A thin-walled cylindrical pressure vessel of 250-mm diameter and 5-mm thickness is subje...

A thin-walled cylindrical pressure vessel of 250-mm diameter and 5-mm thickness is subjected to an internal pressure , a twisting moment of 3136 kN.m and an axial end thrust (tension) p=45 kN. The ultimate strengths in tension and compression are 210 and 500 MPa, respectively. Apply the following theories to evaluate the ability of the tube to resist failure by fracture: (a) Coulomb–Mohr and (b) maximum principal stress.