A simple model for viscous regularization of elasto-plastic constitutive laws with softening

Detalhes bibliográficos
Autor(a) principal: Silva, V. Dias da
Data de Publicação: 2004
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10316/8152
https://doi.org/10.1002/cnm.700
Resumo: An overlay-type rheological model is presented, which is used to introduce viscosity in inviscid elasto-plastic material laws with softening, in order to reduce the mesh-dependency of Finite Element solutions. This model is intended to be an alternative to the well-known visco-plastic formulations of Perzyna and Duvaut-Lions. A time integration algorithm for the visco-elastic model component is presented, being demonstrated in the paper, that it is unconditionally stable and oscillation-free. The algorithm is tested in a problem with slip driven softening (von Mises material) and in a problem with decohesion driven softening (Cam-Clay model). Figures showing the capability of the algorithm to regularize the solution are presented. Copyright © 2004 John Wiley & Sons, Ltd.
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spelling A simple model for viscous regularization of elasto-plastic constitutive laws with softeningAn overlay-type rheological model is presented, which is used to introduce viscosity in inviscid elasto-plastic material laws with softening, in order to reduce the mesh-dependency of Finite Element solutions. This model is intended to be an alternative to the well-known visco-plastic formulations of Perzyna and Duvaut-Lions. A time integration algorithm for the visco-elastic model component is presented, being demonstrated in the paper, that it is unconditionally stable and oscillation-free. The algorithm is tested in a problem with slip driven softening (von Mises material) and in a problem with decohesion driven softening (Cam-Clay model). Figures showing the capability of the algorithm to regularize the solution are presented. Copyright © 2004 John Wiley & Sons, Ltd.2004info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10316/8152http://hdl.handle.net/10316/8152https://doi.org/10.1002/cnm.700engCommunications in Numerical Methods in Engineering. 20:7 (2004) 547-568Silva, V. Dias dainfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2019-06-02T10:15:11Zoai:estudogeral.uc.pt:10316/8152Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:57:12.846339Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv A simple model for viscous regularization of elasto-plastic constitutive laws with softening
title A simple model for viscous regularization of elasto-plastic constitutive laws with softening
spellingShingle A simple model for viscous regularization of elasto-plastic constitutive laws with softening
Silva, V. Dias da
title_short A simple model for viscous regularization of elasto-plastic constitutive laws with softening
title_full A simple model for viscous regularization of elasto-plastic constitutive laws with softening
title_fullStr A simple model for viscous regularization of elasto-plastic constitutive laws with softening
title_full_unstemmed A simple model for viscous regularization of elasto-plastic constitutive laws with softening
title_sort A simple model for viscous regularization of elasto-plastic constitutive laws with softening
author Silva, V. Dias da
author_facet Silva, V. Dias da
author_role author
dc.contributor.author.fl_str_mv Silva, V. Dias da
description An overlay-type rheological model is presented, which is used to introduce viscosity in inviscid elasto-plastic material laws with softening, in order to reduce the mesh-dependency of Finite Element solutions. This model is intended to be an alternative to the well-known visco-plastic formulations of Perzyna and Duvaut-Lions. A time integration algorithm for the visco-elastic model component is presented, being demonstrated in the paper, that it is unconditionally stable and oscillation-free. The algorithm is tested in a problem with slip driven softening (von Mises material) and in a problem with decohesion driven softening (Cam-Clay model). Figures showing the capability of the algorithm to regularize the solution are presented. Copyright © 2004 John Wiley & Sons, Ltd.
publishDate 2004
dc.date.none.fl_str_mv 2004
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
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status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10316/8152
http://hdl.handle.net/10316/8152
https://doi.org/10.1002/cnm.700
url http://hdl.handle.net/10316/8152
https://doi.org/10.1002/cnm.700
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Communications in Numerical Methods in Engineering. 20:7 (2004) 547-568
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
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