Torsional Deflection of 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.

Shear Stress in Shafts Equations

Shear Stress in Solid Shaft
Applied Torque T (N-mm, in-lb) =
Distance Center to Stressed Surface (mm, in) = 
Polar Moment of Inertia" of Cross Section (mm4, in4) =
Shear Stress (MPa, psi) = 
Example calculations are in imperial units (in-lbs, psi, etc.)