Numerical simulation of the flexural behaviour of composite glass-GFRP beams using smeared crack models

Detalhes bibliográficos
Autor(a) principal: Valarinho, Luís
Data de Publicação: 2017
Outros Autores: Sena-Cruz, José, Correia, João R., Branco, Fernando A.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/1822/43900
Resumo: This paper presents a numerical study about the flexural behaviour of rectangular composite glass-GFRP beams, comprising annealed glass and GFRP pultruded profiles bonded with two different adhesives: (soft) polyurethane and (stiff) epoxy. The main objectives of this study were: (i) to fully characterize the non-linear behaviour of glass using the smeared crack approach; and (ii) to assess the applicability of different options to simulate adhesively bonded glass-GFRP joints. An extensive parametric study was developed to evaluate the influence of five parameters on the glass post-cracking non-linear behaviour: (i) glass fracture energy, Gf, (ii) crack band width, h, (iii) glass tensile strength, fg,t, (iv) shape of the tension-softening diagram, and (v) shear retention factor, β. The wide range of the joints’ shear stiffness was simulated by either (i) assuming a perfect bond between glass and GFRP (i.e., neglecting the presence of the adhesive), or (ii) explicitly considering the adhesive, by means of using (ii.1) plane stress elements, or (ii.2) interface elements. For the beams analysed in this paper, the following material model for glass provided a good agreement with experimental results: Gf in the range of 3 to 300 N/m, h equal to the square root of the finite element area, fg,t = 50 MPa, linear softening diagram and β according to a power law. It was also shown that the hypothesis of perfect bond at the GFRP-glass interfaces allows for an accurate simulation of joints with high levels of interaction (epoxy), while calibrated interface elements are needed for joints with low level of interaction (polyurethane).
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spelling Numerical simulation of the flexural behaviour of composite glass-GFRP beams using smeared crack modelsGlass-GFRP composite beamsNumerical analysisSmeared crack approachAdhesively bonded jointsInterface elementsParametric studyEngenharia e Tecnologia::Engenharia CivilScience & TechnologyThis paper presents a numerical study about the flexural behaviour of rectangular composite glass-GFRP beams, comprising annealed glass and GFRP pultruded profiles bonded with two different adhesives: (soft) polyurethane and (stiff) epoxy. The main objectives of this study were: (i) to fully characterize the non-linear behaviour of glass using the smeared crack approach; and (ii) to assess the applicability of different options to simulate adhesively bonded glass-GFRP joints. An extensive parametric study was developed to evaluate the influence of five parameters on the glass post-cracking non-linear behaviour: (i) glass fracture energy, Gf, (ii) crack band width, h, (iii) glass tensile strength, fg,t, (iv) shape of the tension-softening diagram, and (v) shear retention factor, β. The wide range of the joints’ shear stiffness was simulated by either (i) assuming a perfect bond between glass and GFRP (i.e., neglecting the presence of the adhesive), or (ii) explicitly considering the adhesive, by means of using (ii.1) plane stress elements, or (ii.2) interface elements. For the beams analysed in this paper, the following material model for glass provided a good agreement with experimental results: Gf in the range of 3 to 300 N/m, h equal to the square root of the finite element area, fg,t = 50 MPa, linear softening diagram and β according to a power law. It was also shown that the hypothesis of perfect bond at the GFRP-glass interfaces allows for an accurate simulation of joints with high levels of interaction (epoxy), while calibrated interface elements are needed for joints with low level of interaction (polyurethane).The authors wish to acknowledge FCT, ICIST/CERIS and ISISE for funding the research, and companies SIKA, Guardian and ALTO for supplying the adhesives, the glass panes and the GFRP pultruded profiles used in the experiments. The first author also wishes to thank FCT for the financial support through his PhD scholarship SFRH/BD/80234/2011.ElsevierUniversidade do MinhoValarinho, LuísSena-Cruz, JoséCorreia, João R.Branco, Fernando A.20172017-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/43900engValarinho, L.; Sena-Cruz, J.; Correia, J.R.; Branco, F.A. (2017) “Numerical simulation of the flexural behaviour of composite glass-GFRP beams using smeared crack models.” Composites Part B, 110: 336–350.1359-836810.1016/j.compositesb.2016.10.035info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-21T12:54:25Zoai:repositorium.sdum.uminho.pt:1822/43900Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:53:59.602644Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Numerical simulation of the flexural behaviour of composite glass-GFRP beams using smeared crack models
