Analysis of the constitutive response of heterogeneous materials by the boundary element method, considering different RVE microstructures

Página do item simplificado
dc.contributor.authorCrozariol, Luís Henrique De Rezende [UNESP]
dc.contributor.authorFernandes, Gabriela Rezende
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade Federal de Goiás (UFG)
dc.date.accessioned2020-12-12T01:21:19Z
dc.date.available2020-12-12T01:21:19Z
dc.date.issued2020-01-01
dc.description.abstractNumerical analyses to model the constitutive response of heterogeneous materials by a Boundary Element Formulation, developed in the context of a RVE-based multi-scale theory, are performed. In this case, the material microstructure is denoted as RVE (Representative Volume Element) and it is modelled by a zoned plate, where each sub-region represents the matrix or an inclusion. Besides, voids can also be defined inside the matrix to model the microstructure of porous materials. The dissipative phenomenon in the RVE is taken into account by considering an initial forces field which represents the dissipative forces. After imposing a constant strain vector to the RVE boundary, its homogenized constitutive response must be obtained. For that, the RVE equilibrium problem must be solved first, which is defined in terms of displacements fluctuations. In the numerical examples different microstructures are adopted to show how the RVE constitutive response changes when different volume fractions of inclusions or voids are considered. Besides, the constitutive re-sponse of a RVE where five inclusions are disposed aleatory is evaluated when different strains vectors are imposed to its boundary. The homogenized values for the stress vector and the constitutive tensor are compared to the formulation developed by the Finite Element Method in order to validate the Boundary Element Formulation.en
dc.description.affiliationDepartamento de Engenharia Civil Universidade Estadual Paulista (UNESP), Al. Bahia, 550
dc.description.affiliationDepartamento de Engenharia Civil Universidade Federal de Goiás (UFG) - Regional Catalão, Av. Dr. Lamartine Pinto de Avelar, 1120, Setor Universitário
dc.description.affiliationUnespDepartamento de Engenharia Civil Universidade Estadual Paulista (UNESP), Al. Bahia, 550
dc.identifierhttp://dx.doi.org/10.1590/s1517-707620200001.0875
dc.identifier.citationRevista Materia, v. 25, n. 1, 2020.
dc.identifier.doi10.1590/s1517-707620200001.0875
dc.identifier.fileS1517-70762020000100305.pdf
dc.identifier.issn1517-7076
dc.identifier.scieloS1517-70762020000100305
dc.identifier.scopus2-s2.0-85083693676
dc.identifier.urihttp://hdl.handle.net/11449/198759
dc.language.isopor
dc.relation.ispartofRevista Materia
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectBoundary elements
dc.subjectHomogenization techniques
dc.subjectMulti-scale modeling
dc.subjectRVE
dc.subjectTwo-dimensional problem
dc.titleAnalysis of the constitutive response of heterogeneous materials by the boundary element method, considering different RVE microstructuresen
dc.titleAnálise da resposta constitutiva de materiais heterogêneos pelo método dos elementos de contorno, considerando-se diferentes microestruturas para o EVRpt
dc.typeArtigo
unesp.author.orcid0000-0002-0366-3403[1]
unesp.author.orcid0000-0001-5689-868X[2]

Arquivos

Pacote Original
Agora exibindo 1 - 1 de 1
Imagem de Miniatura
Nome:
S1517-70762020000100305.pdf
Tamanho:
1.17 MB
Formato:
Adobe Portable Document Format
Baixar

Coleções

Artigos