A composite assembly consisting of a steel [G = 80 GPa] core (2) connected by rigid plates at the ends of an aluminum [G = 28 GPa] tube (1) is shown in Figure P6.63a/64a. The cross-sectional...

A composite assembly consisting of a steel [G = 80 GPa] core (2) connected by rigid plates at the ends of an aluminum [G = 28 GPa] tube (1) is shown in Figure P6.63a/64a. The cross-sectional dimensions of the assembly are shown in Figure P6.63b/64b. If a torque of T = 1,100 N-m is applied to the composite assembly, determine

(a) the maximum shear stress in the aluminum tube and in the steel core.

(b) the rotation angle of end B relative to end A.