title Numerical simulation of the flexural behaviour of composite glass-GFRP beams using smeared crack models
spellingShingle Numerical simulation of the flexural behaviour of composite glass-GFRP beams using smeared crack models
Valarinho, Luís
Glass-GFRP composite beams
Numerical analysis
Smeared crack approach
Adhesively bonded joints
Interface elements
Parametric study
Engenharia e Tecnologia::Engenharia Civil
Science & Technology
title_short Numerical simulation of the flexural behaviour of composite glass-GFRP beams using smeared crack models
title_full Numerical simulation of the flexural behaviour of composite glass-GFRP beams using smeared crack models
title_fullStr Numerical simulation of the flexural behaviour of composite glass-GFRP beams using smeared crack models
title_full_unstemmed Numerical simulation of the flexural behaviour of composite glass-GFRP beams using smeared crack models
title_sort Numerical simulation of the flexural behaviour of composite glass-GFRP beams using smeared crack models
author Valarinho, Luís
author_facet Valarinho, Luís
Sena-Cruz, José
Correia, João R.
Branco, Fernando A.
author_role author
author2 Sena-Cruz, José
Correia, João R.
Branco, Fernando A.
author2_role author
author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Valarinho, Luís
Sena-Cruz, José
Correia, João R.
Branco, Fernando A.
dc.subject.por.fl_str_mv Glass-GFRP composite beams
Numerical analysis
Smeared crack approach
Adhesively bonded joints
Interface elements
Parametric study
Engenharia e Tecnologia::Engenharia Civil
Science & Technology
topic Glass-GFRP composite beams
Numerical analysis
Smeared crack approach
Adhesively bonded joints
Interface elements
Parametric study
Engenharia e Tecnologia::Engenharia Civil
Science & Technology
description This paper presents a numerical study about the flexural behaviour of rectangular composite glass-GFRP beams, comprising annealed glass and GFRP pultruded profiles bonded with two different adhesives: (soft) polyurethane and (stiff) epoxy. The main objectives of this study were: (i) to fully characterize the non-linear behaviour of glass using the smeared crack approach; and (ii) to assess the applicability of different options to simulate adhesively bonded glass-GFRP joints. An extensive parametric study was developed to evaluate the influence of five parameters on the glass post-cracking non-linear behaviour: (i) glass fracture energy, Gf, (ii) crack band width, h, (iii) glass tensile strength, fg,t, (iv) shape of the tension-softening diagram, and (v) shear retention factor, β. The wide range of the joints’ shear stiffness was simulated by either (i) assuming a perfect bond between glass and GFRP (i.e., neglecting the presence of the adhesive), or (ii) explicitly considering the adhesive, by means of using (ii.1) plane stress elements, or (ii.2) interface elements. For the beams analysed in this paper, the following material model for glass provided a good agreement with experimental results: Gf in the range of 3 to 300 N/m, h equal to the square root of the finite element area, fg,t = 50 MPa, linear softening diagram and β according to a power law. It was also shown that the hypothesis of perfect bond at the GFRP-glass interfaces allows for an accurate simulation of joints with high levels of interaction (epoxy), while calibrated interface elements are needed for joints with low level of interaction (polyurethane).
publishDate 2017
dc.date.none.fl_str_mv 2017
2017-01-01T00:00:00Z
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://hdl.handle.net/1822/43900
url http://hdl.handle.net/1822/43900
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Valarinho, L.; Sena-Cruz, J.; Correia, J.R.; Branco, F.A. (2017) “Numerical simulation of the flexural behaviour of composite glass-GFRP beams using smeared crack models.” Composites Part B, 110: 336–350.
1359-8368
10.1016/j.compositesb.2016.10.035
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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