Using one-dimensional link or bar elements, create a one-dimensional mesh for the stepped shaft using elements with different cross-sectional areas. Note what happens at the sharp re-entrant corner. Refine the mesh in the vicinity of the step and report your results for the stress variation across the step.
Rerun the SimCafe tutorial refining the mesh in the vicinity of the fillet. Using h-convergence mesh refinement, optimize the ratio of element edge length to fillet radius, i.e. determien the ratio of element edge length to fillet radius that will result in a converged solution for the stress concentration to within the accuracy of the reported formula (5%).
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