983155 983151983142983155983141983156983156983141983140 983155983151 983137983155 983156983151 983143983141983150983141983154983137983156983141 983156983144983141

983140983161983150983137983149983145983139 983156983151983154983153983157983141 983151983142 983080983085983081983113α

983086 983108983154983137983159 983156983144983141 983142983154983141983141 983138983151983140983161 983140983145983137983143983154983137983149983155 983151983142 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141983149983141983139983144983137983150983145983155983149 983138983161 983137983152983152983148983161983145983150983143 983155983157983152983141983154983152983151983155983145983156983145983151983150 983152983154983145983150983139983145983152983148983141983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4050

983109 983148 983108 983156 983145 983156983144 983140 983145 983145 983143 983156 983124 983145 983140 983142 983156983144 983144 983145

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4150

983109983160983137983149983152983148983141 983108983141983156983141983154983149983145983150983141 983156983144983141 983140983154983145983158983145983150983143 983156983151983154983153983157983141 983124983090 983154983141983153983157983145983154983141983140 983142983151983154 983156983144983141 983149983141983139983144983137983150983145983155983149

983155983144983151983159983150 983145983150 983142983145983143983157983154983141 983145983150 983151983154983140983141983154 983156983151 983149983137983145983150983156983137983145983150 983156983144983141 983143983145983158983141983150 983149983151983156983145983151983150983086 983117983141983149983138983141983154 983090 983145983155

983138983137983148983137983150983139983141983140983086

2 3

2 4

23

3

O A 100 mm m 068 kg

O AB 90 m 10 kg

AB 400 mm I 00285 kgm

AG 100 mm

= =

= =

= =

=

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4250

2 2 2G3

G3

2B 1

3 G3

4 B

a 23927 14628 2804m s

14628tan 31

23927

a 2804 (211)

ˆa 2355u m s

m a (154)(2804) 4318 N

m a (132)(2355) 3109 N

= + =

α = α =

= micro

= minus

= =

= =

3 3

3

I (0012)(7670) 92 Nm

92

d 0021m4318

α = =

= =

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4350

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4450

983109983160983137983149983152983148983141

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4550

983109983160983137983149983152983148983141

983108983141983156983141983154983149983145983150983141 983156983144983141

983140983154983145983158983145983150983143 983156983151983154983153983157983141983124983090 983154983141983153983157983145983154983141983140 983142983151983154

983156983144983141 983152983157983149983152

983149983141983139983144983137983150983145983155983149983155983144983151983159983150 983145983150983142983145983143983157983154983141 983145983150 983151983154983140983141983154983156983151 983149983137983145983150983156983137983145983150

983156983144983141 983143983145983158983141983150983149983151983156983145983151983150983086983117983141983149983138983141983154 983090 983145983155983138983137983148983137983150983139983141983140983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 5050

Page 34: Theory of Machines Dynamic Analysis

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3450

2 2 I 2 II 2 III 2 IVT T T T T= + + +

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3550

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150983145983150 983156983144983141 983142983145983143983157983154983141983086 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983154983141 983155983144983151983159983150 983137983155 983151983142983155983141983156983156983141983140 983155983151 983137983155 983156983151 983143983141983150983141983154983137983156983141 983156983144983141

983140983161983150983137983149983145983139 983156983151983154983153983157983141 983151983142 983080983085983081983113α

983086 983108983154983137983159 983156983144983141 983142983154983141983141 983138983151983140983161 983140983145983137983143983154983137983149983155 983151983142 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141983149983141983139983144983137983150983145983155983149 983138983161 983137983152983152983148983161983145983150983143 983155983157983152983141983154983152983151983155983145983156983145983151983150 983152983154983145983150983139983145983152983148983141983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4050

983109 983148 983108 983156 983145 983156983144 983140 983145 983145 983143 983156 983124 983145 983140 983142 983156983144 983144 983145

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4150

983109983160983137983149983152983148983141 983108983141983156983141983154983149983145983150983141 983156983144983141 983140983154983145983158983145983150983143 983156983151983154983153983157983141 983124983090 983154983141983153983157983145983154983141983140 983142983151983154 983156983144983141 983149983141983139983144983137983150983145983155983149

983155983144983151983159983150 983145983150 983142983145983143983157983154983141 983145983150 983151983154983140983141983154 983156983151 983149983137983145983150983156983137983145983150 983156983144983141 983143983145983158983141983150 983149983151983156983145983151983150983086 983117983141983149983138983141983154 983090 983145983155

