药型罩形位偏差对聚能装药射流成型及其破甲过程影响  

Influence of Shape and Position Deviation of Liner on Jet Forming and penetration Process of Shaped Charge

作　　者：徐恒威 梁斌[2] 刘俊新[1] 卢永刚[2] 李军润 廖文军 XU Heng-wei;LIANG Bin;LIU Jun-xin;LU Yong-gang;LI Jun-run;LIAO Wen-jun(School of Civil Engineering and Architecture,Southwest University of Science and Technology,Mianyang 621010,China;Institute of Systems of Engineering,China Academy of Engineering Physics,Mianyang 621900,China)

机构地区：[1]西南科技大学土木工程与建筑学院,四川绵阳621010 [2]中国工程物理研究院总体工程研究所,四川绵阳621900

出　　处：《含能材料》2023年第10期1049-1058,共10页Chinese Journal of Energetic Materials

基　　金：国家自然科学基金(11672278)。

摘　　要：为研究药型罩形位偏差对聚能装药射流成型及其破甲过程影响,采用经脉冲X光摄影试验和侵彻深度试验验证的数值模型,探究了药型罩偏移量在0~0.05D_(k)范围内时罩表面压力分布情况、射流成型参数及侵彻深度的演化规律,获得满足良好射流性能的药型罩偏移量允许范围,并揭示了药型罩偏移与偏斜耦合情形下射流形态及横向速度的变化规律。结果表明:药型罩偏移影响了t=10μs和t=12μs时刻(压垮过程中期和中后期)罩表面压力的旋转对称分布,而t=4μs和t=14μs(压垮过程早期和后期)几乎不受影响;药型罩偏移量为0.0125D_(k)时,射流保持着良好的准直性和连续性,侵彻深度较轴对称情况下降了6.6%;当药型罩偏移量超过0.0125D_(k)后,射流形态呈弓形状,弯曲严重时将会发生断裂,且侵彻深度下降百分比均超过10%;当药型罩偏斜角为-0.015α,偏移量由0向-0.0125D_(k)变化时,射流弯曲方向发生改变,弯曲程度呈先减后增的趋势变化。To study the influence of liner offset on the jet forming and armor breaking process of shaped charge,the numerical model verified by pulse radiography and penetration depth tests was used to investigate the evolution of the pressure distribution on the liner surface,molding parameters and penetration depth under different offsets ranging from 0~0.05D_(k).The allowable range of liner offset that meets the requirements of good jet performance was obtained.In addition,the variation law of jet shape and lateral velocity under the coupling of liner deflection and deflection was discussed.The results show that the liner offset affects the symmetric distribution of liner surface pressure at 10μs and 12μs after initiation(middle and late collapse process),and a negligible effect observed at 10μs and 12μs after initiation(early and finally collapse process).When the liner offset is 0.0125D_(k),the jet maintains good collimation and continuity,and the penetration depth decreases by 6.6% compared with the axisymmetric case;When the offset exceeds 0.0125D_(k),the jet bends in a bow shape and breaks at severe bending,with the decrease of penetration depth exceeding 10%.When the deflection angle of the liner is-0.015α,and the deflection changes from 0 to-0.0125D_(k),the bending direction of jet changes,and the bending degree decreases first and then increases.

关 键 词：药型罩偏移 罩表面压力分布 射流成型 侵彻过程 偏移与偏斜耦合 

分 类 号：TJ5[兵器科学与技术—军事化学与烟火技术] TJ410.33