# Torsion

Written by Jerry Ratzlaff on . Posted in Classical Mechanics

Torsion, abbreviated as T, is the stress of twisting of an object due to applied torque.

## FORMULAS THAT USE Torsion

 $$\large{ T = \frac{J}{r} \; \tau }$$

### Where:

$$\large{ T }$$  (Greek symbol tau) = applied torque or moment of torsion

$$\large{ J }$$  (Greek symbol alpha) = torsion constant

$$\large{ r }$$ = distance between the rotational axis and the farthest point in the section

$$\large{ \tau }$$ (Greek symbol tau) = maximum shear stress at the outer surface