고체역학 (Beer) — Torsion: Problem 3.118

3.118 The hollow shaft shown is made of a steel that is assumed to be elastoplastic with \(\tau_Y = 145 \text{ MPa}\) and \(G = 77.2 \text{ GPa}\). The magnitude \(T\) of the torques is slowly increased until the plastic zone first reaches the inner surface of the shaft; the torques are then removed. Determine the magnitude and location of the maximum residual shearing stress in the rod.