983138983137983148983137983150983139983141983140983086

2 3

2 4

23

3

O A 100 mm m 068 kg

O AB 90 m 10 kg

AB 400 mm I 00285 kgm

AG 100 mm

= =

= =

= =

=

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4250

2 2 2G3

G3

2B 1

3 G3

4 B

a 23927 14628 2804m s

14628tan 31

23927

a 2804 (211)

ˆa 2355u m s

m a (154)(2804) 4318 N

m a (132)(2355) 3109 N

= + =

α = α =

= micro

= minus

= =

= =

3 3

3

I (0012)(7670) 92 Nm

92

d 0021m4318

α = =

= =

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4350

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4450

983109983160983137983149983152983148983141

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4550

983109983160983137983149983152983148983141

983108983141983156983141983154983149983145983150983141 983156983144983141

983140983154983145983158983145983150983143 983156983151983154983153983157983141983124983090 983154983141983153983157983145983154983141983140 983142983151983154

983156983144983141 983152983157983149983152

983149983141983139983144983137983150983145983155983149983155983144983151983159983150 983145983150983142983145983143983157983154983141 983145983150 983151983154983140983141983154983156983151 983149983137983145983150983156983137983145983150

983156983144983141 983143983145983158983141983150983149983151983156983145983151983150983086983117983141983149983138983141983154 983090 983145983155983138983137983148983137983150983139983141983140983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 5050

Page 35: Theory of Machines Dynamic Analysis

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3550

983109983160983137983149983152983148983141 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983139983156983145983150983143 983151983150 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141 983149983141983139983144983137983150983145983155983149 983137983154983141 983155983144983151983159983150983145983150 983156983144983141 983142983145983143983157983154983141983086 983108983161983150983137983149983145983139 983142983151983154983139983141983155 983137983154983141 983155983144983151983159983150 983137983155 983151983142983155983141983156983156983141983140 983155983151 983137983155 983156983151 983143983141983150983141983154983137983156983141 983156983144983141

983140983161983150983137983149983145983139 983156983151983154983153983157983141 983151983142 983080983085983081983113α

983086 983108983154983137983159 983156983144983141 983142983154983141983141 983138983151983140983161 983140983145983137983143983154983137983149983155 983151983142 983156983144983141 983149983141983149983138983141983154983155 983151983142 983156983144983141983149983141983139983144983137983150983145983155983149 983138983161 983137983152983152983148983161983145983150983143 983155983157983152983141983154983152983151983155983145983156983145983151983150 983152983154983145983150983139983145983152983148983141983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4050

983109 983148 983108 983156 983145 983156983144 983140 983145 983145 983143 983156 983124 983145 983140 983142 983156983144 983144 983145

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4150

983109983160983137983149983152983148983141 983108983141983156983141983154983149983145983150983141 983156983144983141 983140983154983145983158983145983150983143 983156983151983154983153983157983141 983124983090 983154983141983153983157983145983154983141983140 983142983151983154 983156983144983141 983149983141983139983144983137983150983145983155983149

983155983144983151983159983150 983145983150 983142983145983143983157983154983141 983145983150 983151983154983140983141983154 983156983151 983149983137983145983150983156983137983145983150 983156983144983141 983143983145983158983141983150 983149983151983156983145983151983150983086 983117983141983149983138983141983154 983090 983145983155

983138983137983148983137983150983139983141983140983086

2 3

2 4

23

3

O A 100 mm m 068 kg

O AB 90 m 10 kg

AB 400 mm I 00285 kgm

AG 100 mm

= =

= =

= =

=

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4250

2 2 2G3

G3

2B 1

3 G3

4 B

a 23927 14628 2804m s

14628tan 31

23927

a 2804 (211)

ˆa 2355u m s

m a (154)(2804) 4318 N

m a (132)(2355) 3109 N

= + =

α = α =

= micro

= minus

= =

= =

3 3

3

I (0012)(7670) 92 Nm

92

d 0021m4318

α = =

= =

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4350

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4450

983109983160983137983149983152983148983141

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4550

983109983160983137983149983152983148983141

983108983141983156983141983154983149983145983150983141 983156983144983141

983140983154983145983158983145983150983143 983156983151983154983153983157983141983124983090 983154983141983153983157983145983154983141983140 983142983151983154

