摘要
针对增强聚能射流的破甲后效问题,设计了等壁平顶锥形铜铝双层复合药型罩装药结构,采用冲击波物理显示欧拉动力学软件SPEED开展复合射流成型及对钢-铝间隔靶侵彻过程的数值模拟,分析内外双层药型罩高度比ε、药型罩锥角α等参数对复合射流成型和间隔靶侵彻性能的影响规律。研究结果表明:复合射流的头部速度随ε增大呈先减小后增加的趋势,在ε约为1/2时,可形成具有相近速度的铜铝同轴复合射流微元,利于铝射流微元与目标相互作用实现后效增强毁伤;且当α在50°~60°范围内时,复合射流中段为集中的铝射流微元,更利于侵彻后的爆炸或爆燃反应。对优化参数的复合药型罩结构数值模拟结果与文献公布的实验结果吻合较好。研究结果对增强后效聚能装药设计具有参考价值。
To address the problem of the after-effect of the enhanced shaped charge jet penetrating armor,the cone-shaped flat-topped conical copper-aluminum double-layer composite charge structure was designed.Numerical simulation of the jet forming and penetration process of the steel-aluminum interval target with this structure was performed using Euler dynamics software SPEED.And the influence rules of parameters such as the height ratioεof the inner and outer liner,the cone angleαof the liner on the compound jet forming and the penetration of the interval target plate were analyzed.The research results show that the head velocity of the compound jet declined first and then rose with the increase ofε.Whenε=1/2,a coaxial copper and aluminum compound jet element with similar velocity can be formed,which is conductive to strengthening the after-effect after the interaction between the aluminum jet and the target.Whenεis 55°~60°,the middle section of the compound jet is a concentrated aluminum jet element,which is more conducive to the intensified explosive reaction after penetration.It is found that the simulation results of the optimized parameters of the compound liner structure are perfectly consistent with the experimental results published in the literature.This research results have a certain reference value for the enhanced after-effect shaped charge design.
作者
李金霖
蒋建伟
门建兵
王树有
李梅
LI Jinlin;JIANG Jianwei;MEN Jianbing;WANG Shuyou;LI Mei(State Key Laboratory of Explosision Science and Technology,Beijing Institute of Technology,Beijing 100081,China)
出处
《高压物理学报》
CAS
CSCD
北大核心
2022年第1期192-199,共8页
Chinese Journal of High Pressure Physics
关键词
聚能装药
增强后效
射流
数值模拟
药型罩
shaped charge
after-effect enhancement
jet
numerical simulation
liner
