M. Palizvan and M. T. Abadi and M. H. Sadr
Micromechanical Modeling of FiberMatrix Debonding in Unidirectional Composites
524 - 530
2018
12
10
International Journal of Materials and Metallurgical Engineering
https://publications.waset.org/pdf/10009636
https://publications.waset.org/vol/142
World Academy of Science, Engineering and Technology
Due to variations in damage mechanisms in the microscale, the behavior of fiberreinforced composites is nonlinear and difficult to model. To make use of computational advantages, homogenization method is applied to the microscale model in order to minimize the cost at the expense of detail of local microscale phenomena. In this paper, the effective stiffness is calculated using the homogenization of nonlinear behavior of a composite representative volume element (RVE) containing fibermatrix debonding. The damage modes for the RVE are considered by using cohesive elements and contacts for the cohesive behavior of the interface between fiber and matrix. To predict more realistic responses of composite materials, different random distributions of fibers are proposed besides square and hexagonal arrays. It was shown that in some cases, there is quite different damage behavior in different fiber distributions. A comprehensive comparison has been made between different graphs.
Open Science Index 142, 2018