串联战斗部前级爆轰对后级聚能侵彻体成型的影响
基于聚能侵彻体成型理论，理论分析了串联战斗部前后两级装药间距与延迟起爆时间对后级聚能侵彻体成型的影响，建立了前级爆轰波对后级聚能侵彻体成型影响的理论分析模型。利用LS-DYNA显示动力分析有限元软件，数值模拟了不同前后级装药间距、不同延迟起爆时间条件下的串联聚能装药的成型过程，获得了不同前后级装药间距下延迟起爆时间对后级聚能侵彻体成型的影响规律，找出了不同前后两级装药间距所对应的最佳延迟起爆时间。建立了两级装药间距与后级延迟时间的匹配关系公式，公式与仿真结果吻合较好，通过公式的计算我们可以预测不同的前后间距其最佳的延迟时间大小。利用有限元软件对串联聚能装药侵彻钢靶的过程进行了数值模拟，仿真获得串联聚能装药战斗部对靶板的侵彻深度为325 ，比单级杆式射流侵彻深度提高了26%。本研究对串联聚能装药战斗部的设计及工程应用有一定的指导意义。8945
关键词 串联战斗部 聚能装药 延迟起爆时间 装药间距 侵彻 数值模拟
毕业设计说明书（论文）外文摘要
Title The impact of the backward shaped penetrator forming caused by tandem warhead forward shaped charge detonation.
Abstract
For the problem of the impact of the backward shaped penetrator forming caused by tandem warhead forward shaped charge detonation, the method of theory analysis and numerical simulation was used in this paper, the matching relationship between the two tandem charges was studied.
Based on the shaped charge penetrator forming theories, the effect on the backward shaped penetrator forming of the two tandem charges spacing and delayed initiation time was analyzed theoretically. The theoretical analysis model of forward shaped charge’s detonation effect on the backward penetrator was built. Using LS-DYNA software, the tandem shaped charge formation process under the conditions of different charge spacing and different delay initiation time was studied by numerical simulation. The influence regularity on the backward penetrator caused by delayed initiation time was gained under the different charge spacing. The optimal delay initiation time at the same charge spacing was found. The matching formula of two charge spacing and delay time was built, the formula is consistent with the simulation results well, through the calculation of the formula, we can predict the optimum delay time in the situation of different charge spacing.
Use the finite element software to simulate the tandem shaped charge penetrating steel target. The penetration depth of the tandem shaped charge warhead on the target plate was 325mm, compared with the single-stage, the penetration depth increased by 26%. The study had some guiding significance to the warhead design and engineering applications.
Keywords Tandem warhead; Shaped charge; Delay initiation time; Charge spacing; Penetration; Numerical simulation
目次
1 绪论 1
1.1 引言 1
1.2 国内外串联战斗部的研究现状及发展趋势 2
1.3 本文的研究目的、方法和主要内容 9
2 聚能侵彻体成型理论分析 10
2.1 成型装药基本理论 10
2.2 扩展的PER理论模型 13
3 串联聚能装药及其仿真模型 21
3.1 串联聚能装药结构设计 21
3.2 LS-DYNA软件介绍及应用范围 22
3.3 串联聚能装药仿真模型建立 27