Problem: A compound cylinder is composed of a tube of 250mm internal diameter at 25mm wall thickness. it is shrunk on to a tube of 200mm internal diameter. the radial pressure at the junction is 8 N permmsquare. Evaluate the variation of hoop stresses across the wall of the compound cylinder, if it is under an internal fluid pressure of 60 N permmsquare. Take e = 200 GPa and m=3