need help A downhole tool has a composite shaft made of a tight aluminum sleeve

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A downhole tool has a composite shaft made of a tight aluminum sleeve inside a steel drill collar jacket. A torque of magnitude 5162 lbf-ft is applied at the free end of the composite drillcollar where as the other end is fixed. Geometrical dimensions are of the tools are steel (OD = 8 in, ID = 4 in) Aluminium (ID = 3.5in), length 8.202 ft. Assume a modulus of rigidity of 11167.905 kpsi for steel and 3916.018 kpsi for the aluminum. Calculate the following maximum shearing stress experienced in the inner aluminum sleeve maximum shearing stress experienced in the steel jacket the angle of twist at the end where torque is applied

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