Ken YoussefiMechanical Engineering Dept.*Degrees of FreedomAny component that is unconstrained in space has six degrees of freedom. Translation movement along X, Y, and Z axis (three degrees of freedom)Rotation rotate about X, Y, and Z axis (three degrees of freedom)

Mechanical Engineering Dept.

Ken YoussefiMechanical Engineering Dept.*JointsA mechanism is a mechanical portion of a machine that is responsible for transferring motion, force, and torque from an input source to an output source. A mechanism consists of linkages and joints. Links are considered rigid parts. Joints are movable connections between links and allow relative motion between links.

Mechanical Engineering Dept.

Ken YoussefiMechanical Engineering Dept.*JointsThe Sliding joint (prism or piston joint) - one degree of freedomIt allows linear sliding between the two links that it connects (P joint)

Mechanical Engineering Dept.

Ken YoussefiMechanical Engineering Dept.*JointsThe Helical joint (helix or screw joint) - one degree of freedomThe sliding and rotational motions are related by the helix angle of the thread (H joint)

Mechanical Engineering Dept.

Ken YoussefiMechanical Engineering Dept.*JointsThe Cylindrical (cylindric) joint - two degrees of freedomIt permits both angular rotation and an independent sliding motion (C joint)

Mechanical Engineering Dept.

Ken YoussefiMechanical Engineering Dept.*JointsThe Spherical (spheric) - Three degree of freedomIt permits rotational motion about all three axes, a ball-and-socket joint (S joint)

Mechanical Engineering Dept.

Ken YoussefiMechanical Engineering Dept.*JointsThe Planar (flat) - Three degree of freedomIt permits rotational motion about the Z axes axis and sliding motion in x and y axes (F joint), used seldom in design

Mechanical Engineering Dept.

Ken YoussefiMechanical Engineering Dept.*JointsA cam joint allows both rotation and sliding between two links.A gear connection also allows both rotation and sliding as the gear teeth mesh

Mechanical Engineering Dept.

Ken YoussefiMechanical Engineering Dept.*Motion AnalysisIn general, there are two types of motion analysis that should be performed to check the design.Kinematics: deals with the study of motion without regard for the forces that cause the motion. The analysis provides information about the position, velocity and acceleration of all links.Kinetics: deals with the action of forces on the mechanism. It provides information about the forces at the joints and the required input torque.

Mechanical Engineering Dept.

Ken YoussefiMechanical Engineering Dept.*Motion AnalysisThe process of analyzing the motion of a mechanism.Geometric modeling of all parts and creating an assembly model of the mechanism with proper mates.Generate the motion model:Define ground (fixed) componentsDefine moving componentsDefine joints and connectionsSpecify driver(s) componentSpecify loads; external loads, body force (gravitational)Perform motion analysis

Mechanical Engineering Dept.

Ken YoussefiMechanical Engineering Dept.*Motion AnalysisResults visualization (post-processing)Graphs study the position, velocity, and acceleration of any link or any point on a given linkAnimation check the overall motion and interferencePrepare reports graphs and chartsQuery results at specific locations for a given timeAVI and VRML convert the motion to an AVI or export animations to VRML format for distribution on the Internet

Mechanical Engineering Dept.

Ken YoussefiMechanical Engineering Dept.*Motion AnalysisTools Add-Ins and check SolidWorks Motion or COSMOSMotion2009/102008

Mechanical Engineering Dept.

Motion AnalysisKen YoussefiMechanical Engineering Dept.*Motion Analysis combines motion study elements with mates in motion. It also calculates loads that can be used in finite element analysis.Basic Motion option approximates the effects of Motors, Springs, Collision and Gravity on assembly. This is a physics based simulationAnimation option creates simple animations based on point to point motion of parts in assemblies. Motor could also be used.Select Motion Study 1

Mechanical Engineering Dept.

Motion Analysis - ToolbarKen YoussefiMechanical Engineering Dept.*

Mechanical Engineering Dept.

Motion Analysis - ToolbarKen YoussefiMechanical Engineering Dept.*

Mechanical Engineering Dept.

Ken YoussefiMechanical Engineering Dept.*Motion Analysis - Toolbar

Mechanical Engineering Dept.

Ken YoussefiMechanical Engineering Dept.*No Filter, shows all itemsFilter Animated, shows only the moving itemsFilter Driving, shows only the items that cause motionFilter Selected, shows only the selected itemsFilter Results, shows only simulated result itemsMotion Analysis - Toolbar

Mechanical Engineering Dept.

Ken YoussefiMechanical Engineering Dept.*

Mechanical Engineering Dept.

Motor SelectionKen YoussefiMechanical Engineering Dept.*Select Motor type

Mechanical Engineering Dept.

4-Bar in motionKen YoussefiMechanical Engineering Dept.*

Mechanical Engineering Dept.

Results of Motion Analysis 4 StepsKen YoussefiMechanical Engineering Dept.*Select a category

Mechanical Engineering Dept.

Results of Motion AnalysisKen YoussefiMechanical Engineering Dept.*Select a result component

Mechanical Engineering Dept.

Results of Motion AnalysisKen YoussefiMechanical Engineering Dept.*

Mechanical Engineering Dept.

Results of Motion AnalysisKen YoussefiMechanical Engineering Dept.*Plotting the angular velocity of the 9 in. link against the angular displacement of the 2 in. link (input)

Mechanical Engineering Dept.

