Numerical Modelling of Travertine Mechanical Behaviour Based on Rock Mechanics Tests of Vertical Plugs

Detalhes bibliográficos
Autor(a) principal: Kiewiet, Melissa Cristina Duque Nogueira
Data de Publicação: 2016
Outros Autores: Barroso, Emilio Vellos, Falcão, Flávia de Oliveira Lima, Moraes, Anderson, Kiewiet, Leigh Hessel, Kager, Shane
Tipo de documento: Artigo
Idioma: por
Título da fonte: Anuário do Instituto de Geociências (Online)
Texto Completo: https://revistas.ufrj.br/index.php/aigeo/article/view/6995
Resumo: Results of rock mechanics tests conducted on travertine plugs have been used to model the stress-strain behavior of this rock under confined and unconfined loadings, for future numerical representation of the intact rock surrounding fault zones, within a study about fault reactivation potential in carbonates. Due to the strain hardening tendency verified in most of the experiments results, a specific Mohr Coulomb model was applied, based on two different sets of cohesion, friction angle and dilation values. Although collapse events verified during the tests could not be captured by the modelling, it was possible to fit the dominant mechanical behavior of the rock, without relevant changes on the parameters measured during the experiments. The software used for this purpose was Tectos (PUC-Rio/Tecgraf - Petrobras), which considers plane strain state. As the experiments configure an axissymetric problem, future works will evaluate the representativity of plane strain model for this material and test conditions, through comparison of the current modelling results with the ones obtained using a different numerical tool.
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spelling Numerical Modelling of Travertine Mechanical Behaviour Based on Rock Mechanics Tests of Vertical PlugsModelagem Numérica do Comportamento Mecânico de Travertino Baseada em Ensaios Geomecânicos de Plugs VerticaisStress-strain behavior; Numerical modelling; Travertine.Comportamento tensão-deformação; Modelagem numérica; Travertinos.Results of rock mechanics tests conducted on travertine plugs have been used to model the stress-strain behavior of this rock under confined and unconfined loadings, for future numerical representation of the intact rock surrounding fault zones, within a study about fault reactivation potential in carbonates. Due to the strain hardening tendency verified in most of the experiments results, a specific Mohr Coulomb model was applied, based on two different sets of cohesion, friction angle and dilation values. Although collapse events verified during the tests could not be captured by the modelling, it was possible to fit the dominant mechanical behavior of the rock, without relevant changes on the parameters measured during the experiments. The software used for this purpose was Tectos (PUC-Rio/Tecgraf - Petrobras), which considers plane strain state. As the experiments configure an axissymetric problem, future works will evaluate the representativity of plane strain model for this material and test conditions, through comparison of the current modelling results with the ones obtained using a different numerical tool.Resultados de ensaios de mecânica de rochas conduzidos em corpos de prova de travertino foram utilizados para a modelagem do comportamento tensão-deformação desta rocha sob condições confinadas e não confinadas, para posterior simulação numérica do comportamento geomecânico da rocha intacta circundante às zonas de falha em um estudo do potencial de reativação de falhas em carbonatos. Devido à ocorrência de endurecimento verificada na maioria dos testes optou-se por utilizar modelo Mohr Coulomb não associado variável, a partir de dois conjuntos de parâmetros mecânicos -- coesão, ângulo de atrito e dilatância - para cada modelo. Apesar dos prováveis colapsos de poros ocorridos durante os ensaios não serem capturados pelos modelos, foi possível ajustar o comportamento mecânico dominante observado nos testes de laboratório, sem alterações significativas dos parâmetros medidos experimentalmente. A ferramenta utilizada para a modelagem foi o Tectos (PUC-Rio/Tecgraf -- Petrobras), que considera estado plano de deformação. Tendo em vista que os ensaios representam um problema axissimétrico, trabalhos futuros avaliarão a representatividade do modelo de estado plano para o caso em estudo, via comparação desta modelagem com a realizada usando outra ferramenta numérica.Universidade Federal do Rio de Janeiro2016-06-23info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://revistas.ufrj.br/index.php/aigeo/article/view/699510.11137/2016_2_15_28Anuário do Instituto de Geociências; Vol 39, No 2 (2016); 15-28Anuário do Instituto de Geociências; Vol 39, No 2 (2016); 15-281982-39080101-9759reponame:Anuário do Instituto de Geociências (Online)instname:Universidade Federal do Rio de Janeiro (UFRJ)instacron:UFRJporhttps://revistas.ufrj.br/index.php/aigeo/article/view/6995/5562Copyright (c) 2016 Anuário do Instituto de Geociênciashttp://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessKiewiet, Melissa Cristina Duque NogueiraBarroso, Emilio VellosFalcão, Flávia de Oliveira LimaMoraes, AndersonKiewiet, Leigh HesselKager, Shane2017-01-23T22:48:34Zoai:www.revistas.ufrj.br:article/6995Revistahttps://revistas.ufrj.br/index.php/aigeo/indexPUBhttps://revistas.ufrj.br/index.php/aigeo/oaianuario@igeo.ufrj.br||1982-39080101-9759opendoar:2017-01-23T22:48:34Anuário do Instituto de Geociências (Online) - Universidade Federal do Rio de Janeiro (UFRJ)false
dc.title.none.fl_str_mv Numerical Modelling of Travertine Mechanical Behaviour Based on Rock Mechanics Tests of Vertical Plugs
Modelagem Numérica do Comportamento Mecânico de Travertino Baseada em Ensaios Geomecânicos de Plugs Verticais
title Numerical Modelling of Travertine Mechanical Behaviour Based on Rock Mechanics Tests of Vertical Plugs
spellingShingle Numerical Modelling of Travertine Mechanical Behaviour Based on Rock Mechanics Tests of Vertical Plugs
Kiewiet, Melissa Cristina Duque Nogueira
Stress-strain behavior; Numerical modelling; Travertine.
