CONCRETE FRACTURE ANALYSIS USING THE CONTINUUM STRONG DISCONTINUITY APPROACH AND THE BOUNDARY ELEMENT METHOD
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Revista Interdisciplinar de Pesquisa em Engenharia |
Texto Completo: | https://periodicos.unb.br/index.php/ripe/article/view/21600 |
Resumo: | The implicit formulation of the boundary element method is applied to bi-dimensional problems of material failure involving, sequentially, inelastic dissipation with softening in continuous media, bifurcation and transition between weak and strong discontinuities. The bifurcation condition is defined by the singularity of the localization tensor, also known, for historical reasons, as acoustic tensor. The weak discontinuities are related to strain localization bands of finite width, which become increasingly narrow until to collapse in a surface with discontinuous displacement field, called strong discontinuity surface. To associate such steps to the fracture process in concrete specimens, an isotropic damage (continuum) constitutive model is used to represent the material behaviour in all of them, taking into account the adaptations that comefrom the strong discontinuity analysis for the post-bifurcation phases. The crack propagation across the domain is done by an automatic cells generation algorithm and, in this context, the fracture process zone in the crack tip became totally represented by the cells in the continuum damage regime and the cells with weak discontinuities. |
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CONCRETE FRACTURE ANALYSIS USING THE CONTINUUM STRONG DISCONTINUITY APPROACH AND THE BOUNDARY ELEMENT METHODConcrete fracture. Damage constitutive models. Continuum Strong Discontinuity Approach. Boundary Element Method.The implicit formulation of the boundary element method is applied to bi-dimensional problems of material failure involving, sequentially, inelastic dissipation with softening in continuous media, bifurcation and transition between weak and strong discontinuities. The bifurcation condition is defined by the singularity of the localization tensor, also known, for historical reasons, as acoustic tensor. The weak discontinuities are related to strain localization bands of finite width, which become increasingly narrow until to collapse in a surface with discontinuous displacement field, called strong discontinuity surface. To associate such steps to the fracture process in concrete specimens, an isotropic damage (continuum) constitutive model is used to represent the material behaviour in all of them, taking into account the adaptations that comefrom the strong discontinuity analysis for the post-bifurcation phases. The crack propagation across the domain is done by an automatic cells generation algorithm and, in this context, the fracture process zone in the crack tip became totally represented by the cells in the continuum damage regime and the cells with weak discontinuities.Programa de Pós-Graduação em Integridade de Materiais da Engenharia2019-01-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://periodicos.unb.br/index.php/ripe/article/view/2160010.26512/ripe.v2i6.21600Revista Interdisciplinar de Pesquisa em Engenharia; Vol. 2 No. 6 (2016): BOUNDARY ELEMENT AND MESH REDUCED METHODS (I); 223-243Revista Interdisciplinar de Pesquisa em Engenharia; v. 2 n. 6 (2016): BOUNDARY ELEMENT AND MESH REDUCED METHODS (I); 223-2432447-6102reponame:Revista Interdisciplinar de Pesquisa em Engenhariainstname:Universidade de Brasília (UnB)instacron:UNBenghttps://periodicos.unb.br/index.php/ripe/article/view/21600/19918Copyright (c) 2019 Revista Interdisciplinar de Pesquisa em Engenharia - RIPEinfo:eu-repo/semantics/openAccessPeixoto, Rodrigo G.Ribeiro, Gabriel O.Pitangueira, Roque L. S.2019-06-07T18:19:59Zoai:ojs.pkp.sfu.ca:article/21600Revistahttps://periodicos.unb.br/index.php/ripePUBhttps://periodicos.unb.br/index.php/ripe/oaianflor@unb.br2447-61022447-6102opendoar:2019-06-07T18:19:59Revista Interdisciplinar de Pesquisa em Engenharia - Universidade de Brasília (UnB)false |
dc.title.none.fl_str_mv |
CONCRETE FRACTURE ANALYSIS USING THE CONTINUUM STRONG DISCONTINUITY APPROACH AND THE BOUNDARY ELEMENT METHOD |
title |
CONCRETE FRACTURE ANALYSIS USING THE CONTINUUM STRONG DISCONTINUITY APPROACH AND THE BOUNDARY ELEMENT METHOD |
spellingShingle |
