13.2 THE RELATIONSHIP BETWEEN STRESS AND STRAIN IN TORSION

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À  p

Although we are applying a torque (moment) it creates stresses and strains in the material.

Consider the surface of a rod in torsion.

Consider the example problem below. [Gere and Timoshenko, 3.7-4 Pg. 256]

Consider the case below,

13.2.1 Summary

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If we draw a stress element we can derive the relationship between the normal and shear stresses.

The basic torsion relationships are given below.