Abstract Dynamic response mechanism of CFRP (Carbon Fiber Reinforced Polymer) panel under high-speed ice ball impact was challenging to elucidate due to inherent heterogeneity and anisotropy properties. This further leads to difficulties in theoretical prediction of the damage threshold. Simulation modelling of CFRP panel subjected to high-speed ice ball impact was conducted in this study. Through coupling SPH (Smoothed Particle Hydrodynamics) and FEM (Finite Element Method), the simulation has captured the deformation and damage of the CFRP panel and ice ball. A damage threshold prediction model of CFRP was then proposed based on the mechanism analysis of the dynamic deformation and delamination. The traditional prediction of CFRP impact damage threshold, that is, parametric studies on the damage threshold of CFRP panel influenced by different impact speed, ice ball diameter and panel thickness was performed. Finally, the results show that the CFRP damage threshold law obtained from parameterized simulation matches the previous experimental results, and a conservative damage threshold can be predicted from the proposed theoretical model. The proposed theoretical model can contribute to predicting the damage threshold of CFRP panels subject to ice ball impacts at low cost.

中文翻译：

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基于分层机理的冰雹冲击CFRP板损伤阈值预测模型

摘要 CFRP（碳纤维增强聚合物）板在高速冰球冲击下的动态响应机制由于其固有的非均质性和各向异性特性而难以阐明。这进一步导致损伤阈值的理论预测困难。本研究对高速冰球冲击下的 CFRP 板进行仿真建模。通过耦合SPH（Smoothed Particle Hydrodynamics）和FEM（有限元法），模拟捕捉到了CFRP面板和冰球的变形和损坏。然后基于CFRP的动态变形和分层机理分析，提出了CFRP的损伤阈值预测模型。CFRP冲击损伤阈值的传统预测，即 对不同冲击速度、冰球直径和板厚对CFRP板损伤阈值的影响进行了参数研究。最后，结果表明，参数化仿真得到的 CFRP 损伤阈值规律与之前的实验结果相匹配，并且可以从所提出的理论模型中预测出保守的损伤阈值。所提出的理论模型有助于以低成本预测受到冰球冲击的 CFRP 板的损坏阈值。