A thick copper sleeve of outer diameter

400mm

is strengthened by shrinking on a thin steel sleeve. The wall thickness of the steel and copper cylinders are

20mm

and

50mm

respectively. Given that

E

steel =

207G(N)/(m^(2))

and for copper

=90G(N)/(m^(2))

, and Poisson's ratio is 0.3 , calculate:\ i) the interference required on the common diameter to produce an interference pressure of

6M(N)/(m^(2))

;\ ii) the maximum hoop stress developed in both the copper and steel cylinders;\ iii)the axial strain that would be recorded at the bore of the copper cylinder.

10. A thick copper sleeve of outer diameter 400mm is strengthened by shrinking on a thin steel sleeve. The wall thickness of the steel and copper cylinders are 20mm and 50mm respectively. Given that E steel = 207GN/m2 and for copper =90GN/m2, and Poisson's ratio is 0.3 , calculate: i) the interference required on the common diameter to produce an interference pressure of 6MN/m2; ii) the maximum hop stress developed in both the copper and steel cylinders; iii)the axial strain that would be recorded at the bore of the copper cylinder