In the current study, seven types of laminated composites are designed to replace the existing 616 steel plate with 5 mm thickness for the bulletproof. An explicit dynamic finite element model is developed to simulate the bullet penetration process using ANSYS Workbench software. And a specific bulletproof coefficient, which considers the ultimate bulletproof speed and area density of the target plate, is proposed and calculated, and the overall bulletproof performances of the composites and 616 steel plate are compared. The specific bulletproof coefficients of seven composites are increased by 12.53%, 14.77%, 13.28%, 12.20%, 19.59%, 23.81%, and 20.67%, respectively. The type F is the optimal type among all the structures. Eventually, the optimal composites are validated under different bullet hit positions and double-bullet situations. Results show that all the seven composites and 616 steel with 5 mm thickness can effectively defend 5.62 mm bullets, and no damage or failure is observed. Although the impact stiffness and ultimate bulletproof speed are both decreased, the area density and density are also significantly decreased.

在目前的研究中，设计了七种类型的层压复合材料来代替现有的 5 毫米厚的 616 钢板用于防弹。使用 ANSYS Workbench 软件开发了一个显式动态有限元模型来模拟子弹穿透过程。并提出并计算出综合考虑目标板极限防弹速度和面积密度的特定防弹系数，比较了复合材料与616钢板的整体防弹性能。七种复合材料的具体防弹系数分别提高了12.53%、14.77%、13.28%、12.20%、19.59%、23.81%和20.67%。F 型是所有结构中最优的类型。最终，在不同子弹击中位置和双子弹情况下验证最佳复合材料。结果表明，7种复合材料和5mm厚的616钢均能有效防御5.62mm子弹，未发现损坏或失效。虽然冲击刚度和极限防弹速度均有所下降，但面密度和密度也明显下降。