고체역학 (Beer) — Stress and Strain—Axial Loading: Problem 2.80

2.80 For the elastomeric bearing in Prob. 2.79 with \(b = 10 \text{ in.}\) and \(a = 1 \text{ in.}\), determine the shearing modulus \(G\) and the shear stress \(\tau\) for a maximum lateral load \(P = 5 \text{ kips}\) and a maximum displacement \(\delta = 0.4 \text{ in.}\) (Reference from Prob 2.79: The bearing has a base with dimensions \(8 \text{ in.}\) by \(b\), and a thickness \(a\).)