柱形装药近地动爆冲击波周向传播规律研究  

A study on the circumferential propagation law of the shock waves produced by the near ground dynamic explosion of cylindrical charge

作　　者：王振宁 尹建平[1] 伊建亚 李旭东[1] WANG Zhenning;YIN Jianping;YI Jianya;LI Xudong(College of Mechanical and Electrical Engineering,North University of China,Taiyuan 030051,Shanxi,China)

机构地区：[1]中北大学机电工程学院,山西太原030051

出　　处：《爆炸与冲击》2023年第6期88-105,共18页Explosion and Shock Waves

基　　金：2021年山西省基础研究计划(自由探索类)(20210302123207)。

摘　　要：战斗部复杂的末弹道参数会影响近地爆炸冲击波的周向传播规律及对目标的毁伤程度,研究柱形装药近地爆炸冲击波传播规律对精确评估毁伤效能具有重要的工程意义。基于AUTODYN-3D软件对不同末弹道参数的柱形装药近地爆炸进行了数值模拟,通过对2个方向分别建模,获得了柱形装药近地爆炸下前、后、侧3个方向的冲击波压力数据;研究了战斗部的落速、落角、爆心高度和装药长径比4个参数对柱形装药近地爆炸冲击波传播的影响规律,分析了冲击波的演化过程、峰值压力和马赫杆高度。研究结果表明:静爆时,爆心高度是影响冲击波马赫杆高度的主要因素,落角与装药长径是影响马赫杆高度方向差异的主要因素;动爆时,能够增大周向马赫杆高度,前方最显著;另外,随着动爆速度的提升,前向冲击波峰值线性增大。正交优化的结果显示,4种变量中,动爆速度对柱形装药前方峰值压力极差最大,落角对后方峰值压力极差最大,爆心高度对马赫杆高度影响最大。通过研究柱形装药近地动爆冲击波周向传播规律,表明合理的调整装药参数和近地爆炸姿态对实现某方向的最大毁伤或减小超压伤害具有借鉴意义。The complex terminal ballistic parameters of the warhead will affect the circumferential propagation law of the near ground explosive wave and the damage degree to the target.Studying the propagation law of the near ground explosive wave of the cylindrical charge has important engineering significance to accurately evaluate the damage efficiency.By using AUTODYN-3D software,the near ground explosion of cylindrical charge with different terminal ballistic parameters is simulated and calculated,and the data of shock wave pressure in the front,back and side directions produced by the near ground explosion of cylindrical charge are obtained by modeling in two directions respectively.Thus,the influences of four parameters,namely,the velocity of the battle group,the impact angle,the height of the explosion center and the ratio of the length to diameter of the charge,on the propagation of the shock wave produced by the near ground explosion of the cylindrical charge are studied.The evolution process of the shock wave,the peak pressure and the height of the Mach stem are analyzed.The results show that the height of the explosion center is the main factor affecting the height of the shock wave Mach stem during static explosion,and the impact angle and the length-to-diameter ratio of the charge are the main factors affecting the difference in the height direction of the Mach stem.During dynamic explosion,the height of circumferential Mach stem can be increased,especially in the front;in addition,the peak value of forward shock wave increases linearly with the increase of dynamic detonation velocity.The results of orthogonal optimization show that the dynamic detonation velocity has the largest range to the front peak pressure of the cylindrical charge among the four variables;the impact angle has the largest range to the rear peak pressure;and the height of explosion center has the greatest influence on the height of Mach stem.By studying the circumferential propagation law of the shock wave produced by near ground dynamic

关 键 词：柱形装药 近地爆炸 正交优化 马赫波 

分 类 号：O383[理学—流体力学]