2021/03/28 by Daniel Luft, Volker Schulz, Luft, Daniel +1
Computer Science · Engineering · #3D Shape Modeling and Analysis #Computational Geometry and Mesh Generation #FOS: Mathematics #Optimization and Control (math.OC) #Topology Optimization in Engineering
paper · pdf · doi:10.48550/arxiv.2103.15109
openalex publication_date 2021/03/28 · openalex created_date 2023/02/16 · openalex updated_date 2026/07/28
Computational meshes arising from shape optimization routines commonly suffer from decrease of mesh quality or even destruction of the mesh. In this work, we provide an approach to regularize general shape optimization problems to increase both shape and volume mesh quality. For this, we employ pre-shape calculus (cf. arXiv:2012.09124). Existence of regularized solutions is guaranteed. Further, consistency of modified pre-shape gradient systems is established. We present pre-shape gradient system modifications, which permit simultaneous shape optimization with mesh quality improvement. Optimal shapes to the original problem are left invariant under regularization. The computational burden of our approach is limited, since additional solution of possibly larger (non-)linear systems for regularized shape gradients is not necessary. We implement and compare pre-shape gradient regularization approaches for a hard to solve 2D problem. As our approach does not depend on the choice of metrics representing shape gradients, we employ and compare several different metrics.