Monolithic overlapping Schwarz preconditioners for nonlinear finite element simulations of laser beam welding processes
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arXiv
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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866909241116196864 |
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| author | Bevilacqua, Tommaso Klawonn, Axel Lanser, Martin Wasiak, Adam |
| author_facet | Bevilacqua, Tommaso Klawonn, Axel Lanser, Martin Wasiak, Adam |
| contents | Highly resolved finite element simulations of a laser beam welding process are considered. The thermomechanical behavior of this process is modeled with a set of thermoelasticity equations resulting in a nonlinear, nonsymmetric saddle point system. Newton's method is used to solve the nonlinearity and suitable domain decomposition preconditioners are applied to accelerate the convergence of the iterative method used to solve all linearized systems. Since a onelevel Schwarz preconditioner is in general not scalable, a second level has to be added. Therefore, the construction and numerical analysis of a monolithic, twolevel overlapping Schwarz approach with the GDSW (Generalized Dryja-Smith-Widlund) coarse space and an economic variant thereof are presented here. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2407_03230 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Monolithic overlapping Schwarz preconditioners for nonlinear finite element simulations of laser beam welding processes Bevilacqua, Tommaso Klawonn, Axel Lanser, Martin Wasiak, Adam Numerical Analysis 65N55, 65M60, 74F05 Highly resolved finite element simulations of a laser beam welding process are considered. The thermomechanical behavior of this process is modeled with a set of thermoelasticity equations resulting in a nonlinear, nonsymmetric saddle point system. Newton's method is used to solve the nonlinearity and suitable domain decomposition preconditioners are applied to accelerate the convergence of the iterative method used to solve all linearized systems. Since a onelevel Schwarz preconditioner is in general not scalable, a second level has to be added. Therefore, the construction and numerical analysis of a monolithic, twolevel overlapping Schwarz approach with the GDSW (Generalized Dryja-Smith-Widlund) coarse space and an economic variant thereof are presented here. |
| title | Monolithic overlapping Schwarz preconditioners for nonlinear finite element simulations of laser beam welding processes |
| topic | Numerical Analysis 65N55, 65M60, 74F05 |
| url | https://arxiv.org/abs/2407.03230 |