Diagram shows an aluminum shaft A B with a support at A, marked 1 of length 2,000 millimeters and a brass shaft B C with a support at C, marked 2 of length 800 millimeters with a flange in between at B. The shafts are centered on the x axis. A torque T is applied at B.

In summary, the internal torques in shafts (1) and (2) are:

Τ1=4.97 kN-m
Τ2=-7.73 kN-m

The maximum torque T that can be applied to flange B without exceeding a rotation angle of is:

Τ=12.70 kN-m

Shear stress magnitudes are:

τ1=84.43 MPa
τ2=93.27 MPa

Finished