Midrange component of force: =
Amplitude of alternating component of force: = |
In the presence of a notch key = = , where are the nominal stresses induced
by loads respectively.
Fatigue Failure Criteri
Ch. 8 Screws, Fasteners, and the Design of Nonpermanent Joints
The major diameter d is the largest diameter of a screw thread.
The minor (or root) diameter dr is the smallest diameter of a screw thread.
The pitch diameter dp is a theoretical
WORK DONE BY A CONSTANT FORCE
12 = 2
= ( )
WORK OF A WEIGHT
= (2 1 )
which can also be written as =
NOTE: THE WORK IS NEGATIVE, SINCE W IS DOWNWARD AND is upward.
HOWEVER, IF THE PARTICLE IS DISPLACED DOWNWARD (-) ,TH