预控破片战斗部成型及速度衰减的影响研究
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摘要
基于LS-DYNA有限元软件对V型刻槽预控破片战斗部成型过程进行仿真模拟,利用量纲分析的方法,得到了V形槽的预控破片战斗部有效破片数量、平均速度和速度衰减计算方程。结果表明:V型槽预控破片战斗部可以形成大量的有效破片,初始速度大于1700m/s,具有良好的毁伤特性。该模型计算结果对比爆坑试验与测速试验结果,吻合度较好。所得结果为预控破片战斗部进一步的研究提供可靠的参考依据。
Based on the LS-DYNA finite element software,the simulation of V-shaped groove pre-controlled broken warhead forming process was carried out. The number of effective fragments and the average speed were obtained by dimension analysis method. The results showthat the V-shaped groove pre-controlled warheads can form a large number of effective fragments with high-flying speed. The results of the model matched those of the experiment better. The results provide a reliable basis for the further study of prefabricated warheads.
Based on the LS-DYNA finite element software,the simulation of V-shaped groove pre-controlled broken warhead forming process was carried out. The number of effective fragments and the average speed were obtained by dimension analysis method. The results showthat the V-shaped groove pre-controlled warheads can form a large number of effective fragments with high-flying speed. The results of the model matched those of the experiment better. The results provide a reliable basis for the further study of prefabricated warheads.
引文
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[3]Grisaro H,Dancygier A N.Numerical study of velocity distribution of fragments caused by explosion of a cylindrical cased charge[J].International Journal of Impact Engineering,2015(86):1-12.
[4]蒋浩征.杀伤战斗部破片飞散初速ν0的技术[J].兵工学报,1980,1(1):68-79.
[5]戴端辉,黄朝会.预控破片弹杀伤面积的技术[J].兵工学报,1998,19(4):365-367.
[6]郑娜娜,董素荣,王晓蓉,等.高破片率钢预控破片弹毁伤效能分析[J].弹箭与制导学报,2013,33(3):59-62.
[7]吴成,倪艳光,张渝霞.内刻V形槽半预控破片战斗部壳体的断裂准则[J].北京理工大学学报,2008,28(7):569-572.
[8]朱桂利,李伟兵,王晓鸣,等.预控破片对厚壁圆管的横向高速冲击作用研究[J].振动与冲击,2016,35(5):115-119.
[9]印立魁,蒋建伟,门建兵,等.立方体预控破片战斗部破片初速计算模型[J].兵工学报,2014,35(12):1967-1971.
[10]彭正午,张庆,王晓鸥,等.刻槽参数对预控破片形成情况的影响研究[J].火工品,2013,1:17-20.
[11]赵凯,高光发,王肖钧.柱壳结果坑冲击性能量纲分析与数值模拟研究[J].振动与冲击,2014,33(11):12-16.
[12]宋梅丽,李文彬,王晓鸣,等.弹体高速侵彻效率的实验和量纲分析[J].爆炸与冲击,2016,36(6):752-758.
[13]李丽萍,孔德仁,王芳,等.基于量纲分析的爆炸冲击波效应靶模型分析与实验研究[J].振动与冲击,2016,35(6):100-103.
[14]王朝成,任辉启,穆朝民,等.一端开口圆筒形爆室线状装药爆炸冲击波峰值压力计算分析[J].振动与冲击,2014,33(9):122-125.
[15]相升海,徐文龙,张健,等.刻槽式MEFP的成形及侵彻钢靶模式[J].爆炸与冲击,2015,35(1):135-139.