MESO-MECHANICAL PERFORMANCE OF UNIDIRECTIONAL FIBER COMPOSITES WITH MATRIX SHEAR BAND EFFECT

摘要

The commercial software ABAQUS was used to generate a 2D mechanical model (shown in Fig. 1) representative for a unidirectional fiber reinforced composite with a fiber breakage. For the entire model, the length (x-direction) was 15d, where d denotes the fiber diameter (10 μm). An area of equivalent composite part was introduced, for the purpose of accounting for the influence of the rest of the surrounding composite. To examine the effect of matrix softening under different inter-fiber spacings, seven fiber-fiber distances were modeled, namely, from 1d to 7d in increments of 1d.