Modeling the effect of material heterogeneity on the thermo-mechanical behavior of concrete using mesoscale and stochastic field approaches

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorTechnical University of Catalonia (BarcelonaTech)-
Autor(es): dc.contributorCIMNE – Centre Internacional de Mètodes Numèrics en Enginyeria-
Autor(es): dc.creatorGimenes, Marcela-
Autor(es): dc.creatorCleto, Pedro Rogério-
Autor(es): dc.creatorRodrigues, Eduardo Alexandre-
Autor(es): dc.creatorLloberas-Valls, Oriol-
Autor(es): dc.creatorManzoli, Osvaldo Luís-
Data de aceite: dc.date.accessioned2025-08-21T15:17:14Z-
Data de disponibilização: dc.date.available2025-08-21T15:17:14Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2024-10-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.tafmec.2024.104622-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/306403-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/306403-
Descrição: dc.descriptionThe adverse impact of high temperatures on concrete is a well-recognized issue that can lead to significant mechanical deterioration and structural integrity loss. Factors such as aggregate type, cement composition, temperature, duration of exposure, and moisture content can substantially influence the fire resistance of concrete. To simulate and better understand the effects arising from the heterogeneity of concrete in a fire situation, a mesoscale approach is proposed, using the Mesh Fragmentation Technique (MFT) to assess the complex thermo-mechanical behavior of concrete. The MFT introduces high aspect ratio interface elements to model crack propagation and interfacial transition zones by means of an appropriated tensile damage constitutive law. In this extended framework, a fully-coupled thermo-mechanical model is proposed. The modeling approach includes considerations of both macroscopic and mesoscopic scales, in which the coarse aggregate, mortar matrix and interfacial transition zones are represented. Besides, a stochastic distribution is assumed for the material properties to account for the lower scale heterogeneity. The main novelty proposed in this study consists in the synergy of mesoscale and stochastic approaches that are herein combined to model the effect of heterogeneity on the concurrent macro-mesoscale thermo-mechanical behavior of concrete. To validate the numerical model's capabilities in capturing thermally induced cracks, benchmark cases and a simulation of a bending beam exposed to elevated temperatures are presented. The results demonstrate the potential of the proposed approach in predicting the behavior of concrete subjected to thermal loading and the role played by heterogeneity in the thermally induced cracking.-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionDepartment of Civil and Environmental Engineering São Paulo State University (UNESP), Av. Eng. Luiz Edmundo Carrijo Coube 14-01-
Descrição: dc.descriptionE.T.S. d'Enginyeria de Camins Canals i Ports Technical University of Catalonia (BarcelonaTech), Campus Nord UPC, Mòdul C-1, c/ Jordi Girona 1-3-
Descrição: dc.descriptionCIMNE – Centre Internacional de Mètodes Numèrics en Enginyeria Campus Nord UPC, Mòdul C-1, c/ Jordi Girona 1-3-
Descrição: dc.descriptionDepartment of Civil and Environmental Engineering São Paulo State University (UNESP), Av. Eng. Luiz Edmundo Carrijo Coube 14-01-
Descrição: dc.descriptionFAPESP: 2020/16789-6-
Descrição: dc.descriptionCNPq: 310223/2020-2-
Idioma: dc.languageen-
Relação: dc.relationTheoretical and Applied Fracture Mechanics-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectHigh aspect ratio interface element-
Palavras-chave: dc.subjectMesh fragmentation technique-
Palavras-chave: dc.subjectMesoscale model-
Palavras-chave: dc.subjectStochastic properties-
Palavras-chave: dc.subjectThermo-mechanical coupling-
Título: dc.titleModeling the effect of material heterogeneity on the thermo-mechanical behavior of concrete using mesoscale and stochastic field approaches-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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