Abstract：In this work, a multi-scale approach has been proposed to investigate the low-velocity impact damage of plain woven composites. First, the microscale representative volume element (RVE) was established to predict the effective properties of E-glass yarns. Second, the mesoscale RVE of the plain woven composites was constructed and the damage evolution of the mesoscale RVE was analyzed based on a continuous damage mechanics (CDM) model and the 3D Hashin failure criterion. Finally, a new local homogenization method based on the volume averaging method was proposed, which transforms the mesoscale model into the equivalent cross ply laminate (ECPL) model with 0° and 90° layers. The ECPL model was extended to a macroscale model, and low-velocity impact simulations have been performed to investigate the damage behaviors of plain woven composites. The force-displacement and energy curves of plain woven composites with impact energy of 30 J were obtained and compared with experimental results in literature. The results show that the numerical simulation peak force is 5 621 N, the deviation from the experimental value is 1.3%; Moreover, the failure modes within laminates are mainly fiber and matrix tensile damages and delamination. The numerical results of the low-velocity impact model based on the ECPL approach are in good agreement with the experimental results, which validates the local homogenization approach and the multi-scale modeling strategy.
王涛，侯玉亮，铁瑛，李成. 基于ECPL模型的平纹机织复合材料低速冲击多尺度模拟[J]. 振动与冲击, 2020, 39(20): 295-304.
WANG Tao, HOU Yuliang, TIE Ying, LI Cheng. Multi-scale simulation of low-velocity impact on plain woven composites based on an ECPL model. JOURNAL OF VIBRATION AND SHOCK, 2020, 39(20): 295-304.
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