983156983144983141 983152983157983149983152

983149983141983139983144983137983150983145983155983149983155983144983151983159983150 983145983150983142983145983143983157983154983141 983145983150 983151983154983140983141983154983156983151 983149983137983145983150983156983137983145983150

983156983144983141 983143983145983158983141983150983149983151983156983145983151983150983086983117983141983149983138983141983154 983090 983145983155983138983137983148983137983150983139983141983140983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 5050

Page 36: Theory of Machines Dynamic Analysis

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4050

983109 983148 983108 983156 983145 983156983144 983140 983145 983145 983143 983156 983124 983145 983140 983142 983156983144 983144 983145

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4150

983109983160983137983149983152983148983141 983108983141983156983141983154983149983145983150983141 983156983144983141 983140983154983145983158983145983150983143 983156983151983154983153983157983141 983124983090 983154983141983153983157983145983154983141983140 983142983151983154 983156983144983141 983149983141983139983144983137983150983145983155983149

983155983144983151983159983150 983145983150 983142983145983143983157983154983141 983145983150 983151983154983140983141983154 983156983151 983149983137983145983150983156983137983145983150 983156983144983141 983143983145983158983141983150 983149983151983156983145983151983150983086 983117983141983149983138983141983154 983090 983145983155

983138983137983148983137983150983139983141983140983086

2 3

2 4

23

3

O A 100 mm m 068 kg

O AB 90 m 10 kg

AB 400 mm I 00285 kgm

AG 100 mm

= =

= =

= =

=

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4250

2 2 2G3

G3

2B 1

3 G3

4 B

a 23927 14628 2804m s

14628tan 31

23927

a 2804 (211)

ˆa 2355u m s

m a (154)(2804) 4318 N

m a (132)(2355) 3109 N

= + =

α = α =

= micro

= minus

= =

= =

3 3

3

I (0012)(7670) 92 Nm

92

d 0021m4318

α = =

= =

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4350

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4450

983109983160983137983149983152983148983141

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4550

983109983160983137983149983152983148983141

983108983141983156983141983154983149983145983150983141 983156983144983141

983140983154983145983158983145983150983143 983156983151983154983153983157983141983124983090 983154983141983153983157983145983154983141983140 983142983151983154

983156983144983141 983152983157983149983152

983149983141983139983144983137983150983145983155983149983155983144983151983159983150 983145983150983142983145983143983157983154983141 983145983150 983151983154983140983141983154983156983151 983149983137983145983150983156983137983145983150

983156983144983141 983143983145983158983141983150983149983151983156983145983151983150983086983117983141983149983138983141983154 983090 983145983155983138983137983148983137983150983139983141983140983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 5050

Page 37: Theory of Machines Dynamic Analysis

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4050

983109 983148 983108 983156 983145 983156983144 983140 983145 983145 983143 983156 983124 983145 983140 983142 983156983144 983144 983145

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4150

983109983160983137983149983152983148983141 983108983141983156983141983154983149983145983150983141 983156983144983141 983140983154983145983158983145983150983143 983156983151983154983153983157983141 983124983090 983154983141983153983157983145983154983141983140 983142983151983154 983156983144983141 983149983141983139983144983137983150983145983155983149

983155983144983151983159983150 983145983150 983142983145983143983157983154983141 983145983150 983151983154983140983141983154 983156983151 983149983137983145983150983156983137983145983150 983156983144983141 983143983145983158983141983150 983149983151983156983145983151983150983086 983117983141983149983138983141983154 983090 983145983155

983138983137983148983137983150983139983141983140983086

2 3

2 4

23

3

O A 100 mm m 068 kg

O AB 90 m 10 kg

AB 400 mm I 00285 kgm

AG 100 mm

= =

= =

= =

=

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4250

2 2 2G3

G3

2B 1

3 G3

4 B

a 23927 14628 2804m s

14628tan 31

23927

a 2804 (211)

ˆa 2355u m s

m a (154)(2804) 4318 N

m a (132)(2355) 3109 N

= + =

α = α =

= micro

= minus

= =

= =

3 3

3

I (0012)(7670) 92 Nm

92

d 0021m4318

α = =

= =

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4350

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4450

983109983160983137983149983152983148983141

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4550

983109983160983137983149983152983148983141

983108983141983156983141983154983149983145983150983141 983156983144983141

983140983154983145983158983145983150983143 983156983151983154983153983157983141983124983090 983154983141983153983157983145983154983141983140 983142983151983154

