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Space-time proper generalized decompositions for the resolution of transient elastodynamic models

hal.structure.identifierLaboratoire de Mécanique des Contacts et des Structures [Villeurbanne] [LaMCoS]
hal.structure.identifierMécanique Multiéchelle pour les solides [MIMESIS]
dc.contributor.authorBOUCINHA, Lucas
hal.structure.identifierLaboratoire de Mécanique des Contacts et des Structures [Villeurbanne] [LaMCoS]
hal.structure.identifierMécanique Multiéchelle pour les solides [MIMESIS]
dc.contributor.authorGRAVOUIL, Anthony
hal.structure.identifierLaboratoire Angevin de Mécanique, Procédés et InnovAtion [LAMPA]
dc.contributor.authorAMMAR, Amine
dc.date.accessioned2021-05-14T10:03:33Z
dc.date.available2021-05-14T10:03:33Z
dc.date.created2012-01-20
dc.date.issued2013-03-01
dc.identifier.issn0045-7825
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/78414
dc.description.abstractEnIn 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.isoen
dc.publisherElsevier
dc.title.enSpace-time proper generalized decompositions for the resolution of transient elastodynamic models
dc.typeArticle de revue
dc.identifier.doi10.1016/j.cma.2012.11.003
dc.subject.halSciences de l'ingénieur [physics]/Mécanique [physics.med-ph]/Mécanique des structures [physics.class-ph]
dc.subject.halPhysique [physics]/Mécanique [physics]/Mécanique des structures [physics.class-ph]
bordeaux.journalComputer Methods in Applied Mechanics and Engineering
bordeaux.page67-88
bordeaux.volume255
bordeaux.hal.laboratoriesInstitut de Mécanique et d’Ingénierie de Bordeaux (I2M) - UMR 5295*
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionBordeaux INP
bordeaux.institutionCNRS
bordeaux.institutionINRAE
bordeaux.institutionArts et Métiers
bordeaux.peerReviewedoui
hal.identifierhal-00819289
hal.version1
dc.subject.itMulti-field proper generalized decomposition (MF-PGD)
dc.subject.itModel reduction
dc.subject.itElastodynamic
dc.subject.itSingular value decomposition (SVD)
dc.subject.itProper generalized decomposition (PGD)
dc.subject.itTensorial formalism
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00819289v1
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