Square Shaft Torsion

This calculator calculates the maximum allowable torsion for a square shaft. This is done with the equation below.
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T=2×τmaxH39T = \frac{2\times \tau_{max}H^3}{9}T=92×τmax​H3​
The following are the variables for the equations...
T = the torsion, twisting torque or tension. (Nm, lb f ft).
τ (max) = maximum shear stress (Pa).
H = the height of the shaft.
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Figure 1: Diagram of a Square Shaft to Calculate The Torsion
Square Shaft Torsion CalculatorInputs﻿﻿Max shear stress, τ (max)
:40.00Pa​
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﻿﻿Height, H
:1.50m​
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Output﻿﻿Torque, T
:30.00nm​
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T=2×τmaxH39T = \frac{2\times \tau_{max}H^3}{9}T=92×τmax​H3​
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