rectangular cross circular cross -section
TRANSCRIPT
FORMULA SHEET
Rectangular cross-section:
Circular cross-section:
√(
)
STATIC DESIGN :
MSST: {
⇒
⇒
⇒
DET:
√ √( )
( )
( )
(
) (spatial)
√
√
(planar)
DCMT: {
⇒
⇒
⇒
BCMT:
,
MMT:
{
⇒
⇒ {
|
|
⇒
|
|
⇒
( )
⇒
FATIGUE DESIGN :
{
Surface factor : Load factor : {
Temperature factor: Reliability factor:
Size factor : For axial load:
For bending :
{
For rotating solid or hollow shaft, , for nonrotating solid or hollow shaft
, for rectangular cross-section , √
( ) ( )
Goodman :
Gerber :
(
)
ASME Elliptic : (
)
(
)
Yield (Langer) :
Combined Load: √(
) (
)
√(
) (
)
WELDED JOINTS :
TORSION :
,
BENDING :
,
, ,
, forged surface, , Table 9-5.
RIVETED OR BOLTED JOINTS IN SHEAR:
,
∑
,
∑( )
POWER SCREWS:
(
)
(
)
Shear stress in body:
Axial stress in body:
Bearing stress:
Bending stress at thread root:
THREADED FASTENERS IN TENSION JOINTS:
, ,
, ( )
Torque that gives preload :
Static load factor of safety :
, is the load at which , i.e.
Separation factor of safety:
, is the load at which , i.e. ( )
Axial fatigue load: included in value, , , :Table 8-16,
Goodman criterium with preload (
) :
( )
Static load factor of safety :
: Table 8-1, , : Table 8-11.