AUTODYN155mm战斗部预制破片结构设计
毕业论文关键词 155mm榴弹 预制破片 仿真 内置式
毕业设计说明书外文摘要
Title 155mm pre-fragmenting fragmentation Warhead research
Abstract
As the main damage element fragment warhead, is an important form of target damage. In order to enhance the lethality of the pre-fragmenting fragment is more effective method, this method can accurately control of fragment shape, quality and size. The 155mm pre-fragmenting fragmentation grenade is designed in this paper, first of all the overall design of grenade launcher, followed by the choice of two different shapes, different materials of preformed fragment and the built-in [1] placed pre-fragmenting fragment. Then pre-fragmenting fragments of different shape and different material parameters through the AUTODYN software to carry on the simulation computation, pre-fragmenting fragment formation, velocity and scattering angle distribution. The final simulation assessment of preformed fragment killing ability through theoretical analysis and numerical.
Keywords 155mm cannon-shot fragment simulation built-in
目 次
1 绪论 1
1.1 引言 1
1.2 研究背景及意义 1
1.3 国内外发展状况 3
1.4 国外研究 5
1.5 本文主要研究内容及工作 6
2 预制破片结构的设计 7
2.1 引言 7
2.2 预制破片材料选择 7
2.3 预制破片形状的选择 8
2.4 预制破片结构 10
2.5 本章小结 10
3 弹体结构设计 12
3.1引言 12
3.1 壳体材料及壁厚 12
3.2 引信选择 13
3.3 弧形部 13
3.4 炸药 14
3.5 预制破片 14
3.6 圆柱部 15
3.7 弹带 16
3.8 底凹 16
3.9 壳体强度校核 16
3.10 本章小结 20
4仿真模型建立 21
4.1 引言 21
4.2 AUTODYN软件介绍 21
4.3 AUTODYN基本算法 21
4.4 有限元建模 23
4.5 仿真模型建立 23
4.6 材料参数及模型的选择 26
4.7 本章小结 28
5 仿真结果与分析 29
5.1 引言 29
5.2 自然破片仿真分析 29
5.3 预制破片壁厚8mm仿真分析 31
5.4 预制破片壁厚为10mm仿真分析 32