In: Mechanical Engineering
bending moment of 4 kN m is found to cause elastic failure of a
solid circular shaft. An exactly similar shaft is now subjected to
a torque T. Determine the value of T which will cause failure of
the shaft according to the following theories:
(a) Maximum principal stress;
(b) Maximum principal strain;
(c) Maximum shear strain energy. ?= 0.3.)
Which of these values would you expect to be the most reliable and
why?