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Problem $05\mathrm{.}074-$ Calculating the maximum external pressure using the distortion energy method

A cold$-$drawn AISI $1015$ steel tube is $600$ mm OD by $500$ mm ID and is to be subjected to an external pressure caused by a shrink fit.

Problem $05\mathrm{.}074.$b $-$ Calculating the maximum external pressure

Determine the maximum pressure $p_o,$ in MPa, that will result in yielding the tube.

The maximum pressure $p_o$ that will result in yielding the tube is

MPa.