含调整器装药结构破片形成影响因素研究

Study on the influencing factors of fragment formation of charge structure with regulator

为有效改善柱壳断裂位置并产生形状规则的大质量破片,该文设计了一种由柱壳装药以及嵌入其中的爆轰波调整器构成的新型破片战斗部结构,并研究了爆轰波调整器结构参数对破片输出的影响。采用AUTODYN-3D有限元计算软件,分析了爆轰波碰撞叠加切割柱壳形成破片的过程,找出了柱壳切割效果优良的调整器结构参数取值范围,并开展了最优结构的验证试验。研究结果表明:有效破片生成率随内外层装药厚度比、调整器厚度的增加以及沟槽数量的减小,由一定值逐渐达到100%;当内外层装药厚度比为5、调整器厚度为10 mm或15 mm且开有8或12个沟槽时,有效破片在生成率达到100%的同时兼具较大的平均质量;水井试验回收率为96.3%,获得的有效破片生成率为100%,破片平均长度和宽度分别为39.75 mm和14.2 mm,与仿真结果的误差分别为6.25%和11.25%。该文研究结果可为实现破片战斗部智能可选择化提供借鉴思路。

To effectively improve the fracture position of the shell and produce large mass fragments with regular shape,a new type of fragment warhead structure was designed,composing of the shell charge and the detonation regulator embedded in it.And the influence of the structural parameters of the detonation regulator on the output of fragments was analyzed.The process of fragment formation by the impact of detonation wave superimposed cutting column shell by using the finite element calculation software AUTODYN-3D,and the range of the structural parameters of the regulator that can achieve the cutting effect of column shell was found out,and the verification test was carried out.The results show that the effective fragment generation rate gradually increases from a certain value to 100%with the increase of the ratio of inner and outer charge thickness,the increase of the regulator thickness and the decrease of the number of grooves.When the ratio of the inner and outer charge thickness is 5,the regulator thickness is 10 mm or 15 mm and there are 8 or 12 grooves,the effective fragment has a high average mass while the generation rate reaches 100%.The recovery rate of the well test is 96.3%,the effective fragment generation rate is 100%,the average length and width of the fragment are 39.75 mm and 14.2 mm respectively,and the deviations with the simulation results are 6.25%and 11.25%respectively.The research results of this article can provide reference ideas for the design of intelligent selectable fragmentation warheads.