摘要
为研究结构弹体对钢筋混凝土靶的高速侵彻破坏效应,利用口径35 mm弹道炮开展了1030~1520 m/s速度范围内的高速侵彻试验,获得了弹体的撞击速度、破坏形态、剩余长度、剩余质量和靶体中的侵彻深度及成坑尺寸等试验数据,分析了侵彻深度和侵彻机理随速度的变化关系。结果表明:在1030~1390 m/s的速度范围内,弹体头部磨蚀,磨蚀程度随侵彻速度增加而加剧,侵彻深度随撞击速度近似线性增大;撞击速度在1390~1480 m/s范围内,弹体头部严重磨蚀,侵彻深度随撞击速度增加而减小;撞击速度大于1480 m/s后,弹体严重破碎,侵彻深度急剧下降。针对结构弹体高速侵彻过程中的破坏特点,将侵彻速度划分为刚体侵彻区、准刚体侵彻区、侵蚀体侵彻区和破碎体侵彻区,可为钻地弹结构设计提供参考。
In order to study the high-speed penetration effect of a structural projectile on a reinforced concrete target, tests of structural projectiles with high velocity penetrating into reinforced concrete target were carried out by using a 35 mm-caliber ballistic gun as a launching tool, and the penetration velocity of the projectiles ranges from 1 030 m/s to 1 520 m/s. The test data of the deformation and failure form, remaining length and remaining mass of the projectiles were obtained through detailed measurement of the recovered projectile. The macro-damage of the targets, the penetration depth and crater size of the target bodies were also obtained. Based on the experimental data, the changes of the projectile structure response, penetration of the dimensionless crater depth, and dimensionless crater diameter with penetration velocity were analyzed. According to the deformation and destruction of the projectiles during the penetration process, the penetration depth and penetration mechanism change with penetration velocity were analyzed, and the partition of the penetration velocity was discussed. The results show that, in the penetration velocity ranges from 1 030 m/s to 1 390 m/s, the heads of the projectiles are eroded, and the degree of erosion increases with the increase in penetration velocity, and the penetration depth increases approximately linearly with the penetration velocity. When the penetration velocity is in the range of 1 390-1 480 m/s, the heads of the projectiles are severely eroded, and the penetration depth decreases as the penetration velocity increases. When the impact velocity is higher than 1 480 m/s, the projectile bodies are severely broken, and the penetration depth decreases sharply as the penetration velocity increases.According to the damage characteristics of the structural projectiles during high-speed penetration, the penetration velocity is divided into rigid body penetration zone, quasi-rigid body penetration zone, eroded body penetration zone and broken body penetration zone, which can provide a reference for the structural design of ground-penetrating projectile.
作者
王可慧
周刚
李明
邹慧辉
吴海军
耿宝刚
段建
戴湘晖
沈子楷
李鹏杰
古仁红
WANG Kehui;ZHOU Gang;LI Ming;ZOU Huihui;WU Haijun;GENG Baogang;DUAN Jian;DAI Xianghui;SHEN Zikai;LI Pengjie;GU Renhong(Northwest Institute of Nuclear Technology,Xi’an 710024,Shaanxi,China)
出处
《爆炸与冲击》
EI
CAS
CSCD
北大核心
2021年第11期89-96,共8页
Explosion and Shock Waves
关键词
结构弹体
高速侵彻
钢筋混凝土
结构响应
速度分区
structural projectile
high-velocity penetration
reinforced concrete target
experimental research
velocity partition