On Total Reuse of Krylov Subspaces for an iterative FETI-solver in multirate integration
[EN] In this work, we adapt a Total Reuse of Krylov Subspaces for usage in a GMRESsolver and apply it to nonlinear structural-dynamics examples. These examples are then solved by a multirate FETI-method, the nonlinear BGC-macro method, which allows local subcycling in time within substructures, such...
| Authors: | , , |
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| Format: | book part |
| Publication Date: | 2022 |
| Country: | España |
| Institution: | Universitat Politècnica de València (UPV) |
| Repository: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia |
| Language: | English |
| OAI Identifier: | oai:riunet.upv.es:10251/186548 |
| Online Access: | https://riunet.upv.es/handle/10251/186548 |
| Access Level: | Open access |
| Keyword: | FETI Structural dynamics Krylov-Subspaces Recycling Multirate Time-Integration |
| Summary: | [EN] In this work, we adapt a Total Reuse of Krylov Subspaces for usage in a GMRESsolver and apply it to nonlinear structural-dynamics examples. These examples are then solved by a multirate FETI-method, the nonlinear BGC-macro method, which allows local subcycling in time within substructures, such that local time-stepping is performed between synchronizationtime-steps. In these proposed examples, we show that the reuse-method reduces the total number of GMRES-iterations and shifts the eigenvalue-spectrum of the global system towards smaller eigenvalues. |
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