Abstract
A study is conducted with the aim of developing meso-scale voxel-based model for evaluating the voxel size effect of 3D angle-interlock woven composites subjected to axial tensile loading. Five different mesh size (0.06 mm, 0.08 mm, 0.10 mm, 0.12 mm and 0.16 mm) are chosen for the analysis of the elastic behaviors, global stress-strain curves, local stress distribution and progressive damage process. The results show that the mesh size has little influence on the effective elastic properties of 3D angle-interlock woven composites as long as the fiber volume fraction is reached. Also, the simulated displacement isolines correlate well with the experimental image, regardless the voxel size. Furthermore, the voxel sizes have an important effect on the damage behavior. Based on the statistical distribution, it is found that when the damage variable is higher, the degree of the damage ratio’s dependence on voxel size is reduced.
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