Numerical modeling of steel fiber reinforced concrete with a discrete and explicit representation of steel fibers

Detalhes bibliográficos
Autor(a) principal: A. G. Bitencourt, Luís
Data de Publicação: 2019
Outros Autores: Manzoli, Osvaldo L. [UNESP], Bittencourt, Túlio N., Vecchio, Frank J.
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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spelling 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