983156983144983141 983152983157983149983152

983149983141983139983144983137983150983145983155983149983155983144983151983159983150 983145983150983142983145983143983157983154983141 983145983150 983151983154983140983141983154983156983151 983149983137983145983150983156983137983145983150

983156983144983141 983143983145983158983141983150983149983151983156983145983151983150983086983117983141983149983138983141983154 983090 983145983155983138983137983148983137983150983139983141983140983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 5050

Page 38: Theory of Machines Dynamic Analysis

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4050

983109 983148 983108 983156 983145 983156983144 983140 983145 983145 983143 983156 983124 983145 983140 983142 983156983144 983144 983145

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4150

983109983160983137983149983152983148983141 983108983141983156983141983154983149983145983150983141 983156983144983141 983140983154983145983158983145983150983143 983156983151983154983153983157983141 983124983090 983154983141983153983157983145983154983141983140 983142983151983154 983156983144983141 983149983141983139983144983137983150983145983155983149

983155983144983151983159983150 983145983150 983142983145983143983157983154983141 983145983150 983151983154983140983141983154 983156983151 983149983137983145983150983156983137983145983150 983156983144983141 983143983145983158983141983150 983149983151983156983145983151983150983086 983117983141983149983138983141983154 983090 983145983155

983138983137983148983137983150983139983141983140983086

2 3

2 4

23

3

O A 100 mm m 068 kg

O AB 90 m 10 kg

AB 400 mm I 00285 kgm

AG 100 mm

= =

= =

= =

=

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4250

2 2 2G3

G3

2B 1

3 G3

4 B

a 23927 14628 2804m s

14628tan 31

23927

a 2804 (211)

ˆa 2355u m s

m a (154)(2804) 4318 N

m a (132)(2355) 3109 N

= + =

α = α =

= micro

= minus

= =

= =

3 3

3

I (0012)(7670) 92 Nm

92

d 0021m4318

α = =

= =

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4350

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4450

983109983160983137983149983152983148983141

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4550

983109983160983137983149983152983148983141

983108983141983156983141983154983149983145983150983141 983156983144983141

983140983154983145983158983145983150983143 983156983151983154983153983157983141983124983090 983154983141983153983157983145983154983141983140 983142983151983154

983156983144983141 983152983157983149983152

983149983141983139983144983137983150983145983155983149983155983144983151983159983150 983145983150983142983145983143983157983154983141 983145983150 983151983154983140983141983154983156983151 983149983137983145983150983156983137983145983150

983156983144983141 983143983145983158983141983150983149983151983156983145983151983150983086983117983141983149983138983141983154 983090 983145983155983138983137983148983137983150983139983141983140983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 5050

Page 39: Theory of Machines Dynamic Analysis

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 3950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4050

983109 983148 983108 983156 983145 983156983144 983140 983145 983145 983143 983156 983124 983145 983140 983142 983156983144 983144 983145

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4150

983109983160983137983149983152983148983141 983108983141983156983141983154983149983145983150983141 983156983144983141 983140983154983145983158983145983150983143 983156983151983154983153983157983141 983124983090 983154983141983153983157983145983154983141983140 983142983151983154 983156983144983141 983149983141983139983144983137983150983145983155983149

983155983144983151983159983150 983145983150 983142983145983143983157983154983141 983145983150 983151983154983140983141983154 983156983151 983149983137983145983150983156983137983145983150 983156983144983141 983143983145983158983141983150 983149983151983156983145983151983150983086 983117983141983149983138983141983154 983090 983145983155

983138983137983148983137983150983139983141983140983086

2 3

2 4

23

3

O A 100 mm m 068 kg

O AB 90 m 10 kg

AB 400 mm I 00285 kgm

AG 100 mm

= =

= =

= =

=

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4250

2 2 2G3

G3

2B 1

3 G3

4 B

a 23927 14628 2804m s

14628tan 31

23927

a 2804 (211)

ˆa 2355u m s

m a (154)(2804) 4318 N

m a (132)(2355) 3109 N

= + =

α = α =

= micro

= minus

= =

= =

3 3

3

I (0012)(7670) 92 Nm

92

d 0021m4318

α = =

= =

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4350

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4450

983109983160983137983149983152983148983141

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4550

983109983160983137983149983152983148983141

983108983141983156983141983154983149983145983150983141 983156983144983141

983140983154983145983158983145983150983143 983156983151983154983153983157983141983124983090 983154983141983153983157983145983154983141983140 983142983151983154

