Space-time proper generalized decompositions for the resolution of transient elastodynamic models
| hal.structure.identifier | Laboratoire de Mécanique des Contacts et des Structures [Villeurbanne] [LaMCoS] | |
| dc.contributor.author | BOUCINHA, Lucas | |
| hal.structure.identifier | Laboratoire de Mécanique des Contacts et des Structures [Villeurbanne] [LaMCoS] | |
| hal.structure.identifier | Institut universitaire de France [IUF] | |
| dc.contributor.author | GRAVOUIL, Anthony | |
| hal.structure.identifier | Laboratoire Angevin de Mécanique, Procédés et InnovAtion [LAMPA] | |
| dc.contributor.author | AMMAR, Amine | |
| dc.date.accessioned | 2021-05-14T10:00:32Z | |
| dc.date.available | 2021-05-14T10:00:32Z | |
| dc.date.issued | 2013-03-01 | |
| dc.identifier.issn | 0045-7825 | |
| dc.identifier.uri | https://oskar-bordeaux.fr/handle/20.500.12278/78137 | |
| dc.description.abstractEn | In this paper, we investigate ability of proper generalized decomposition (PGD) to solve transient elastodynamic models in space-time domain. Classical methods use time integration schemes and an incremental resolution process. We propose here to use standard time integration methods in a non-incremental strategy. As a result, PGD gives a separated representation of the space-time solution as a sum of tensorial products of space and time vectors, that we interpret as space-time modes. Recent time integration schemes are based on multi-field formulations. In this case, separated representation can be constructed using state vectors in space and same vectors in time. However, we have experienced bad convergence order using this decomposition. Furthermore, temporal approximation must be the same for all fields. Thus, we propose an extension of classical separated representation for multi-field problems. This multi-field PGD (MF-PGD) uses space and time vectors that are different for each field. Calculation of decomposition is done using a monolithic approach in space and time, potentially allowing the use of different approximations in space and time. Finally, several simulations are performed with the transient elastodynamic problem with one dimension in space. Different approximations in time are investigated: Newmark scheme, single field time discontinuous Galerkin method and two fields time continuous and discontinuous Galerkin methods. | |
| dc.language.iso | en | |
| dc.publisher | Elsevier | |
| dc.subject.en | Model reduction | |
| dc.subject.en | Elastodynamic | |
| dc.subject.en | Singular value decomposition (SVD) | |
| dc.subject.en | Proper generalized decomposition (PGD) | |
| dc.subject.en | Multi-field proper generalized decomposition (MF-PGD) | |
| dc.subject.en | Tensorial formalism | |
| dc.title.en | Space-time proper generalized decompositions for the resolution of transient elastodynamic models | |
| dc.type | Article de revue | |
| dc.subject.hal | Sciences de l'ingénieur [physics]/Mécanique [physics.med-ph] | |
| bordeaux.journal | Computer Methods in Applied Mechanics and Engineering | |
| bordeaux.page | 67-88 | |
| bordeaux.volume | 255 | |
| bordeaux.hal.laboratories | Institut de Mécanique et d’Ingénierie de Bordeaux (I2M) - UMR 5295 | * |
| bordeaux.institution | Université de Bordeaux | |
| bordeaux.institution | Bordeaux INP | |
| bordeaux.institution | CNRS | |
| bordeaux.institution | INRAE | |
| bordeaux.institution | Arts et Métiers | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-01061196 | |
| hal.version | 1 | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-01061196v1 | |
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