Compression after Impact Modeling of Damage Tolerant Composite Laminates
Compression after Impact Modeling of Damage Tolerant Composite Laminates
复制标题
耐损伤复合材料层压板冲击建模后的压缩
DOI：
10.2514/6.2010-2868
复制
发表时间：
2010
影响因子：
2.2
通讯作者：
R. Butler
中科院分区：
文献类型：
--
作者：
N. Baker;R. Butler
已有的冲击后压缩(CAI)模型被用作优化程序中的适应度函数，以产生损伤容限优化复合材料铺层。这种层合板在计算机辅助教学强度实验中进行了测试，同时进行了基线准各向同性铺层。虽然观察到计算机辅助测试强度提高了13%，但分析模型显示高估了损伤容限优化层合板的强度。结果发现，优化过程消除了由第I型屈曲引起的局部失效，而受冲击的层合板则通过整体驱动的面内效应失效。
An existing compression after impact (CAI) model was used as the fitness function in an optimization routine to produce a damage tolerance optimized composite layup. This laminate was tested in a CAI strength experiment, alongside a baseline quasi-isotropic layup. Although a 13% improvement in CAI strength was observed, the analytical model was shown to overpredict the strength of the damage tolerance optimized laminate. It was found that the optimization process eliminated localized failure due to Mode-I buckling-induced propagation, and that the impacted laminate failed instead through globally driven, in-plane effects.