For The Plane Stress Element Shown In Figure P15 15

For the plane stress element shown in Figure P15 -15 subjected to a uniform temperature rise of T = 50°F, determine the thermal force matrix {fT}. Let E = 30 × 106 psi, v = 0.3, a = 7.0 × 1026 (in./in.)/°F, and t = 1 in. The coordinates (in inches) are shown in the figure.

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