本文简述了国内外防弹运钞车工业发展状况以及高速弹体冲击下纤维增强复合材料的研究进展。介绍了国内外运钞车所用防弹板的特性及改装车的性能。系统介绍了卵形弹体对金属面板/芳纶复合防弹板冲击破坏机理。结果表明,复合防弹板在高速弹体冲击下抗弹机理为:较高硬度金属面板使弹体变形、致偏,降低弹体对靶板的侵彻深度;高强度复合材料复合板的局部变形、分层和纤维拉伸断裂及纤维拔脱等进一步消耗弹体能量。从扫描电镜结果可知,纤维断裂方式主要为拉伸断裂。我们通过分析基体含量、靶板的面密度对V_(50)影响,提出SK75/改性弹性体复合板V_(50)的经验表达式。 This article describes the development of bulletproof armored car industry at home and abroad as well as the research progress of fiber reinforced composites under impact of high speed projectiles. The characteristics of bulletproof plates used in armored vehicles at home and abroad and the performance of modified vehicles are introduced. The paper introduces the oval projectile on the metal panel / aramid composite impact plate impact damage mechanism. The results show that the mechanism of the ballistic resistance of the composite ballistic plate under high-speed projectile impact is that the deformation of the projectile is caused by the higher hardness of the metal projectile and the penetration depth of the projectile to the target plate is reduced. The local deformation of the composite plate , Stratification and fiber tensile fracture and fiber pull and further consumption of projectile energy. Scanning electron microscopy results show that the main mode of fiber fracture tensile fracture. By analyzing the influence of the matrix content and the areal density of the target plate on the V_ (50), we present the empirical expression of the V_ (50) SK75 / modified elastomer composite plate.