JPC聚能装药对钢筋混凝土墙毁伤效应的试验与数值模拟研究  

Experimental and numerical simulation research on damage effect of jetting projectile charge(JPC) on reinforced concrete wall

作　　者：郝礼楷 谢兴博 顾文彬 张亚栋 邹绍昕 陆鸣 康耕新 HAO Likai;XIE Xingbo;GU Wenbin;ZHANG Yadong;ZOU Shaoxin;LU Ming;KANG Gengxin(College of Field Engineering,Army Engineering University of PLA,Nanjing 210007,Jiangsu,China;Unit 31539 of PLA,Beijing 100043,China;Engineering Research Center of Safety and Protection of Explosion and Impact of Ministry of Education,Southeast University,Nanjing 211189,Jiangsu,China;National Defense Engineering College,Army Engineering University of PLA,Nanjing 210007,Jiangsu,China)

机构地区：[1]陆军工程大学野战工程学院,江苏南京210007 [2]31539部队,北京100043 [3]东南大学爆炸安全防护教育部工程研究中心,江苏南京211189 [4]陆军工程大学国防工程学院,江苏南京210007

出　　处：《爆炸与冲击》2023年第2期104-118,共15页Explosion and Shock Waves

基　　金：陆军工程大学科技创新项目(KYGYZB0019003)。

摘　　要：为了满足高侵深和大穿孔的要求,设计一种聚能杆式弹丸(jetting projectile charge, JPC),开展大尺寸钢筋混凝土墙的毁伤效应试验。在此基础上,基于修正参数的K&C(Karagozian&Case)模型进行数值模拟,研究JPC高速侵彻和爆炸冲击波对钢筋混凝土墙的联合破坏作用,分析墙体厚度对破坏效果的影响规律。结果表明,在1.67倍和2.50倍装药直径的炸高条件下,JPC均能够有效贯穿80 cm(6.67倍装药直径)厚的钢筋混凝土墙,形成直径大于6 cm(0.50倍装药直径)的柱状孔洞;聚能装药的多载荷毁伤特性决定了钢筋混凝土墙的破坏结果,爆炸冲击波能够加剧墙体正面开坑和背面崩落的破坏范围;墙体厚度对于墙体正面漏斗坑的直径与深度及内部侵彻孔洞直径均无显著影响;随着墙体厚度增大,背面漏斗坑直径逐渐减小,深度却逐渐增大。To meet the requirements of a tandem penetrating warhead for high penetration depth and large perforation, a jetting projectile charge(JPC) was designed. The damage test of a large-scale reinforced concrete wall was carried out to analyze the impact of standoff distance on the damaging effect. By constructing a large air domain covering the whole reinforced concrete wall for the transmission of explosion shock wave and JPC, the coupling damage of JPC high-speed penetration and explosion shock wave to the reinforced concrete wall was considered. The damage evolution, strain rate and other parameters of the Karagozian & Case(K&C) model were modified, based on which a numerical model was established to simulate the whole process of the combined damage of JPC and explosion shock wave to the reinforced concrete wall. The reliability of the numerical model was fully verified by comparing the simulation and test results from the failure mode, crater depth and crater diameter of the reinforced concrete wall. On this basis, the combined damage effect of JPC and explosion shock wave on the reinforced concrete wall was further studied, and the influence of wall thickness on the damaging effect was analyzed. The results show that JPC can penetrate the reinforced concrete wall with a thickness of 80 cm(6.67 times of charge diameter) at the standoff distance of 1.67 times and 2.50 times of charge diameter, and form cylindrical holes with a diameter of more than 6 cm(0.50 times of charge diameter). The multi-load damage characteristic of shaped charge determines the damage result of the reinforced concrete wall, and the explosion shock wave can intensify the damage range of the front crater and back crater of the reinforced concrete wall. The wall thickness has no significant effect on the diameter and depth of the crater on the front of the wall and the diameter of the internal penetration hole. With the increase of the wall thickness, the crater diameter on the back gradually decreases and the crater depth on the back gradual

关 键 词：聚能杆式弹丸(JPC) 钢筋混凝土墙 侵彻 冲击波 联合破坏 

分 类 号：O383[理学—流体力学]