Numerical modeling of steel fiber reinforced concrete with a discrete and explicit representation of steel fibers
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.ijsolstr.2018.09.028 http://hdl.handle.net/11449/186929 |
Resumo: | This work presents a novel numerical model based on the use of coupling finite elements to simulate the behavior of steel fiber reinforced concrete (SFRC) with a discrete and explicit representation of steel fibers. The material is described as a composite made up by three phases: concrete, discrete discontinuous fibers and fiber-matrix interface. The steel fibers are modeled using two-node finite elements (truss elements) with a one-dimensional elastoplastic constitutive model. They are positioned using an isotropic uniform random distribution, considering the wall effect of the mold. A non-rigid coupling procedure is proposed for modeling the complex nonlinear behavior of the fiber-matrix interface by adopting an appropriate constitutive damage model to describe the relation between the shear stress (adherence stress) and the relative sliding between the matrix and each fiber individually. An isotropic damage model including two independent scalar damage variables for describing the concrete behavior under tension and compression is considered. To increase the computability and robustness of the continuum damage models used to simulate matrix and interface behavior, an implicit-explicit integration scheme is used. Numerical examples involving a single fiber and a cloud of fibers are performed. Comparisons with experimental results demonstrate that the application of the numerical strategy for modeling the behavior of SFRC is highly promising and may constitute an important tool for better understanding the effects of the different aspects involved in the failure process of this material. |
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Repositório Institucional da UNESP |
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Numerical modeling of steel fiber reinforced concrete with a discrete and explicit representation of steel fibersConcreteCoupling finite elementCrack propagationDamage constitutive modelImpl-Ex integration schemeSteel fiberThis work presents a novel numerical model based on the use of coupling finite elements to simulate the behavior of steel fiber reinforced concrete (SFRC) with a discrete and explicit representation of steel fibers. The material is described as a composite made up by three phases: concrete, discrete discontinuous fibers and fiber-matrix interface. The steel fibers are modeled using two-node finite elements (truss elements) with a one-dimensional elastoplastic constitutive model. They are positioned using an isotropic uniform random distribution, considering the wall effect of the mold. A non-rigid coupling procedure is proposed for modeling the complex nonlinear behavior of the fiber-matrix interface by adopting an appropriate constitutive damage model to describe the relation between the shear stress (adherence stress) and the relative sliding between the matrix and each fiber individually. An isotropic damage model including two independent scalar damage variables for describing the concrete behavior under tension and compression is considered. To increase the computability and robustness of the continuum damage models used to simulate matrix and interface behavior, an implicit-explicit integration scheme is used. Numerical examples involving a single fiber and a cloud of fibers are performed. Comparisons with experimental results demonstrate that the application of the numerical strategy for modeling the behavior of SFRC is highly promising and may constitute an important tool for better understanding the effects of the different aspects involved in the failure process of this material.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)University of São Paulo Av. Prof. Luciano Gualberto, Trav. 3 n. 380 - CEP - 05508-010São Paulo State University - UNESP/Bauru, Av. Eng. Luiz Edmundo C. Coube 14-01Department of Civil Engineering University of Toronto, 35 St. George St., M5S 1A4São Paulo State University - UNESP/Bauru, Av. Eng. Luiz Edmundo C. Coube 14-01FAPESP: 2009/07451-2FAPESP: 2012/05430-0CNPq: 2016-5CNPq: 429552Universidade de São Paulo (USP)Universidade Estadual Paulista (Unesp)University of TorontoA. G. Bitencourt, LuísManzoli, Osvaldo L. [UNESP]Bittencourt, Túlio N.Vecchio, Frank J.2019-10-06T15:20:08Z2019-10-06T15:20:08Z2019-03-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article171-190http://dx.doi.org/10.1016/j.ijsolstr.2018.09.028International Journal of Solids and Structures, v. 159, p. 171-190.0020-7683http://hdl.handle.net/11449/18692910.1016/j.ijsolstr.2018.09.0282-s2.0-85054504392Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengInternational Journal of Solids and Structuresinfo:eu-repo/semantics/openAccess2021-10-23T19:23:37Zoai:repositorio.unesp.br:11449/186929Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T23:26:00.416287Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Numerical modeling of steel fiber reinforced concrete with a discrete and explicit representation of steel fibers |
