Micromechanical study of the dilatational response of porous solids with pressure-insensitive matrix displaying tension-compression asymmetry
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/1822/53333 |
Resumo: | In this paper, the dilatational response of porous solids with pressure-insensitive matrix displaying strength differential (SD) effects is investigated. To this end, micromechanical finite-element analyses of three-dimensional unit cells are carried out. The matrix behavior is governed by the isotropic form of Cazacu et al. (2006) criterion that accounts for SD effects through a parameter k. Simulation results are presented for axisymmetric tensile loadings corresponding to fixed values of the stress triaxiality for the two possible values of the Lode parameter, LP. For moderate and high stress triaxialities, it is shown that for materials for which the matrix tensile strength is larger than its compressive strength (k > 0), under tensile loadings corresponding at LP=1 the void growth rate is much faster than in the case of tensile loadings at LP=-1. The opposite holds true for materials with matrix tensile strength lower than its compressive strength (k< 0). This drastic difference in porosity evolution is explained by the distribution of the local plastic strain and stresses, which are markedly different than in a von Mises material (i.e. no SD effects of the matrix). |
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Micromechanical study of the dilatational response of porous solids with pressure-insensitive matrix displaying tension-compression asymmetryTension-compression asymmetryPorous polycrystalsPorosity evolutionEngenharia e Tecnologia::Engenharia MecânicaScience & TechnologyIn this paper, the dilatational response of porous solids with pressure-insensitive matrix displaying strength differential (SD) effects is investigated. To this end, micromechanical finite-element analyses of three-dimensional unit cells are carried out. The matrix behavior is governed by the isotropic form of Cazacu et al. (2006) criterion that accounts for SD effects through a parameter k. Simulation results are presented for axisymmetric tensile loadings corresponding to fixed values of the stress triaxiality for the two possible values of the Lode parameter, LP. For moderate and high stress triaxialities, it is shown that for materials for which the matrix tensile strength is larger than its compressive strength (k > 0), under tensile loadings corresponding at LP=1 the void growth rate is much faster than in the case of tensile loadings at LP=-1. The opposite holds true for materials with matrix tensile strength lower than its compressive strength (k< 0). This drastic difference in porosity evolution is explained by the distribution of the local plastic strain and stresses, which are markedly different than in a von Mises material (i.e. no SD effects of the matrix).info:eu-repo/semantics/publishedVersionElsevierUniversidade do MinhoAlves, J. L.Cazacu, Oana20152015-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/53333eng0997-75381873-728510.1016/j.euromechsol.2014.11.010info: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:RCAAP2023-07-21T12:17:13Zoai:repositorium.sdum.uminho.pt:1822/53333Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:09:48.251695Repositório 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 |
Micromechanical study of the dilatational response of porous solids with pressure-insensitive matrix displaying tension-compression asymmetry |
title |
Micromechanical study of the dilatational response of porous solids with pressure-insensitive matrix displaying tension-compression asymmetry |
spellingShingle |
Micromechanical study of the dilatational response of porous solids with pressure-insensitive matrix displaying tension-compression asymmetry Alves, J. L. Tension-compression asymmetry Porous polycrystals Porosity evolution Engenharia e Tecnologia::Engenharia Mecânica Science & Technology |
title_short |
Micromechanical study of the dilatational response of porous solids with pressure-insensitive matrix displaying tension-compression asymmetry |
title_full |
Micromechanical study of the dilatational response of porous solids with pressure-insensitive matrix displaying tension-compression asymmetry |
title_fullStr |
Micromechanical study of the dilatational response of porous solids with pressure-insensitive matrix displaying tension-compression asymmetry |
title_full_unstemmed |
Micromechanical study of the dilatational response of porous solids with pressure-insensitive matrix displaying tension-compression asymmetry |
title_sort |
Micromechanical study of the dilatational response of porous solids with pressure-insensitive matrix displaying tension-compression asymmetry |
author |
Alves, J. L. |
author_facet |
Alves, J. L. Cazacu, Oana |
author_role |
author |
author2 |
Cazacu, Oana |
author2_role |
author |
dc.contributor.none.fl_str_mv |
Universidade do Minho |
dc.contributor.author.fl_str_mv |
Alves, J. L. Cazacu, Oana |
dc.subject.por.fl_str_mv |
Tension-compression asymmetry Porous polycrystals Porosity evolution Engenharia e Tecnologia::Engenharia Mecânica Science & Technology |
topic |
Tension-compression asymmetry Porous polycrystals Porosity evolution Engenharia e Tecnologia::Engenharia Mecânica Science & Technology |
description |
In this paper, the dilatational response of porous solids with pressure-insensitive matrix displaying strength differential (SD) effects is investigated. To this end, micromechanical finite-element analyses of three-dimensional unit cells are carried out. The matrix behavior is governed by the isotropic form of Cazacu et al. (2006) criterion that accounts for SD effects through a parameter k. Simulation results are presented for axisymmetric tensile loadings corresponding to fixed values of the stress triaxiality for the two possible values of the Lode parameter, LP. For moderate and high stress triaxialities, it is shown that for materials for which the matrix tensile strength is larger than its compressive strength (k > 0), under tensile loadings corresponding at LP=1 the void growth rate is much faster than in the case of tensile loadings at LP=-1. The opposite holds true for materials with matrix tensile strength lower than its compressive strength (k< 0). This drastic difference in porosity evolution is explained by the distribution of the local plastic strain and stresses, which are markedly different than in a von Mises material (i.e. no SD effects of the matrix). |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015 2015-01-01T00:00:00Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/1822/53333 |
url |
http://hdl.handle.net/1822/53333 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
0997-7538 1873-7285 10.1016/j.euromechsol.2014.11.010 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799132524704694272 |