Comportamento tensão-deformação; Modelagem numérica; Travertinos.
title_short Numerical Modelling of Travertine Mechanical Behaviour Based on Rock Mechanics Tests of Vertical Plugs
title_full Numerical Modelling of Travertine Mechanical Behaviour Based on Rock Mechanics Tests of Vertical Plugs
title_fullStr Numerical Modelling of Travertine Mechanical Behaviour Based on Rock Mechanics Tests of Vertical Plugs
title_full_unstemmed Numerical Modelling of Travertine Mechanical Behaviour Based on Rock Mechanics Tests of Vertical Plugs
title_sort Numerical Modelling of Travertine Mechanical Behaviour Based on Rock Mechanics Tests of Vertical Plugs
author Kiewiet, Melissa Cristina Duque Nogueira
author_facet Kiewiet, Melissa Cristina Duque Nogueira
Barroso, Emilio Vellos
Falcão, Flávia de Oliveira Lima
Moraes, Anderson
Kiewiet, Leigh Hessel
Kager, Shane
author_role author
author2 Barroso, Emilio Vellos
Falcão, Flávia de Oliveira Lima
Moraes, Anderson
Kiewiet, Leigh Hessel
Kager, Shane
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Kiewiet, Melissa Cristina Duque Nogueira
Barroso, Emilio Vellos
Falcão, Flávia de Oliveira Lima
Moraes, Anderson
Kiewiet, Leigh Hessel
Kager, Shane
dc.subject.por.fl_str_mv Stress-strain behavior; Numerical modelling; Travertine.
Comportamento tensão-deformação; Modelagem numérica; Travertinos.
topic Stress-strain behavior; Numerical modelling; Travertine.
Comportamento tensão-deformação; Modelagem numérica; Travertinos.
description Results of rock mechanics tests conducted on travertine plugs have been used to model the stress-strain behavior of this rock under confined and unconfined loadings, for future numerical representation of the intact rock surrounding fault zones, within a study about fault reactivation potential in carbonates. Due to the strain hardening tendency verified in most of the experiments results, a specific Mohr Coulomb model was applied, based on two different sets of cohesion, friction angle and dilation values. Although collapse events verified during the tests could not be captured by the modelling, it was possible to fit the dominant mechanical behavior of the rock, without relevant changes on the parameters measured during the experiments. The software used for this purpose was Tectos (PUC-Rio/Tecgraf - Petrobras), which considers plane strain state. As the experiments configure an axissymetric problem, future works will evaluate the representativity of plane strain model for this material and test conditions, through comparison of the current modelling results with the ones obtained using a different numerical tool.
publishDate 2016
dc.date.none.fl_str_mv 2016-06-23
dc.type.none.fl_str_mv
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://revistas.ufrj.br/index.php/aigeo/article/view/6995
10.11137/2016_2_15_28
url https://revistas.ufrj.br/index.php/aigeo/article/view/6995
identifier_str_mv 10.11137/2016_2_15_28
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://revistas.ufrj.br/index.php/aigeo/article/view/6995/5562
dc.rights.driver.fl_str_mv Copyright (c) 2016 Anuário do Instituto de Geociências
http://creativecommons.org/licenses/by/4.0
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2016 Anuário do Instituto de Geociências
http://creativecommons.org/licenses/by/4.0
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidade Federal do Rio de Janeiro
publisher.none.fl_str_mv Universidade Federal do Rio de Janeiro
dc.source.none.fl_str_mv Anuário do Instituto de Geociências; Vol 39, No 2 (2016); 15-28
Anuário do Instituto de Geociências; Vol 39, No 2 (2016); 15-28
1982-3908
0101-9759
reponame:Anuário do Instituto de Geociências (Online)
instname:Universidade Federal do Rio de Janeiro (UFRJ)
instacron:UFRJ
instname_str Universidade Federal do Rio de Janeiro (UFRJ)
instacron_str UFRJ
institution UFRJ
reponame_str Anuário do Instituto de Geociências (Online)
collection Anuário do Instituto de Geociências (Online)
repository.name.fl_str_mv Anuário do Instituto de Geociências (Online) - Universidade Federal do Rio de Janeiro (UFRJ)
repository.mail.fl_str_mv anuario@igeo.ufrj.br||
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