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定向战斗部破片飞散的数值模拟及实验研究

时间:2019-03-16 23:13来源:毕业论文
摘要展开式定向战斗部是一种新型的战斗部,可通过辅装药的爆炸驱动作用使战斗部绕铰链机械展开,当战斗部展开至一定角度后引爆主装药,使破片向目标方向集中飞散,从而提高战

摘要展开式定向战斗部是一种新型的战斗部,可通过辅装药的爆炸驱动作用使战斗部绕铰链机械展开,当战斗部展开至一定角度后引爆主装药,使破片向目标方向集中飞散,从而提高战斗部的定向毁伤效益。由于其在不同展开角度和不同外形等条件下所产生破片飞散特性不同,所带来的毁伤效应也不同,所以对其在不同条件下的破片飞散特性的研究尤为重要。通过ANSYS/LS-DYNA有限元分析软件建立展开式定向战斗部的简单模型,通过改变其破片排布外形和展开角度来模拟战斗部在不同条件下的破片分布场。获得破片的空间分布及速度分布数据,进而对比得到各设计参量对战斗部破片飞散特性的影响规律。此外,通过展开型定向战斗部杀伤威力综合试验,得到在不同展开姿态情况下,一定范围内的破片空间分布情况和不同飞散角范围内破片的平均速度。最后通过数值模拟得到的破片空间分布结果和实验研究成果的对比,得到在不同的展开角度情况下,展开型定向战斗部在飞散角范围内的破片数都比一般常规战斗部要多,即展开型定向战斗部在目标方向有很高的破片密度增益作用。对于速度分布的结果对比,得到展开总角度越小,在破片飞散角度越大的地方获取速度越大;展开总角度越大,破片飞散角度越小的地方获取的速度越大。33834
关键词  定向战斗部  破片飞散  数值模拟  实验研究
毕业论文设计说明书外文摘要
Title    Numerical simulation and experimental study of Aimable Warhead fragments scattering 源自$六l维,论:文w网)加7位QQ3249^114 www.lwfree.cn
Abstract
Expandable Warhead is a new type of warhead ,which about the hinge mechanical  
expansion by the action of the auxiliary charge ,when the warhead launched from a certain angle to detonate the main charge ,scattering of broken pieces centralized direction to the target , thereby improving directional warhead damage benefits. Because of differently unfold angles and different shapes conditions, it produce fragments with different scattering characteristics, the damage brought about by the effects of different accordingly. Simple model expansion warhead is built by ANSYS / LS-DYNA finite element analysis software, by changing its fragments arranged of the shape and expansion angle to simulate warhead distribution field under different conditions. Obtaining fragments of the spatial distribution and velocity distribution data, and then compare the influence of various design parameters to obtain the amount of warhead fragments scattering characteristics. In addition, by expanding type directional warhead lethality comprehensive test, obtained under different circumstances unfold attitude, broken piece of space distribution of a range of scattering angles within the range of situations and different fragments of average speed. Fragments space finally obtained by the numerical simulation of distribution results of comparative and experimental research results, obtained in different angular development, the Warhead several fragments open-type directional in the scattering angle range than the average conventional warhead to be more, that expansion directional warhead fragments have a high density gain in target direction. For comparison of the results of the velocity distribution, expanded the total angle to give smaller fragments scattering angle increases in place to obtain greater speed; the greater the total expansion angle, the greater the smaller fragments scattering angle where acquisition speed.
Keywords   Aimable warhead   Fragments scattered   Numerical simulation   Experimental research 源自$六l维,论:文w网)加7位QQ3249^114 www.lwfree.cn
目录    
1 引言    1
1.1研究背景    1
1.1.1 研究背景    1
1.1.2 展开式定向战斗部概述    2 定向战斗部破片飞散的数值模拟及实验研究:http://www.lwfree.cn/jixie/20190316/31124.html
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