On some topics for the numerical simulation of ductile fracture

Autores
Sánchez, Pablo Javier; Oliver, Juan Pablo; Huespe, Alfredo Edmundo
Año de publicación
2008
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In this work, we analyze some aspects of the macroscopic Gurson-Tvergaard-Needleman (GTN) constitutive model when it is addressed to solve ductile fracture problems by means of numerical simulations:(i) The analytical solutions of the material discontinuous bifurcation problem is performed.Closed and exact formulas are obtained. The so determined critical conditions and the developed strain localization mode are afterward studied and compared in crack growth problems. Even when this methodology of analysis is rather standard at the present, the conclusions drawn from this study differ significantly from that obtained with a similar analysis in quasi-brittle fracture problems.(ii) A new very robust numerical integration method for the GTN model, namely the Impl-Ex Method, is proposed. It is a low computational cost algorithm, equivalent to a linear problem per each integration step, with a reasonable precision for engineering purposes. Its accuracy and convergence rate is assessed by means of an error study applied to a ductile fracture test simulation.(iii) A detailed analysis of a plane strain ductile crack growth problem is performed in a material containing two size-scale of voids. In the analysis, particular attention is given to the mesh size dependence and to the coalescence of the larger void.
Fil: Sánchez, Pablo Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina
Fil: Oliver, Juan Pablo. Technical University of Catalonia; España
Fil: Huespe, Alfredo Edmundo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina
Materia
Ductile Crack Growth;
Elasto-Plastic Porous Material
Finite Elements; Implex Algorithm;
Bifurcation And Strain Localization by Void Coalescence
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/25388
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/25388
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling On some topics for the numerical simulation of ductile fractureSánchez, Pablo JavierOliver, Juan PabloHuespe, Alfredo EdmundoDuctile Crack Growth;Elasto-Plastic Porous MaterialFinite Elements; Implex Algorithm;Bifurcation And Strain Localization by Void CoalescenceIn this work, we analyze some aspects of the macroscopic Gurson-Tvergaard-Needleman (GTN) constitutive model when it is addressed to solve ductile fracture problems by means of numerical simulations:(i) The analytical solutions of the material discontinuous bifurcation problem is performed.Closed and exact formulas are obtained. The so determined critical conditions and the developed strain localization mode are afterward studied and compared in crack growth problems. Even when this methodology of analysis is rather standard at the present, the conclusions drawn from this study differ significantly from that obtained with a similar analysis in quasi-brittle fracture problems.(ii) A new very robust numerical integration method for the GTN model, namely the Impl-Ex Method, is proposed. It is a low computational cost algorithm, equivalent to a linear problem per each integration step, with a reasonable precision for engineering purposes. Its accuracy and convergence rate is assessed by means of an error study applied to a ductile fracture test simulation.(iii) A detailed analysis of a plane strain ductile crack growth problem is performed in a material containing two size-scale of voids. In the analysis, particular attention is given to the mesh size dependence and to the coalescence of the larger void.Fil: Sánchez, Pablo Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; ArgentinaFil: Oliver, Juan Pablo. Technical University of Catalonia; EspañaFil: Huespe, Alfredo Edmundo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; ArgentinaElsevier2008-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/25388Sánchez, Pablo Javier; Oliver, Juan Pablo; Huespe, Alfredo Edmundo; On some topics for the numerical simulation of ductile fracture; Elsevier; International Journal of Plasticity; 24; 6; 12-2008; 1008-10380749-6419CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.ijplas.2007.08.004info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0749641907001155info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:51:49Zoai:ri.conicet.gov.ar:11336/25388instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:51:49.473CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv On some topics for the numerical simulation of ductile fracture
title On some topics for the numerical simulation of ductile fracture
spellingShingle On some topics for the numerical simulation of ductile fracture
Sánchez, Pablo Javier
Ductile Crack Growth;
Elasto-Plastic Porous Material