title |
Numerical modeling of steel fiber reinforced concrete with a discrete and explicit representation of steel fibers |
spellingShingle |
Numerical modeling of steel fiber reinforced concrete with a discrete and explicit representation of steel fibers A. G. Bitencourt, Luís Concrete Coupling finite element Crack propagation Damage constitutive model Impl-Ex integration scheme Steel fiber |
title_short |
Numerical modeling of steel fiber reinforced concrete with a discrete and explicit representation of steel fibers |
title_full |
Numerical modeling of steel fiber reinforced concrete with a discrete and explicit representation of steel fibers |
title_fullStr |
Numerical modeling of steel fiber reinforced concrete with a discrete and explicit representation of steel fibers |
title_full_unstemmed |
Numerical modeling of steel fiber reinforced concrete with a discrete and explicit representation of steel fibers |
title_sort |
Numerical modeling of steel fiber reinforced concrete with a discrete and explicit representation of steel fibers |
author |
A. G. Bitencourt, Luís |
author_facet |
A. G. Bitencourt, Luís Manzoli, Osvaldo L. [UNESP] Bittencourt, Túlio N. Vecchio, Frank J. |
author_role |
author |
author2 |
Manzoli, Osvaldo L. [UNESP] Bittencourt, Túlio N. Vecchio, Frank J. |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade de São Paulo (USP) Universidade Estadual Paulista (Unesp) University of Toronto |
dc.contributor.author.fl_str_mv |
A. G. Bitencourt, Luís Manzoli, Osvaldo L. [UNESP] Bittencourt, Túlio N. Vecchio, Frank J. |
dc.subject.por.fl_str_mv |
Concrete Coupling finite element Crack propagation Damage constitutive model Impl-Ex integration scheme Steel fiber |
topic |
Concrete Coupling finite element Crack propagation Damage constitutive model Impl-Ex integration scheme Steel fiber |
description |
This work presents a novel numerical model based on the use of coupling finite elements to simulate the behavior of steel fiber reinforced concrete (SFRC) with a discrete and explicit representation of steel fibers. The material is described as a composite made up by three phases: concrete, discrete discontinuous fibers and fiber-matrix interface. The steel fibers are modeled using two-node finite elements (truss elements) with a one-dimensional elastoplastic constitutive model. They are positioned using an isotropic uniform random distribution, considering the wall effect of the mold. A non-rigid coupling procedure is proposed for modeling the complex nonlinear behavior of the fiber-matrix interface by adopting an appropriate constitutive damage model to describe the relation between the shear stress (adherence stress) and the relative sliding between the matrix and each fiber individually. An isotropic damage model including two independent scalar damage variables for describing the concrete behavior under tension and compression is considered. To increase the computability and robustness of the continuum damage models used to simulate matrix and interface behavior, an implicit-explicit integration scheme is used. Numerical examples involving a single fiber and a cloud of fibers are performed. Comparisons with experimental results demonstrate that the application of the numerical strategy for modeling the behavior of SFRC is highly promising and may constitute an important tool for better understanding the effects of the different aspects involved in the failure process of this material. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-10-06T15:20:08Z 2019-10-06T15:20:08Z 2019-03-01 |
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://dx.doi.org/10.1016/j.ijsolstr.2018.09.028 International Journal of Solids and Structures, v. 159, p. 171-190. 0020-7683 http://hdl.handle.net/11449/186929 10.1016/j.ijsolstr.2018.09.028 2-s2.0-85054504392 |
url |
http://dx.doi.org/10.1016/j.ijsolstr.2018.09.028 http://hdl.handle.net/11449/186929 |
identifier_str_mv |
International Journal of Solids and Structures, v. 159, p. 171-190. 0020-7683 10.1016/j.ijsolstr.2018.09.028 2-s2.0-85054504392 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
International Journal of Solids and Structures |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
171-190 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808129520097558528 |