A new basic creep model coupled with a thermomechanical model for the numerical simulation of the time-dependent behaviour of concrete structures

Detalhes bibliográficos
Autor(a) principal: Valente, Tiago S.
Data de Publicação: 2019
Outros Autores: Gouveia, António Ventura, Barros, Joaquim A. O.
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/1822/72170
Resumo: This work is dedicated to the description of a new basic creep model that was developed and integrated in a thermo-mechanical model already available in a FEM-based software – FEMIX. The basic creep model is based on the Dirichlet series expansion of the Double Power Law (DPL) approach, and is capable of predicting the aging creep behaviour of cement based materials (CBM) since early ages. Based on experimental results, the model resorts to a non-linear least square datafitting operation to various loading ages creep compliance curves, and determines a set of model defining coefficients to simulate the aging viscoelastic properties of any CBM. This model was integrated with a thermo-mechanical model capable of simulating maturation, shrinkage and cracking phenomena of CBM. The good predictive performance of the implemented model is appraised by simulating experimental tests at material and structural scale.
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spelling A new basic creep model coupled with a thermomechanical model for the numerical simulation of the time-dependent behaviour of concrete structuresFinite element methodConcrete maturationShrinkageCreepCracked concreteEngenharia e Tecnologia::Engenharia CivilThis work is dedicated to the description of a new basic creep model that was developed and integrated in a thermo-mechanical model already available in a FEM-based software – FEMIX. The basic creep model is based on the Dirichlet series expansion of the Double Power Law (DPL) approach, and is capable of predicting the aging creep behaviour of cement based materials (CBM) since early ages. Based on experimental results, the model resorts to a non-linear least square datafitting operation to various loading ages creep compliance curves, and determines a set of model defining coefficients to simulate the aging viscoelastic properties of any CBM. This model was integrated with a thermo-mechanical model capable of simulating maturation, shrinkage and cracking phenomena of CBM. The good predictive performance of the implemented model is appraised by simulating experimental tests at material and structural scale.The authors acknowledge the support provided by FEDER funds through the Operational Programme for Competitiveness and Internationalization - COMPETE and by national funds through FCT (Portuguese Foundation for Science and Technology) within the scope of the project InOlicTower, POCI-01- 0145-FEDER-016905 (PTDC/ECMEST/2635/2014). The first Author would like to acknowledge the grant SFRH/BDE/96381/2013 co-funded by CiviTest and by FCT.Universidade do MinhoValente, Tiago S.Gouveia, António VenturaBarros, Joaquim A. O.20192019-01-01T00:00:00Zconference paperinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/1822/72170enginfo: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:RCAAP2024-05-11T06:07:20Zoai:repositorium.sdum.uminho.pt:1822/72170Portal AgregadorONGhttps://www.rcaap.pt/oai/openairemluisa.alvim@gmail.comopendoar:71602024-05-11T06:07:20Repositório 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 A new basic creep model coupled with a thermomechanical model for the numerical simulation of the time-dependent behaviour of concrete structures
title A new basic creep model coupled with a thermomechanical model for the numerical simulation of the time-dependent behaviour of concrete structures
spellingShingle A new basic creep model coupled with a thermomechanical model for the numerical simulation of the time-dependent behaviour of concrete structures
Valente, Tiago S.
Finite element method
Concrete maturation
Shrinkage
Creep
Cracked concrete
Engenharia e Tecnologia::Engenharia Civil
title_short A new basic creep model coupled with a thermomechanical model for the numerical simulation of the time-dependent behaviour of concrete structures
title_full A new basic creep model coupled with a thermomechanical model for the numerical simulation of the time-dependent behaviour of concrete structures
title_fullStr A new basic creep model coupled with a thermomechanical model for the numerical simulation of the time-dependent behaviour of concrete structures
title_full_unstemmed A new basic creep model coupled with a thermomechanical model for the numerical simulation of the time-dependent behaviour of concrete structures
title_sort A new basic creep model coupled with a thermomechanical model for the numerical simulation of the time-dependent behaviour of concrete structures
author Valente, Tiago S.
author_facet Valente, Tiago S.
Gouveia, António Ventura
Barros, Joaquim A. O.
author_role author
author2 Gouveia, António Ventura
Barros, Joaquim A. O.
author2_role author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Valente, Tiago S.
Gouveia, António Ventura
Barros, Joaquim A. O.
dc.subject.por.fl_str_mv Finite element method
Concrete maturation
Shrinkage
Creep
Cracked concrete
Engenharia e Tecnologia::Engenharia Civil
topic Finite element method
Concrete maturation
Shrinkage
Creep
Cracked concrete
Engenharia e Tecnologia::Engenharia Civil
description This work is dedicated to the description of a new basic creep model that was developed and integrated in a thermo-mechanical model already available in a FEM-based software – FEMIX. The basic creep model is based on the Dirichlet series expansion of the Double Power Law (DPL) approach, and is capable of predicting the aging creep behaviour of cement based materials (CBM) since early ages. Based on experimental results, the model resorts to a non-linear least square datafitting operation to various loading ages creep compliance curves, and determines a set of model defining coefficients to simulate the aging viscoelastic properties of any CBM. This model was integrated with a thermo-mechanical model capable of simulating maturation, shrinkage and cracking phenomena of CBM. The good predictive performance of the implemented model is appraised by simulating experimental tests at material and structural scale.
publishDate 2019
dc.date.none.fl_str_mv 2019
2019-01-01T00:00:00Z
dc.type.driver.fl_str_mv conference paper
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/1822/72170
url http://hdl.handle.net/1822/72170
dc.language.iso.fl_str_mv eng
language eng
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.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
repository.mail.fl_str_mv mluisa.alvim@gmail.com
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