고체역학 (Gere) — Axially Loaded Members: Problem 2.5-31

2.5-31 A polyethylene tube (length $L$) has a cap that is held in place by a spring (with undeformed length $L_1 Properties and dimensions: $d_0 = 150\text{ mm}$, $t = 3\text{ mm}$ $L = 305\text{ mm}$, $L_1 = 302\text{ mm}$, $k = 262.5\text{ kN/m}$ Modulus of elasticity: Polyethylene tube ($E_t = 0.7\text{ GPa}$) Coefficients of thermal expansion: $\alpha_t = 140 \times 10^{-6}/^\circ\text{C}$, $\alpha_k = 12 \times 10^{-6}/^\circ\text{C}$