A laminated steel (E=200 GPa and nu=0.3) cylinder consists of a jacket with an inside diameter of 250mm and an outside diameter of 300mm shrunk onto a tube with an inside diameter of 150mm. The initial shrinkage pressure is 28MPa. Determine the following:
A. The initial interference required to produce ps=28 MPa.
B. The maximum tensile stress in the cylinder after it is fabricated using the interference of part (A) and subject to an internal pressure of 200MPa.