Contribuições ao estudo de microestruturas reforçadas
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Data
2018-12
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Editor
Ricardo Prado Abreu Reis
Resumo
This paper deals with the analysis of the microstructure of metal matrix composites (MMC) and its application in Structural Engineering. For this reason, it is considered the dissipative processes related to plasticity, which occurs in the matrix, and the phase debonding that occurs in the matrix/inclusion interface region, where the influence of such processes on the macroscopic response of the material will be investigated. For the numerical simulations of the MMC structural behavior, the von Mises model will be used in the modeling of the matrix and a cohesive fracture model will be used in the simulation of the phase debonding process. Inclusion will be considered elastic with high rigidity. However, the dissipative processes that occur in the microstructure and that affect the macromechanical behavior of the material will be analyzed through a microscale modeling using a homogenization process based on the concept of Representative Volume Element (RVE) and the Finite Element Method (FEM). The strain and stress are volumetric average of the respective microscopic fields on the EVR. The major goal is to verify the potentialities and limitations of the use of the proposed modeling for future improvements of metal matrix composites to apply in engineering.
Descrição
Palavras-chave
Compósito de matriz metálica, Plasticidade, Elemento de volume representativo, Microestrutura, Método dos elementos finitos, Metal matrix composite, Plasticity, Representative volume element, Microstructure, Finite element method
Citação
ANDRADE, Paula Viana Queiroz; PITUBA, José Julio de Cerqueira. Contribuições ao estudo de microestruturas reforçadas. Revista Eletrônica de Engenharia Civil, Goiânia, v. 14, n. 2, p. 28-45, jul./dez. 2018. Disponível em: <https://www.revistas.ufg.br/reec/article/view/46987/pdf>.