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...
| Autores: | , , |
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| Formato: | capítulo de livro |
| Fecha de publicación: | 2022 |
| País: | España |
| Recursos: | Universitat Politècnica de València (UPV) |
| Repositorio: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia |
| Idioma: | inglés |
| OAI Identifier: | oai:riunet.upv.es:10251/186548 |
| Acesso em linha: | https://riunet.upv.es/handle/10251/186548 |
| Access Level: | acceso abierto |
| Palavra-chave: | FETI Structural dynamics Krylov-Subspaces Recycling Multirate Time-Integration |
| Resumo: | [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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