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A comparison study on the impact failure behavior of laminate and woven composites with consideration of strain rate effect and impact attitude
Thin-Walled Structures ( IF 6.4 ) Pub Date : 2021-04-27 , DOI: 10.1016/j.tws.2021.107843
Chunlin Du , Huanfang Wang , Zhenqiang Zhao , Lu Han , Chao Zhang

The anisotropy and heterogeneity of carbon fiber–reinforced polymer (CFRP) composites contribute to their complex failure characteristics, posing challenges for predicting their impact failure behavior. In this study, high-fidelity finite element models are established to predict the performance of laminated and woven composite panels impacted by a metallic projectile, with consideration of strain-rate effect and impact attitudes. The numerical models are experimentally validated and are applied to investigate the impact resistance of both composites under various impact conditions. The results indicate that the maximum ratio of delamination of laminated panel is about 0.4, which is greater than 0.2 of the woven panel. Woven panels can better withstand impact damage, while laminates are more prone to delamination under high-speed impacts loads.



中文翻译:

考虑应变速率效应和冲击姿态的层合和机织复合材料冲击破坏行为的比较研究

碳纤维增强聚合物(CFRP)复合材料的各向异性和非均质性导致其复杂的破坏特性,对预测其冲击破坏行为提出了挑战。在这项研究中,建立高保真有限元模型来预测层压板和编织复合板的性能,并考虑到应变率效应和冲击姿态,这些复合板会受到金属弹丸的影响。数值模型经过实验验证,并用于研究两种复合材料在各种冲击条件下的耐冲击性。结果表明,层压板的最大分层比约为0.4,大于机织板的0.2。机织面板可以更好地承受冲击破坏,而层压板在高速冲击载荷下更容易分层。

更新日期:2021-04-28
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