The hollow shaft shown is made of a steel that is assumed to be elastoplastic wi

Question

The hollow shaft shown is made of a steel that is assumed to be elastoplastic with tau y = 145 MPa and G = 77.2 GPa. The magnitude T of the torque couple is slowly increased until the plastic zone reaches the inner surface of the shaft (that is, the entire hollow shaft has reached yield stress); the torque couple is then removed. Determine a) the magnitude and location of the maximum residual shearing stress in the rod and b) the permanent angle of twist of the rod. Note: This problem is worth 20 points-10 for a) and 10 for b).

Explanation / Answer

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