3.6 Three-dimensional stress analysis: Stress concentration in a stepped round bar subjected to torsion

Stepped round bars are also important fundamental structural and/or machine elements; they are found in automobile axels, pump shafts, shafts in other rotary machines, etc. Such shafts are subjected to torsion.

Torsion problems of circular shafts are one of the most important problems in engineering.

3.6.1 Example problem: A stepped round bar subjected to torsion

Perform an FEM analysis of a 3D stepped round bar subjected to an applied torque at the free end and clamped to the rigid wall at the other end, as shown in Fig. 3.128. Calculate the stress concentration at the foot of the fillet of the bar and the shear stress distribution on a ...

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