Solve Problem 15.6 using a computer program. Problem 15.6 For the plane truss shown i...

Solve Problem 15.6 using a computer program.

Problem 15.6

For the plane truss shown in Figure P15–6, bar element 2 is subjected to a uniform temperature drop of T = 20 ° C. Let E = 70 GPa, A = 4 × 10^–2 m², and α = 23 × 10^–6 (mm/mm)/ ° C. Determine the stresses in each bar and the displacement of node 1.