Abstract：A representative volume element (RVE)-based micromechanical damage model by using the nonlinear finite element method are presented to predict the damage propagation and strength of 3D five-directional braided composites, combined with the averaging methods. By adopting the software ABAQUS, the progressive damage of 3D five-directional braided composites with typical braiding angles were studied subjected to tensile loading.The macroscopic stress-strain curves and ultimate strength of the samples were obtained. Numerical results verify the effectiveness of the model. Effects of braiding angle on the mechanical behavior of 3D five-directional braided composites were discussed in detail. Some valuable conclusions are drawn herein.
2010, Vol. 31 
