Abstract The ballistic performance of ultra-high molecular weight polyethylene (UHMWPE) laminated plates and UHMWPE encapsulated aluminum structures were numerically characterized. Full three-dimensional continuum model for each type of target was built, and the UHMWPE was simulated using a sub-laminate approach with a composite material model. Simulation results were compared with existing experimental measurements, with good agreement achieved both on final deformation morphology and ballistic data. Underlying penetration mechanisms of laminated plate were then explored, and the effect of interface strength was quantified. The ballistic improvement of UHMWPE encapsulated aluminum structures was mainly attributed to the stretching of lateral swathing laminates. However, the benefit of encapsulation decreased as the initial impact velocity or lateral dimensions of encapsulated structure were increased. These findings are helpful for designing lightweight UHMWPE composite structures with superior ballistic resistance.

中文翻译：

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uhmwpe 层压板和 uhmwpe 封装铝结构的弹道性能：数值模拟

摘要 数值表征了超高分子量聚乙烯（UHMWPE）层压板和UHMWPE封装铝结构的弹道性能。为每种类型的目标建立了完整的三维连续体模型，并使用复合材料模型的子层压方法对 UHMWPE 进行了模拟。模拟结果与现有的实验测量结果进行了比较，在最终变形形态和弹道数据上都取得了良好的一致性。然后探索了层压板的潜在渗透机制，并对界面强度的影响进行了量化。UHMWPE 封装铝结构的弹道改进主要归因于横向包覆层压板的拉伸。然而，封装的好处随着初始冲击速度或封装结构的横向尺寸的增加而降低。这些发现有助于设计具有优异防弹性能的轻质 UHMWPE 复合结构。