The information presented in this blog post is for educational purposes only. It should not be used for engineering design or relied upon as engineering advice.
The EngineeringPaper.xyz sheet below calculates the torsional stiffness, displacement, and max shear stress for a structural member loaded in torsion. This sheet allows the calculation to be performed using various cross-sections, both solid and hollow. This sheet requires the applied torque to be known in order to perform the calculations. To calculate the torque required to transmit a specified power, see the blog post on calculating the stress in a power transmission shaft.
This sheet may also be opened in a separate tab.