LS-DYAN多效应复合毁伤战斗部设计
关键词 爆炸成型毁伤体 预制破片 毁伤元成型 飞散角 数值模拟
毕业论文设计说明书外文摘要
Title Multi-effect Composite Damage Warhead Design
Abstract
In order to improve the efficiency of Warhead, this paper propose a structure of multi-effect composite damage warhead. The warhead has two Kill element of EFP and preformed fragment, can achieve more complex damage effects. In this paper, premade fragment velocity, scattering angle and EFP molding are analyzed on theoretical, and damage effect of multi-effect composite damage warhead are analyzed by means of numerical simulation. We used the LS-DYAN of EFP’s formation and dispersion process of performed fragment by charge liner angle, liner thickness, shell thickness, detonation mode and performed fragment arrangement mode, compared complex Kill element and single Kill element. The results showed that the penetration effectiveness of EFP is best on the basis of the liner angle suitable 140°~145° and line thickness selected between 3.5mm and 4.5mm. The scattering characteristics of premade fragment is best on the basis of shell thickness selected 4mm and tungsten balls arranged on the arc. And Complex kill element structure has advantages over single.
Keywords EFP prefabricated fragments formation of penetrator scattering angle numerical simulation
目 次
1 绪论 1
1.1 课题的研究背景及意义 1
1.2 多效应复合毁伤战斗部影响因素分析 2
1.3 国内外研究进展 4
1.4 本文研究的主要内容和工作 7
2 破片飞散分析及EFP成型的基本理论 8
2.1 多效应复合毁伤战斗部毁伤机理 8
2.2 预制破片飞散特性参数计算 8
2.3 EFP形成机理及理论计算 11
2.4 本章小结 15
3 多效应复合战斗部数值模拟研究 17
3.1 数值模拟计算方法介绍 19
3.2 数值仿真方案及模型建立 19
3.3 复合毁伤元成型过程分析 24
3.4 本章小结 26
4 多效应复合战斗部影响因素分析 27
4.1 EFP成型影响因素分析 27
4.2 预制破片飞散特性影响因素分析 31
4.3 战斗部复合毁伤元与单一毁伤元对比研究 36
4.4 多效应复合战斗部结构选择 39
4.5 本章小结 41
结论 42
致谢 44
参考文献45
1 绪论
1.1 课题的研究背景及意义
多效应复合毁伤战斗部(Multi-effect Composite Damage Warhead)，属于综合效应战斗部，战斗部起爆后对目标同时产生两种或两种以上作用，实现多效应的复合毁伤效果。多效应复合毁伤战斗部可以同时对多种目标进行有效打击，战斗部利用效率高，通用化程度高，适应性强，已成为目前战斗部技术发展的一个重要方向。
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