大质量钨合金动能块高速侵彻超高强度钢靶作用特性  

Characteristics of high-mass tungsten alloy kinetic projectile penetrating ultra-high strength steel targets at high velocity

作　　者：冯晓伟[1] 李俊承[1] 卢永刚[1] 王守乾[1] 卢正操 刘闯[2] 傅丹 FENG XiaoWei;LI Juncheng;LU Yonggang;WANG Shouqian;LU Zhengcao;LIU Chuang;FU Dan(Institute of Systems Engineering,China Academy of Engineering Physics,Mianyang 621999,Sichuan,China;School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing 210094,Jiangsu,China;Project Management Center of PLA Rocket Force Equipment Department,Beijing 100085,China)

机构地区：[1]中国工程物理研究院总体工程研究所,四川绵阳621999 [2]南京理工大学机械工程学院,江苏南京210094 [3]火箭军装备部装备项目管理中心,北京100085

出　　处：《爆炸与冲击》2023年第9期167-178,共12页Explosion and Shock Waves

基　　金：国家自然科学基金(12202424,12141202)。

摘　　要：为研究超高强度钢靶抗大质量钨合金动能块的侵彻性能及破坏特性,基于弹道炮开展了215 g圆柱形钨合金动能块高速侵彻半无限超高强度G50钢靶和低强度45钢靶试验,获得了不同速度侵彻下两种钢靶的侵彻深度和成坑体积。试验表明,不同于低强度钢靶的近似圆柱体成坑特性,钨合金动能块侵彻超高强度钢靶时,在靶板内形成了类锥形弹坑,成坑侧面和坑底均有拉伸崩落裂纹;分析了超高强度钢靶的侵彻破坏特性,指出侵彻过程中钨合金动能块局部破碎引起靶板内的卸载拉伸剥落和动能块的侵彻锐化行为联合导致了类锥体弹坑的形成。通过数值模拟验证了超高强度钢靶的高速侵彻破坏机制。To study the penetration performance and failure characteristics of ultra-high strength steel targets against highmass tungsten alloy kinetic projectiles with different impact velocities,a ballistic gun was used to carry out 215 g tungsten alloy kinetic projectiles to impact the ultra-high strength G50 steel and 45 steel targets at velocities in the range of 689−1489 m/s.According to the experimental results,a conic-like crater was observed in the ultra-high strength steel target against a tungsten alloy kinetic projectile,which was different from the column-like crater mode observed in the experiments of 45 steel targets.It was also observed that there were several unique tensile spall cracks on the crater surface and bottom for the ultra-high strength steel.The depth of penetration(DOP)and the crater volume of these two steel targets were further obtained,which showed that the DOP of G50 steel targets is shorter than that of 45 steel at similar penetration velocity,while the corresponding crater volume is greater than that of 45 steel.Based on the interaction mechanism between the projectile and target,the high-mass tungsten alloy kinetic projectiles are considered to undergo local fragmentation under high radial stress during penetration into the G50 steel target,resulting in unloading tensile waves within the target.It is believed the unloading waves within the target lead to the spalling damage of the crater wall,resulting in the fish-scale-like rough walls and spallation cracks.This also explains why the crater volume of G50 steel is greater than that of 45 steel.In addition,the sharpening effect was caused by the local fragmentation of the kinetic projectile head.Therefore,it is considered that this failure mode was mainly caused by both the tensile fracture of the target induced by the local fragmentation of the projectile and the sharpening behavior of the projectile.Numerical simulations of the penetration of high-mass tungsten alloy projectiles into ultra-high strength steel targets were further perf

关 键 词：超高强度钢 大质量钨合金动能块 高速侵彻 侵彻特性 

分 类 号：O383[理学—流体力学]