Force AnalysisKen YoussefiMechanical Engineering Dept.*Force

Mechanical Engineering Dept.

Path AnalysisKen YoussefiMechanical Engineering Dept.*

Mechanical Engineering Dept.

Ken YoussefiMechanical Engineering Dept.*Disable Orientation and Camera Views

Mechanical Engineering Dept.

Motion Analysis Slider Crank Mechanism

Assembled Slider-Crank Mechanism

Animation WizardCreate simple animations automatically: rotate model about any axis, Explode and collapse model

Animation Wizard

Animation Wizard

Ken YoussefiMechanical Engineering Dept.*Fixing or Floating Components in Assemblyf stands for fixed component- stands for moving componentRight click the component to change it from fixed to float

Mechanical Engineering Dept.

Ken YoussefiMechanical Engineering Dept.*2 in link is fixed and 7 in link is the driver

Mechanical Engineering Dept.

Ken YoussefiMechanical Engineering Dept.*Hinge Mate

Mechanical Engineering Dept.

Ken YoussefiMechanical Engineering Dept.*COSMOSMotion Joints, 2007/8 SW

Mechanical Engineering Dept.

Ken YoussefiMechanical Engineering Dept.*COSMOSMotionStraight line mechanismEach rod drawn in a separate file and assembled using various mates. All connections are pin joints (Revolute).

Mechanical Engineering Dept.

Ken YoussefiMechanical Engineering Dept.*Straight line mechanism

Mechanical Engineering Dept.

Ken YoussefiMechanical Engineering Dept.*

Mechanical Engineering Dept.

Ken YoussefiMechanical Engineering Dept.*COSMOSMotion - IntelliMotionAt the top of the FeatureManager, select the Motion tab .

Mechanical Engineering Dept.

Ken YoussefiMechanical Engineering Dept.*COSMOSMotion IntelliMotion (gravity)Specify the magnitude and direction in which gravity acts This means that a vector of 0,-1, 0 defines the direction

Mechanical Engineering Dept.

Ken YoussefiMechanical Engineering Dept.*IntelliMotion Moving and Ground ComponentsDesignate the moving and fixed components

Mechanical Engineering Dept.

Ken YoussefiMechanical Engineering Dept.*IntelliMotion JointsMates specified during assembly will be displayed. You can add or modify joint type.

Mechanical Engineering Dept.

Ken YoussefiMechanical Engineering Dept.*IntelliMotion MotionSelect the driver jointSelect input motion type

Mechanical Engineering Dept.

Ken YoussefiMechanical Engineering Dept.*IntelliMotion SimulationSelect duration and the number of frames.Start the simulation

Mechanical Engineering Dept.

Ken YoussefiMechanical Engineering Dept.*IntelliMotion AnimationCreate and save the animation in the AVI formatCheck for interference

Mechanical Engineering Dept.

Ken YoussefiMechanical Engineering Dept.*Motion analysisPath of any point on the mechanism could be traced

Mechanical Engineering Dept.

Ken YoussefiMechanical Engineering Dept.*Motion analysis - Velocity

Mechanical Engineering Dept.

Ken YoussefiMechanical Engineering Dept.*Motion analysis Position of ComponentsAn angular displacement between any two components could be plotted.

Mechanical Engineering Dept.

Ken YoussefiMechanical Engineering Dept.*Motion analysis Select MotorRotary MotorLinear Motor

Mechanical Engineering Dept.

Ken YoussefiMechanical Engineering Dept.*Motion analysis Apply Forces

Mechanical Engineering Dept.

Ken YoussefiMechanical Engineering Dept.*Motion analysis XY plots

Mechanical Engineering Dept.

Ken YoussefiMechanical Engineering Dept.*Motion analysis NX5Select Motion Simulation module

Mechanical Engineering Dept.

Ken YoussefiMechanical Engineering Dept.*Motion analysis NX5First select the Solution and then the Solve option

Mechanical Engineering Dept.

Ken YoussefiMechanical Engineering Dept.*Motion analysis NX5

Mechanical Engineering Dept.

Ken YoussefiMechanical Engineering Dept.*Motion analysis NX5

Mechanical Engineering Dept.

Ken YoussefiMechanical Engineering Dept.*Potato cutter (french fries)

Mechanical Engineering Dept.

Ken YoussefiMechanical Engineering Dept.*Chrome handleRed sliderPlastic handleSide bar

Mechanical Engineering Dept.

Ken YoussefiMechanical Engineering Dept.*Cutting bladeChrome back platePusherClamp

Mechanical Engineering Dept.

Ken YoussefiMechanical Engineering Dept.*After creating assembly model, select Motion Simulation module from the Start menu

Mechanical Engineering Dept.

Ken YoussefiMechanical Engineering Dept.*Assign a driver, right click on joint j006 and select Edit

Mechanical Engineering Dept.

Ken YoussefiMechanical Engineering Dept.*After assigning the driver, select Solution and then select Solve

Mechanical Engineering Dept.

Ken YoussefiMechanical Engineering Dept.*Select Animation

Mechanical Engineering Dept.

Ken YoussefiMechanical Engineering Dept.*Interference Check

Mechanical Engineering Dept.

Ken YoussefiMechanical Engineering Dept.*Just before interferenceCheck Interference and Pause on Event

Mechanical Engineering Dept.

Ken YoussefiMechanical Engineering Dept.*Motion analysis NX5 (example)

Mechanical Engineering Dept.