针对采用格栅结构的某无人机机翼,研究了机翼格栅结构在承受低速冲击下结构材料的损伤特性；在ABAQUS软件中建立了冲击损伤过程有限元模型,采用Hashin-Rotem应变失效准则和Camanho参数退化方式,对无穿透破坏前提下的单侧带蒙皮格栅结构进行了冲击仿真实验.研究了针对不同格栅结构构型、不同冲击位置、不同冲击能量等情况下的损伤特性.结果表明:对结构不同位置进行冲击时,结构损伤类型、面积、扩展特性等都有极大的不同,而且复合材料结构不同铺层的损伤特性也有很大差异；验证了格栅结构对损伤扩散具有良好的限制能力,表明格栅结构具有很好的抗损伤能力.
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