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I-Section Shaft Torsion

This calculator calculates the maximum allowable torsion for a shaft with an I-Section shaped cross-section. This is done using the equation below.

T =τmax⋅JhmaxT\ =\frac{\tau_{max}\cdot J}{h_{max}}

The following are the variables for the equations...

  1. T = the torsion, twisting torque or tension. (Nm, lb f ft).
  1. τ = the shear stress (Pa).
  1. b = the inner breadth, i.e. the inner breadth of the channel section.
  1. h = the inner height, i.e. the inner height of the channel section.
  1. B = the larger breadth, i.e. the greater breadth of the channel section.
  1. H = the larger height, i.e. the greater height of the channel section.
Figure 1: Diagram of the I-Section Shaft to Calculate the Torsion


I-Section Shaft Torsion Calculator

Inputs



Inner height, h
:5.00m​



Top/bottom height, H
:4.00m​



Shear stress, τ
:5.00Pa​



Inner breadth, b
:5.00m​



Top/bottom breadth, B
:10.00m​


Output



Moment of inertia, J
:53,281.25​



Torsion, T
:53,281.25​


T =τmax⋅JbmaxT\ =\frac{\tau_{max}\cdot J}{b_{max}}

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