CONCRETE FRACTURE ANALYSIS USING THE CONTINUUM STRONG DISCONTINUITY APPROACH AND THE BOUNDARY ELEMENT METHOD Peixoto, Rodrigo G. Concrete fracture. Damage constitutive models. Continuum Strong Discontinuity Approach. Boundary Element Method. |
title_short |
CONCRETE FRACTURE ANALYSIS USING THE CONTINUUM STRONG DISCONTINUITY APPROACH AND THE BOUNDARY ELEMENT METHOD |
title_full |
CONCRETE FRACTURE ANALYSIS USING THE CONTINUUM STRONG DISCONTINUITY APPROACH AND THE BOUNDARY ELEMENT METHOD |
title_fullStr |
CONCRETE FRACTURE ANALYSIS USING THE CONTINUUM STRONG DISCONTINUITY APPROACH AND THE BOUNDARY ELEMENT METHOD |
title_full_unstemmed |
CONCRETE FRACTURE ANALYSIS USING THE CONTINUUM STRONG DISCONTINUITY APPROACH AND THE BOUNDARY ELEMENT METHOD |
title_sort |
CONCRETE FRACTURE ANALYSIS USING THE CONTINUUM STRONG DISCONTINUITY APPROACH AND THE BOUNDARY ELEMENT METHOD |
author |
Peixoto, Rodrigo G. |
author_facet |
Peixoto, Rodrigo G. Ribeiro, Gabriel O. Pitangueira, Roque L. S. |
author_role |
author |
author2 |
Ribeiro, Gabriel O. Pitangueira, Roque L. S. |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Peixoto, Rodrigo G. Ribeiro, Gabriel O. Pitangueira, Roque L. S. |
dc.subject.por.fl_str_mv |
Concrete fracture. Damage constitutive models. Continuum Strong Discontinuity Approach. Boundary Element Method. |
topic |
Concrete fracture. Damage constitutive models. Continuum Strong Discontinuity Approach. Boundary Element Method. |
description |
The implicit formulation of the boundary element method is applied to bi-dimensional problems of material failure involving, sequentially, inelastic dissipation with softening in continuous media, bifurcation and transition between weak and strong discontinuities. The bifurcation condition is defined by the singularity of the localization tensor, also known, for historical reasons, as acoustic tensor. The weak discontinuities are related to strain localization bands of finite width, which become increasingly narrow until to collapse in a surface with discontinuous displacement field, called strong discontinuity surface. To associate such steps to the fracture process in concrete specimens, an isotropic damage (continuum) constitutive model is used to represent the material behaviour in all of them, taking into account the adaptations that comefrom the strong discontinuity analysis for the post-bifurcation phases. The crack propagation across the domain is done by an automatic cells generation algorithm and, in this context, the fracture process zone in the crack tip became totally represented by the cells in the continuum damage regime and the cells with weak discontinuities. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-01-07 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://periodicos.unb.br/index.php/ripe/article/view/21600 10.26512/ripe.v2i6.21600 |
url |
https://periodicos.unb.br/index.php/ripe/article/view/21600 |
identifier_str_mv |
10.26512/ripe.v2i6.21600 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://periodicos.unb.br/index.php/ripe/article/view/21600/19918 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2019 Revista Interdisciplinar de Pesquisa em Engenharia - RIPE info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2019 Revista Interdisciplinar de Pesquisa em Engenharia - RIPE |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Programa de Pós-Graduação em Integridade de Materiais da Engenharia |
publisher.none.fl_str_mv |
Programa de Pós-Graduação em Integridade de Materiais da Engenharia |
dc.source.none.fl_str_mv |
Revista Interdisciplinar de Pesquisa em Engenharia; Vol. 2 No. 6 (2016): BOUNDARY ELEMENT AND MESH REDUCED METHODS (I); 223-243 Revista Interdisciplinar de Pesquisa em Engenharia; v. 2 n. 6 (2016): BOUNDARY ELEMENT AND MESH REDUCED METHODS (I); 223-243 2447-6102 reponame:Revista Interdisciplinar de Pesquisa em Engenharia instname:Universidade de Brasília (UnB) instacron:UNB |
instname_str |
Universidade de Brasília (UnB) |
instacron_str |
UNB |
institution |
UNB |
reponame_str |
Revista Interdisciplinar de Pesquisa em Engenharia |
collection |
Revista Interdisciplinar de Pesquisa em Engenharia |
repository.name.fl_str_mv |
Revista Interdisciplinar de Pesquisa em Engenharia - Universidade de Brasília (UnB) |
repository.mail.fl_str_mv |
anflor@unb.br |
_version_ |
1798315226552074240 |