Finite Elements; Implex Algorithm;
Bifurcation And Strain Localization by Void Coalescence
title_short On some topics for the numerical simulation of ductile fracture
title_full On some topics for the numerical simulation of ductile fracture
title_fullStr On some topics for the numerical simulation of ductile fracture
title_full_unstemmed On some topics for the numerical simulation of ductile fracture
title_sort On some topics for the numerical simulation of ductile fracture
dc.creator.none.fl_str_mv Sánchez, Pablo Javier
Oliver, Juan Pablo
Huespe, Alfredo Edmundo
author Sánchez, Pablo Javier
author_facet Sánchez, Pablo Javier
Oliver, Juan Pablo
Huespe, Alfredo Edmundo
author_role author
author2 Oliver, Juan Pablo
Huespe, Alfredo Edmundo
author2_role author
author
dc.subject.none.fl_str_mv Ductile Crack Growth;
Elasto-Plastic Porous Material
Finite Elements; Implex Algorithm;
Bifurcation And Strain Localization by Void Coalescence
topic Ductile Crack Growth;
Elasto-Plastic Porous Material
Finite Elements; Implex Algorithm;
Bifurcation And Strain Localization by Void Coalescence
dc.description.none.fl_txt_mv In this work, we analyze some aspects of the macroscopic Gurson-Tvergaard-Needleman (GTN) constitutive model when it is addressed to solve ductile fracture problems by means of numerical simulations:(i) The analytical solutions of the material discontinuous bifurcation problem is performed.Closed and exact formulas are obtained. The so determined critical conditions and the developed strain localization mode are afterward studied and compared in crack growth problems. Even when this methodology of analysis is rather standard at the present, the conclusions drawn from this study differ significantly from that obtained with a similar analysis in quasi-brittle fracture problems.(ii) A new very robust numerical integration method for the GTN model, namely the Impl-Ex Method, is proposed. It is a low computational cost algorithm, equivalent to a linear problem per each integration step, with a reasonable precision for engineering purposes. Its accuracy and convergence rate is assessed by means of an error study applied to a ductile fracture test simulation.(iii) A detailed analysis of a plane strain ductile crack growth problem is performed in a material containing two size-scale of voids. In the analysis, particular attention is given to the mesh size dependence and to the coalescence of the larger void.
Fil: Sánchez, Pablo Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina
Fil: Oliver, Juan Pablo. Technical University of Catalonia; España
Fil: Huespe, Alfredo Edmundo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina
description In this work, we analyze some aspects of the macroscopic Gurson-Tvergaard-Needleman (GTN) constitutive model when it is addressed to solve ductile fracture problems by means of numerical simulations:(i) The analytical solutions of the material discontinuous bifurcation problem is performed.Closed and exact formulas are obtained. The so determined critical conditions and the developed strain localization mode are afterward studied and compared in crack growth problems. Even when this methodology of analysis is rather standard at the present, the conclusions drawn from this study differ significantly from that obtained with a similar analysis in quasi-brittle fracture problems.(ii) A new very robust numerical integration method for the GTN model, namely the Impl-Ex Method, is proposed. It is a low computational cost algorithm, equivalent to a linear problem per each integration step, with a reasonable precision for engineering purposes. Its accuracy and convergence rate is assessed by means of an error study applied to a ductile fracture test simulation.(iii) A detailed analysis of a plane strain ductile crack growth problem is performed in a material containing two size-scale of voids. In the analysis, particular attention is given to the mesh size dependence and to the coalescence of the larger void.
publishDate 2008
dc.date.none.fl_str_mv 2008-12
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/25388
Sánchez, Pablo Javier; Oliver, Juan Pablo; Huespe, Alfredo Edmundo; On some topics for the numerical simulation of ductile fracture; Elsevier; International Journal of Plasticity; 24; 6; 12-2008; 1008-1038
0749-6419
CONICET Digital
CONICET
url http://hdl.handle.net/11336/25388
identifier_str_mv Sánchez, Pablo Javier; Oliver, Juan Pablo; Huespe, Alfredo Edmundo; On some topics for the numerical simulation of ductile fracture; Elsevier; International Journal of Plasticity; 24; 6; 12-2008; 1008-1038
0749-6419
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.ijplas.2007.08.004
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0749641907001155
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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