solution

A two-member truss is subjected to a load P = 8000 N. Member 1–2 is 400 mm long. Member 1–3 was manufactured to be 505 mm long instead of 500 mm. However, it was forced into place. Determine (a) the stresses in the members assuming that member 1–3 was manufactured to its correct length of 500 mm (b) the stresses in the members as a result of member 1–3 being forced into place (and the load P , of course). ( Hint : Treat this as an initial strain problem and use the temperature load vector expression in the text.) Take cross-sectional areas = 750 mm 2 , E = 200 GPa.