Question: A bimetallic beam used in a temperature-control switch consists of strips of aluminum and copper bonded together as shown in the figure, which is a

A bimetallic beam used in a temperature-control switch consists of strips of aluminum and copper bonded together as shown in the figure, which is a cross-sectional view. The width of the beam is 1.0 in., and each strip has a thickness of 1/16 in.
Under the action of a bending moment M = 12 lb-in. acting about the z axis, what are the maximum stresses Ïƒa and Ïƒc in the aluminum and copper, respectively? (Assume Ea = 10.5 x 106 psi and Ec = 16.8 x 106 psi.)

in 16 1.0 in in. 16

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