Numerical modeling of uni-directional panels of ultra-high-molecular weight polyethylene (UHMWPE) has been a difficult challenge due to multi-scale nature of materials and intimate structure of the composite panel. In order to capture detailed ballistic responses of fibers and matrix in hard panel, a simplified Finite Element (FE) model of UHMWPE fiber-reinforced composite panel under impact has been developed in this study. To simulate the structure of laminates and reduce calculation cost, a panel model was represented by six plies oriented in the direction of 0°/90°with fiber bundles embedded in the matrix. Fiber bundles and matrix were both assumed as three-dimension solid continuum bodies. In this way, different ballistic responses of fibers and matrix at varied regions in the panel can be identified, such as failure appearance, stress and strain distributions on fiber bundles and matrix and so on. These findings are helpful for structure optimizing of UHMWPE hard panel to achieve improvement of ballistic performance and lightweight.

由于材料的多尺度性质和复合板的紧密结构，超高分子量聚乙烯 (UHMWPE) 单向板的数值建模一直是一项艰巨的挑战。为了捕捉硬板中纤维和基体的详细弹道响应，本研究开发了受冲击的 UHMWPE 纤维增强复合板的简化有限元 (FE) 模型。为了模拟层压板的结构并降低计算成本，面板模型由六层以 0°/90° 方向定向，纤维束嵌入矩阵中。纤维束和基体都被假定为三维立体连续体。通过这种方式，可以识别面板中不同区域的纤维和基体的不同弹道响应，例如故障外观、纤维束和基体上的应力和应变分布等。这些发现有助于UHMWPE硬板的结构优化，实现弹道性能的提高和轻量化。