Simulating the impact damage of laminated glass considering mixed mode delamination using FEM/DEM
Simulating the impact damage of laminated glass considering mixed mode delamination using FEM/DEM
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DOI：
10.1016/j.compstruct.2018.05.127
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发表时间：
2018-05
影响因子：
6.3
通讯作者：
Xing-er Wang;Jian Yang;Feiliang Wang;Qing-feng Liu;Han Xu
中科院分区：
文献类型：
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作者：
Xing-er Wang;Jian Yang;Feiliang Wang;Qing-feng Liu;Han Xu
本文提出了一种用有限元-离散元相结合的方法来模拟夹层玻璃冲击破坏的方法。它包括玻璃的离散裂纹模型，代表PVB夹层超弹性的Mooney-Rivlin模型。改进的Xu和Needleman模型适用于混合型界面本构关系，特别是描述了不可逆卸载的损伤-塑性组合行为，从而可以预测层间粘结破坏。对几种夹层玻璃组件的模拟结果与实验结果的比较表明，该界面模型能够很好地再现典型的分层行为。算例中的应力波传播和层间撕裂的特征可以令人满意地再现。文中还讨论了离散裂纹模型在模拟强化玻璃冲击损伤时的缺陷和由此产生的误差。
This paper presents an approach for modelling the impact breakage of the laminated glass (LG) using the combined finite-discrete element method (FEM/DEM). It encompasses the discrete crack model for glass, the Mooney-Rivlin model to represent the hyperelasticity of the PVB interlayers. The improved Xu and Needleman model is adapted to serve as the mixed-mode interfacial constitutive law, in particular, describing the combined damage-plasticity behaviour for irreversible unloading and thus can predict the interlaminar cohesion failure. The comparison between the simulation and the experimental results for several laminated glass make-ups shows that this interfacial model can adequately reproduce the typical delamination behaviour. The characteristics of the stress wave propagation and the interlayer tearing in the example cases can be satisfactorily reproduced. The shortcoming of the discrete crack model in modelling the impact damage of strengthened glass and the resulting errors are discussed as well.