983156983144983141 983152983157983149983152

983149983141983139983144983137983150983145983155983149983155983144983151983159983150 983145983150983142983145983143983157983154983141 983145983150 983151983154983140983141983154983156983151 983149983137983145983150983156983137983145983150

983156983144983141 983143983145983158983141983150983149983151983156983145983151983150983086983117983141983149983138983141983154 983090 983145983155983138983137983148983137983150983139983141983140983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 5050

Page 40: Theory of Machines Dynamic Analysis

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4050

983109 983148 983108 983156 983145 983156983144 983140 983145 983145 983143 983156 983124 983145 983140 983142 983156983144 983144 983145

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4150

983109983160983137983149983152983148983141 983108983141983156983141983154983149983145983150983141 983156983144983141 983140983154983145983158983145983150983143 983156983151983154983153983157983141 983124983090 983154983141983153983157983145983154983141983140 983142983151983154 983156983144983141 983149983141983139983144983137983150983145983155983149

983155983144983151983159983150 983145983150 983142983145983143983157983154983141 983145983150 983151983154983140983141983154 983156983151 983149983137983145983150983156983137983145983150 983156983144983141 983143983145983158983141983150 983149983151983156983145983151983150983086 983117983141983149983138983141983154 983090 983145983155

983138983137983148983137983150983139983141983140983086

2 3

2 4

23

3

O A 100 mm m 068 kg

O AB 90 m 10 kg

AB 400 mm I 00285 kgm

AG 100 mm

= =

= =

= =

=

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4250

2 2 2G3

G3

2B 1

3 G3

4 B

a 23927 14628 2804m s

14628tan 31

23927

a 2804 (211)

ˆa 2355u m s

m a (154)(2804) 4318 N

m a (132)(2355) 3109 N

= + =

α = α =

= micro

= minus

= =

= =

3 3

3

I (0012)(7670) 92 Nm

92

d 0021m4318

α = =

= =

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4350

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4450

983109983160983137983149983152983148983141

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4550

983109983160983137983149983152983148983141

983108983141983156983141983154983149983145983150983141 983156983144983141

983140983154983145983158983145983150983143 983156983151983154983153983157983141983124983090 983154983141983153983157983145983154983141983140 983142983151983154

983156983144983141 983152983157983149983152

983149983141983139983144983137983150983145983155983149983155983144983151983159983150 983145983150983142983145983143983157983154983141 983145983150 983151983154983140983141983154983156983151 983149983137983145983150983156983137983145983150

983156983144983141 983143983145983158983141983150983149983151983156983145983151983150983086983117983141983149983138983141983154 983090 983145983155983138983137983148983137983150983139983141983140983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 5050

Page 41: Theory of Machines Dynamic Analysis

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4150

983109983160983137983149983152983148983141 983108983141983156983141983154983149983145983150983141 983156983144983141 983140983154983145983158983145983150983143 983156983151983154983153983157983141 983124983090 983154983141983153983157983145983154983141983140 983142983151983154 983156983144983141 983149983141983139983144983137983150983145983155983149

983155983144983151983159983150 983145983150 983142983145983143983157983154983141 983145983150 983151983154983140983141983154 983156983151 983149983137983145983150983156983137983145983150 983156983144983141 983143983145983158983141983150 983149983151983156983145983151983150983086 983117983141983149983138983141983154 983090 983145983155

983138983137983148983137983150983139983141983140983086

2 3

2 4

23

3

O A 100 mm m 068 kg

O AB 90 m 10 kg

AB 400 mm I 00285 kgm

AG 100 mm

= =

= =

= =

=

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4250

2 2 2G3

G3

2B 1

3 G3

4 B

a 23927 14628 2804m s

14628tan 31

23927

a 2804 (211)

ˆa 2355u m s

m a (154)(2804) 4318 N

m a (132)(2355) 3109 N

= + =

α = α =

= micro

= minus

= =

= =

3 3

3

I (0012)(7670) 92 Nm

92

d 0021m4318

α = =

= =

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4350

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4450

983109983160983137983149983152983148983141

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4550

983109983160983137983149983152983148983141

983108983141983156983141983154983149983145983150983141 983156983144983141

983140983154983145983158983145983150983143 983156983151983154983153983157983141983124983090 983154983141983153983157983145983154983141983140 983142983151983154

