Torsional Deflection of Hollow Cylinder Calculator

Strength / Mechanics of Materials

In solid mechanics, torsion is the twisting of an object due to an applied torque. It is expressed in newton metres (N·m) or foot-pound force (in·lb). In sections perpendicular to the torque axis, the resultant shear stress in this section is perpendicular to the radius.

Torsional Deflection of Hollow Cylinder Equations

Torsional Deflection of Hollow Shaft
Applied Torque T (N-mm, in-lb) =
Shear Modulus G (Mpa, psi) = 
Outside Diameter D (mm, in.) =
Inside Diameter d (mm, in.) =
Unsupported Length L (mm, in) = 
Deflection of shaft (radians)
Example calculations are in imperial units (in-lbs, psi, etc.)