Stress-based topology optimization using an isoparametric level set method

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Failure Mitigation in Optimal Topology Design Using a Coupled Nonlinear Continuum Damage Model (2014, background): “The L-Bracket Problem The L-bracket structure appears frequently as an illustrative benchmark problem in topology optimization studies involving stress-based material failure constraints [42, 43, 44, 45, 46].”
A level set approach for topology optimization with local stress constraints (2014, background): “In [31] is presented an extension of that work to irregular domains and non-uniform meshes.”
Stress-based shape and topology optimization with the level set method (2018, background): “Most of the papers propose new penalty functions or global stress measures [18, 19, 20, 21].”