Numerical simulations of woven composite materials with voxel-FE models
Résumé
A procedure for the determination of homogenized elastic moduli from a voxel-FE description of the material architecture is presented. The voxel-FE approach enables the automated and robust generation of Representative Elementary Volumes for a wide range of heterogeneous materials, in particular woven composites. Thanks to the regularity of boundary meshes in voxel models, the application of boundary conditions (periodic, kinematic uniform, static uniform and mixed-uniform) as well as the determination of volumic averages for stresses and strains can be both performed easily and efficiently. The convergence of voxel-FE results and the influence of boundary conditions are studied for two typical problems.