Question: Two hollow tubes are connected by a pin at B which is inserted into a hole drilled through both tubes at B (see cross-section view

Two hollow tubes are connected by a pin at B which is inserted into a hole drilled through both tubes at B (see cross-section view at B). Tube BC fits snugly into tube AB but neglect any friction on the interface. Tube inner and outer diameters di (i = 1, 2, 3) and pin diameter dp are labeled in the figure. Torque T0 is applied at joint C. The shear modulus of elasticity of the material is G.
Find expressions for the maximum torque T0,max which can be applied at C for each of the following conditions.

Two hollow tubes are connected by a pin at B

(Tpin Tprallow) tube allow d3 TA To- Oe dh I.t Pin dLg Cross-section at B

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