Consider two thermally incompatible materials, such as steel and aluminum, attached together as shown in Figure P15 -11. Will there be temperature-induced stress in each material upon uniform heating of both materials to the same temperature when the boundary conditions are simple supports (a pin and a roller such that we have a statically determinate system)? Explain. Let there be a uniform temperature rise of T = 50 °F.

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Steel, E = 30 x 10° psi, a= 6.5 × 10-6/°F Aluminum, E = 10 x 106 psi, 13 x 10-6/°F