고체역학 (Beer) — Stress and Strain—Axial Loading: Problem 2.48

2.48 The brass shell ($\alpha_b = 20.9 \times 10^{-6}/^\circ\text{C}$) is fully bonded to the steel core ($\alpha_s = 11.7 \times 10^{-6}/^\circ\text{C}$). Determine the largest allowable increase in temperature if the stress in the steel core is not to exceed 55 MPa.