The square plate in Figure P15 -23 has element 1 made of steel with E = 30 × 106 psi, v = 0.33, and α = 10 × 10-6 /°F and element 2 made of a material with E = 15 × 106 psi, v = 0.25, and α = 50 × 10-6 /°F. Let the plate thickness be t = 0.1 in. Determine the nodal displacements and element stresses for both elements subjected to an 80 °F temperature increase. Then fix the left and right nodes and repeat the problem. Compare answers.

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4 (2) 1 in. tmm 1 in. 77hm. 3.