汽车涂层样本单颗粒冲击破坏仿真分析

研究汽车涂层在冲击载荷下的破坏现象，对于预测涂层抗石击性能以及指导涂层结构设计和优化具有重要意义。建立了汽车涂层样本单颗粒冲击破坏有限元模型，使用自主开发的显式有限元求解器模拟汽车涂层冲击破坏过程。涂层层内破坏、基底与涂层界面分离破坏模式的仿真结果与试验结果的良好一致性，验证了仿真分析方法的有效性，揭示了涂层在冲击载荷下的层内破坏与界面分离破坏的失效机理。

Simulation Analysis of Single-Particle Impact Damage in Automotive Coating Samples

Studying the impact-induced failure phenomenon of automotive coatings is of great significance for predicting damage and guiding the structural design and optimization of the coatings. A finite elementmodel for the single-particle impact failure of automotive coating samples is established, and this model is solved by using an in-house explicit finite element solver, FTW-GPU. The predicted failure patterns of in-ply failure and interface delamination of the automotive coatings are in good agreement with the experimental outcomes, which verifies the effectiveness of this numerical method and reveals the failure mechanisms of in-ply failure and interface delamination in coatings under impact load.