Micromechanical Modelling of Non-Homogenous Materials by Meshless Methods

Nelson Muthu; Brian Falzon; Surjya Maiti; Wenyi Yan

Micromechanical Modelling of Non-Homogenous Materials by Meshless Methods

Nelson Muthu, Brian Falzon, Surjya Maiti, Wenyi Yan

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Abstract

A detailed study of bi-material composites, using meshless methods (MMs), is presented in this paper. Firstly, representative volume elements (RVEs) for different bi-material combinations are analysed by the element-free Galerkin (EFG) method in order to confirm the effective properties of heterogeneous material through homogenization. The results are shown to be in good agreement with experimental results and those obtained using the finite element method (FEM) which required a higher node density. Secondly, a functionally graded material (FGM), with a crack, is analysed using the EFG method. This investigation was motivated by the possibility of replacing the distinct fibrematrix interface with a FGM interface. Finally, an illustrative example showing crack propagation, in a two-dimension micro-scale model of a SiC/Al composite is presented.

Original language	English
Number of pages	12
Publication status	Published - 24 Jul 2015
Event	ICCM20 20th International Conference on Composite Materials - Copenhagen, Denmark Duration: 19 Jul 2015 → 24 Jul 2015

Conference

Conference	ICCM20 20th International Conference on Composite Materials
Country	Denmark
City	Copenhagen
Period	19/07/2015 → 24/07/2015

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MICROMECHANICAL MODELLING OF NON-HOMOGENOUS MATERIALS BY MESHLESS METHODS
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title = "Micromechanical Modelling of Non-Homogenous Materials by Meshless Methods",

abstract = "A detailed study of bi-material composites, using meshless methods (MMs), is presented in this paper. Firstly, representative volume elements (RVEs) for different bi-material combinations are analysed by the element-free Galerkin (EFG) method in order to confirm the effective properties of heterogeneous material through homogenization. The results are shown to be in good agreement with experimental results and those obtained using the finite element method (FEM) which required a higher node density. Secondly, a functionally graded material (FGM), with a crack, is analysed using the EFG method. This investigation was motivated by the possibility of replacing the distinct fibrematrix interface with a FGM interface. Finally, an illustrative example showing crack propagation, in a two-dimension micro-scale model of a SiC/Al composite is presented. ",

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AU - Muthu, Nelson

AU - Falzon, Brian

AU - Maiti, Surjya

AU - Yan, Wenyi

PY - 2015/7/24

Y1 - 2015/7/24

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AB - A detailed study of bi-material composites, using meshless methods (MMs), is presented in this paper. Firstly, representative volume elements (RVEs) for different bi-material combinations are analysed by the element-free Galerkin (EFG) method in order to confirm the effective properties of heterogeneous material through homogenization. The results are shown to be in good agreement with experimental results and those obtained using the finite element method (FEM) which required a higher node density. Secondly, a functionally graded material (FGM), with a crack, is analysed using the EFG method. This investigation was motivated by the possibility of replacing the distinct fibrematrix interface with a FGM interface. Finally, an illustrative example showing crack propagation, in a two-dimension micro-scale model of a SiC/Al composite is presented.

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Y2 - 19 July 2015 through 24 July 2015

ER -