【摘要】 研究复合材料Ω形加筋壁板结构在不同能量及位置的低速冲击作用下的渐进损伤及其冲击后剩余强度具有重要意义。通过编写VUMAT子程序,将选择的三维Hashin失效准则及刚度退化模式加入渐进损伤模型中并与文献中试验进行对照，进一步研究不同冲击位置及不同冲击能量对于模型冲击载荷、渐进损伤及剩余强度的影响。结果表明，在加强筋中央位置处冲击对结构剩余强度影响最大；相同冲击位置处，冲击能量越大，结构损伤越严重，剩余强度越小。这为复合材料Ω形加筋壁板的结构设计提供了参考。更多还原

【Abstract】 It is of great significance to study the progressive damage and residual strength of composite omega stiffened panel structures under low-speed impact with different energy and position. By writing VUMAT subroutine,the selected 3D Hashin failure criterion and stiffness degradation mode are added to the progressive damage model and compared with the experiments in the literature. The effects of different impact positions and different impact energies on the impact load, progressive damage and residual strength of the model are further studied. The results show that the impact at the center of the reinforcement has the greatest effect on the residual strength of the structure.更多还原