Formulation for wave propagation in dissipative media and its application to absorbing layers in elastoplastic analysis using mathematical programming
| العنوان: | Formulation for wave propagation in dissipative media and its application to absorbing layers in elastoplastic analysis using mathematical programming |
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| المؤلفون: | Liang Wang, Xue Zhang, Stefano Tinti |
| المصدر: | International Journal for Numerical Methods in Engineering, 124 (15) |
| بيانات النشر: | ETH Zurich, 2023. |
| سنة النشر: | 2023 |
| مصطلحات موضوعية: | Numerical Analysis, stress wave propagation, Applied Mathematics, numerical simulation, absorbing layer, finite element analysis, mathematical programming, General Engineering |
| الوصف: | In this article, we propose a new solution scheme for modeling elastoplastic problems with stress wave propagation in dissipative media. The scheme is founded on a generalized Hellinger-Reissner (HR) variational principle. The principle renders the discretized boundary-value problem into an equivalent second-order cone programming (SOCP) problem that can be resolved in mathematical programming using the advanced optimization algorithm-the interior point method. In such a way, the developed method not only inherits admirable features of the SOCP-based finite element method in solving elastoplastic problems but also enables the enforcement of absorbing layers (i.e., Caughey absorbing layer), which is essential in modeling stress wave propagation problems, to absorb wave energy. The proposed scheme is validated via the comparison between analytical and numerical results for seismic wave propagation in dissipative media. Its application to elastoplastic dynamic problems with stress wave propagation is also illustrated to demonstrate its efficiency. International Journal for Numerical Methods in Engineering, 124 (15) ISSN:1097-0207 ISSN:0029-5981 |
| وصف الملف: | application/application/pdf |
| اللغة: | English |
| تدمد: | 1097-0207 0029-5981 |
| DOI: | 10.3929/ethz-b-000612257 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2e22c5298c93305687ae70cdc450f560Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....2e22c5298c93305687ae70cdc450f560 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 10970207 00295981 |
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| DOI: | 10.3929/ethz-b-000612257 |