For the bar structure shown in Figure P15 -7, element 1 is subjected to a uniform temperature rise of T = 30 C. Let E

For the bar structure shown in Figure P15 -7, element 1 is subjected to a uniform temperature rise of T = 30 °C. Let E = 210 GPa, A = 3 × 10-2 m2, and a = 12 × 10-6 (mm/mm)/°C. Determine the displacement of node 1 and the stresses in each bar.

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