基于AUTODYN的枪榴弹弹底破片优化设计
关键词 枪榴弹 AUTODYN 数值模拟 弹底优化
毕业论文设计说明书外文摘要
Title Optimization Fragments of Grenade Projectile Based on AUTODYN
Abstract
In order to offer the 35 mm caliber armor piercing grenade man fragmentation projectile base structure optimization security design reference , using crushing process AUTODYN inside the warhead under explosive loading was simulated to obtain broken situation of the original design bombs bottom structure . For the original bombs bottom piece producing fragments flying back endanger the safety of the shooter, the proposed structures of the projectile base on a few variety of improved structure design, and were simulated. The simulation results show that spherical projectile base structure was the most conducive to minish fragments of the bottom of caliber armor piercing grenade, minimize the threat to its own personnel.First of all, the present study needs to address how to use AUTODYN3D software loading grenade explosion in the internal dynamic crushing process simulation, to reflect the random fragmentation of materials and structures, and the to naturally generated fragments.Secondly, this study needs to address the problem analysing that AUTODYN3D software calculation results and the experimental nature grenade fragments are similar or consistent .Thirdly, this study need to improve the structure of the original grenade ，people can get the grenade structure both ensuring emission intensity, enabling fragmentation of bottom of grenade shells as small as possible, or being no harm to the surrounding pergence shooter .
Keywords Rifle grenade AUTODYN Numerical Simulation Projectile base optimization
目 次
1 引言 1
1.1 研究背景 1
1.1.1 AUTODYN背景 1
1.2 国内外研究进展 1
1.2.1 国内研究进展 1
1.2.2 国外研究进展 3
2 数值模拟与仿真 4
2.1 基于AUTODYN的数值模拟与仿真 4
2.2 仿真计算模型 4
2.2.1 Stochastic模型 4
2.2.2 35mm口径枪榴弹的计算模型 5
2.3 三种结构的总结 8
3 不同弹底强度校核 10
3.1 结构再次改进 10
3.2 圆盘平底弹底强度校核 10
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