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Geometric boundary iso#
The governing state equations are solved using Iso Geometric Analysis (IGA). Subsequently, a mechanical model that replicates the geometrical model precisely is constructed by mesh refinement. Untrimming techniques are used to construct the topology from the implicit boundaries defined by the level set function. The geometrical model is a spline-based topology that evolves following the level set method. In this paper, we address stress-constrained topology optimization using an explicit and precise representation of the boundaries. The solution of stress-constrained topology optimization problems is strongly affected by the accuracy of the computed stresses on the boundary of the evolving structure.
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