Consider a long thin-wall tube, capped at both ends. It is made from a steel with a yield strength of 40,000 psi. Its length is 60 in., its diameter is 2.0 in., and the wall thickness is 0.015 in. The tube is loaded under an internal pressure P, and a torque of 1500 in.-lbs. is applied.
A. What internal pressure can it withstand without yielding, according to Tresca?
B. What internal pressure can it withstand without yielding, according to von Mises?