一种防弹玻璃抗大口径穿燃子弹侵彻能力研究  

Research on the capability of bullet-proof glass against large-caliber armor-piercing bullet penetration

作　　者：朱绍武 高旭东[1] 董晓亮 ZHU Shaowu;GAO Xudong;DONG Xiaoliang(School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China)

机构地区：[1]南京理工大学机械工程学院,南京210094

出　　处：《兵器装备工程学报》2023年第8期116-123,共8页Journal of Ordnance Equipment Engineering

摘　　要：为了研究一种防弹玻璃的抗侵彻机理,基于12.7、14.5 mm穿燃弹开展一种防弹玻璃的抗侵彻试验.通过分析侵彻后靶板的破环形貌,揭示了该型防弹玻璃对穿燃弹的抗侵彻机理.采用ANSYS/LS-DYNA软件对2种口径穿燃弹侵彻该防弹玻璃的过程进行数值模拟,对比分析装甲倾角对2种口径穿燃弹极限穿透速度的影响,以及穿燃弹初速度对剩余速度的影响,获得了该防弹玻璃的抗侵彻机理,并计算得到装甲防护系数.结果表明:弹丸初速度与极限穿透速度相同时,此时的弹道偏离角最大,随着弹丸初速度的增大,弹道偏离角减小;防弹玻璃PC背板的出孔裂缝长度与弹丸初速度成正比增长关系;弹丸初速度相同时,剩余速度随着穿燃弹口径的减小而减小,且随着初速度的增大,差值逐渐减小;通过工程算法得到该型防弹玻璃对12.7 mm穿燃弹的防护系数为0.74.On the purpose of studying the penetration resistance mechanism of a bullet-proof glass,this paper performs penetration experiments against this type of bullet-proof glass based on 12.7 mm and 14.5 mm armor-piercing bullets.ANSYS/LS-DYNA software is used to numerically simulate the penetration process of the two armor-piercing projectiles penetrating the bullet-proof glass.By studying the influence of the armor angle on the penetration velocity at the ballistic limit of the two projectiles and the influence of the initial velocity on the residual velocity,the anti-penetration mechanism of the bullet-proof glass is obtained,and the armor protection coefficient is calculated.The results indicate that,when the initial velocity of the projectile is the same as the ballistic limit,the deviation angle is the largest,and it decreases with the increase of the initial velocity.The length of the hole crack of the polycarbonate(PC)backplane is proportional to the initial velocity.When the initial velocity of the projectile is the same,the residual velocity decreases with the decrease of the projectile caliber,and the difference decreases with the increase of the initial velocity.Through the engineering equations,the protection cofficient of this bulletproof glass against the 12.7 mm armor-piercing projectile is 0.74.

关 键 词：防弹玻璃 穿燃弹 抗侵彻机理 弹道偏离角 极限穿透速度 剩余速度 

分 类 号：TJ410[兵器科学与技术—火炮、自动武器与弹药工程]