Question

A bar of copper and steel form a composite system, which is heated to a temp of 40 degree . the stress in steel bar is

Answer 1

Assuming they are bonded over another and fixed at one end since the coefficient of thermal expansion for copper is more than steel. Copper will try to pull steel since they are the composite system in that sense copper will be subjected to compression and steel to tensile.

Answer 2

they are bonded over another and fixed at one end since the coefficient of thermal expansion for copper is more than steel .Copper will try to pull steel since they are the composite system in that sense copper will be subjected to compression and steel to tensile.