983156983144983141 983152983157983149983152

983149983141983139983144983137983150983145983155983149983155983144983151983159983150 983145983150983142983145983143983157983154983141 983145983150 983151983154983140983141983154983156983151 983149983137983145983150983156983137983145983150

983156983144983141 983143983145983158983141983150983149983151983156983145983151983150983086983117983141983149983138983141983154 983090 983145983155983138983137983148983137983150983139983141983140983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 5050

Page 42: Theory of Machines Dynamic Analysis

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4250

2 2 2G3

G3

2B 1

3 G3

4 B

a 23927 14628 2804m s

14628tan 31

23927

a 2804 (211)

ˆa 2355u m s

m a (154)(2804) 4318 N

m a (132)(2355) 3109 N

= + =

α = α =

= micro

= minus

= =

= =

3 3

3

I (0012)(7670) 92 Nm

92

d 0021m4318

α = =

= =

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4350

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4450

983109983160983137983149983152983148983141

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4550

983109983160983137983149983152983148983141

983108983141983156983141983154983149983145983150983141 983156983144983141

983140983154983145983158983145983150983143 983156983151983154983153983157983141983124983090 983154983141983153983157983145983154983141983140 983142983151983154

983156983144983141 983152983157983149983152

983149983141983139983144983137983150983145983155983149983155983144983151983159983150 983145983150983142983145983143983157983154983141 983145983150 983151983154983140983141983154983156983151 983149983137983145983150983156983137983145983150

983156983144983141 983143983145983158983141983150983149983151983156983145983151983150983086983117983141983149983138983141983154 983090 983145983155983138983137983148983137983150983139983141983140983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 5050

Page 43: Theory of Machines Dynamic Analysis

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4350

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4450

983109983160983137983149983152983148983141

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4550

983109983160983137983149983152983148983141

983108983141983156983141983154983149983145983150983141 983156983144983141

983140983154983145983158983145983150983143 983156983151983154983153983157983141983124983090 983154983141983153983157983145983154983141983140 983142983151983154

983156983144983141 983152983157983149983152

983149983141983139983144983137983150983145983155983149983155983144983151983159983150 983145983150983142983145983143983157983154983141 983145983150 983151983154983140983141983154983156983151 983149983137983145983150983156983137983145983150

983156983144983141 983143983145983158983141983150983149983151983156983145983151983150983086983117983141983149983138983141983154 983090 983145983155983138983137983148983137983150983139983141983140983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 5050

Page 44: Theory of Machines Dynamic Analysis

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4450

983109983160983137983149983152983148983141

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4550

983109983160983137983149983152983148983141

983108983141983156983141983154983149983145983150983141 983156983144983141

983140983154983145983158983145983150983143 983156983151983154983153983157983141983124983090 983154983141983153983157983145983154983141983140 983142983151983154

983156983144983141 983152983157983149983152

983149983141983139983144983137983150983145983155983149983155983144983151983159983150 983145983150983142983145983143983157983154983141 983145983150 983151983154983140983141983154983156983151 983149983137983145983150983156983137983145983150

983156983144983141 983143983145983158983141983150983149983151983156983145983151983150983086983117983141983149983138983141983154 983090 983145983155983138983137983148983137983150983139983141983140983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 5050

Page 45: Theory of Machines Dynamic Analysis

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4550

983109983160983137983149983152983148983141

983108983141983156983141983154983149983145983150983141 983156983144983141

983140983154983145983158983145983150983143 983156983151983154983153983157983141983124983090 983154983141983153983157983145983154983141983140 983142983151983154

983156983144983141 983152983157983149983152

983149983141983139983144983137983150983145983155983149983155983144983151983159983150 983145983150983142983145983143983157983154983141 983145983150 983151983154983140983141983154983156983151 983149983137983145983150983156983137983145983150

983156983144983141 983143983145983158983141983150983149983151983156983145983151983150983086983117983141983149983138983141983154 983090 983145983155983138983137983148983137983150983139983141983140983086

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 5050

Page 46: Theory of Machines Dynamic Analysis

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4650

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 5050

Page 47: Theory of Machines Dynamic Analysis

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4750

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 5050

Page 48: Theory of Machines Dynamic Analysis

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4850

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 5050

Page 49: Theory of Machines Dynamic Analysis

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 4950

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 5050

Page 50: Theory of Machines Dynamic Analysis

8132019 Theory of Machines Dynamic Analysis

httpslidepdfcomreaderfulltheory-of-machines-dynamic-analysis 5050