Figure P12.11 depicts a cylindrical rod of cross-sectional area A inserted into a tube o...

Figure P12.11 depicts a cylindrical rod of cross-sectional area A inserted into a tube of the same length L and of cross-sectional area A_t; the left ends of the members are attached to rigid support and the right ends to a rigid plate. When an axial load P is applied as shown, determine the maximum deflection and draw the load-deflection diagram of the rod–tube assembly. Given: L = 1.2 m, A_r = 45 mm², A_t = 60 mm², E_r = 200 GPa, E_t = 100 GPa, = 250 MPa, and = 310 MPa. Assumption: The rod and tube are both made of elastoplastic materials.