Two rods of different materials but having same length L and cross-sectioinal areas A are arranged end-to-end between fixed supports. The temperature is T and there is no initial stress. The rods are heated so that their temperature increases by DeltaT. Find : (a) the displacement of the interface (b) the stress at the interface. The coefficinets of linear expansioin of the materials are alpha_(1) and alpha_(2) and their Young's modulii are E_(1) and E_(2) respectively.

Two rods of different materials but having same length L and cross-sec

1.	Two rods of different materials but having same length L and cross-sectioinal areas A are arranged end-to-end between fixed supports. The temperature is T and there is no initial stress. The rods are heated so that their temperature increases by DeltaT. Find : (a) the displacement of the interface (b) the stress at the interface. The coefficinets of linear expansioin of the materials are alpha_(1) and alpha_(2) and their Young's modulii are E_(1) and E_(2) respectively.
Answer» ANSWER :`(E_(1)E_(2)(alpha_(1)+alpha_(2))DeltaT)/(E_(1)+E_(2))`