破片对带壳装药冲击起爆的数值仿真
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摘要
针对弹药可能会受到多发破片的撞击作用影响,对单个和多个破片撞击带壳装药的侵彻效果进行仿真。运用Autodyn-3D软件建立有限元模型,模拟不同形状的单破片及双破片撞击带壳装药、冲击起爆夹层炸药的过程,计算其撞击带壳装药的阈值速度,并分析两破片不同间距对冲击带壳装药响应程度的影响,得出不同情况下冲击起爆带壳装药的阈值速度和变化规律。结果表明:直径、阈值速度和双破片的间距对带壳装药的冲击起爆有一定的影响,随着间距的增大,压力峰值减小,衰减变快。
Because the ammunition may be affected by the impact of multiple fragments,the penetration effect of single and multiple fragments impacting the shell charge.The finite element model is simulated by AutoDyn-3D.The process on different shapes single fragment and double fragments impacted the shelled explosive and shock detonation were simulated,calculated the threshold speed of impacting shelled explosive,and analyzed the impact of different gap on shock detonation.The threshold speed and the change rule of the detonating with shelled explosive under different conditions were obtained.The results show that the diameter,the threshold speed and the distance between the two fragments have a certain effect on the impact initiation of the shelled explosive.As the spacing increases,the pressure peak decreases and the attenuation becomes faster.
Because the ammunition may be affected by the impact of multiple fragments,the penetration effect of single and multiple fragments impacting the shell charge.The finite element model is simulated by AutoDyn-3D.The process on different shapes single fragment and double fragments impacted the shelled explosive and shock detonation were simulated,calculated the threshold speed of impacting shelled explosive,and analyzed the impact of different gap on shock detonation.The threshold speed and the change rule of the detonating with shelled explosive under different conditions were obtained.The results show that the diameter,the threshold speed and the distance between the two fragments have a certain effect on the impact initiation of the shelled explosive.As the spacing increases,the pressure peak decreases and the attenuation becomes faster.
引文
[1]王志军,尹建平.弹药学[M].北京:北京理工大学2005:207-257.
[2]李小笠,屈明,路中华.三种破片对带壳炸药冲击起爆能力的数值分析[J].弹道学报,2009,21(4):72-75.
[3]崔凯华,洪滔,曹结东.射弹冲击带盖板Comp B装药起爆过程数值模拟[J].含能材料,2010,18(3):286-289.
[4]江增荣,李向荣,李世才,等.预制破片对战斗部冲击起爆数值模拟[J].弹道学报,2009,21(1):9-13.
[5]贾宪振,陈松,杨建,等.双破片同时撞击对B炸药冲击起爆的数值模拟研究[J].高压物理学报,2011,25(5):469-474.
[6]赵春龙,王志军,崔斌,等.玻璃射流冲击带壳装药的数值模拟[J].兵器材料科学与工程,2015,38(3):93-95.
[7]卢锦钊,智小琦.六棱柱冲击作用下B炸药起爆影响因素研究[J].中北大学学报,2016,37(2):198-204.
[8]LEE E L,TARVER C M.Phenomenological Model of Shock Initiation in Heterogeneous Explosives[J].Phys Fluids,1980,23(12):2362-2372.
[2]李小笠,屈明,路中华.三种破片对带壳炸药冲击起爆能力的数值分析[J].弹道学报,2009,21(4):72-75.
[3]崔凯华,洪滔,曹结东.射弹冲击带盖板Comp B装药起爆过程数值模拟[J].含能材料,2010,18(3):286-289.
[4]江增荣,李向荣,李世才,等.预制破片对战斗部冲击起爆数值模拟[J].弹道学报,2009,21(1):9-13.
[5]贾宪振,陈松,杨建,等.双破片同时撞击对B炸药冲击起爆的数值模拟研究[J].高压物理学报,2011,25(5):469-474.
[6]赵春龙,王志军,崔斌,等.玻璃射流冲击带壳装药的数值模拟[J].兵器材料科学与工程,2015,38(3):93-95.
[7]卢锦钊,智小琦.六棱柱冲击作用下B炸药起爆影响因素研究[J].中北大学学报,2016,37(2):198-204.
[8]LEE E L,TARVER C M.Phenomenological Model of Shock Initiation in Heterogeneous Explosives[J].Phys Fluids,1980,23(12):2362-2372.