查看文章

This contribution presents an approach to generate unit-cell models of 3D orthogonal woven non-crimp fabric composites with the ability to incorporate cross-section variations in the weft and binder yarns. The approach starts from an initial loose-state configuration of the fiber-bundles, in which each fiber-bundle is represented by a single discretised line. The discretised lines are shaped in a step-wise generation process by geometrical operations. During the generation procedure, the surface weft yarns and the binder yarns are transformed into a boundary- or inner-line configuration, respectively, to account for their cross-section variation in subsequent steps. The fiber volume fraction and fiber direction to be used subsequently in simulations are modelled on cross-sections in a post-processing step. The shape of the surface weft yarn cross-section and binder yarn cross-sections and centerline for different binder …