Numerical simulation on explosion-fragmentation characteristics of cylinder warhead
-
摘要: 【目的】为探讨圆柱体战斗部爆炸破片分布及威力场特性，【方法】利用ANASYS/AUTODYN有限元分析软件建立圆柱装药战斗部数值的SPH（Smoothed Particle Hydrodynamics）分析模型，基于SPH粒子尺寸的收敛性分析以及MOTT破片分布模型的有效性验证分析，以此模型系统深入的开展引爆方式、引爆位置、装药长径比、以及装药量关键因素对爆炸破片分布特性以及威力场特性的影响规律研究。【结果】结果显示：引爆位置与方式主要对圆柱装药战斗部两端破片的速度分布有着明显的影响；装药质量不变，装药长径比在点引爆条件下会对远端破片速度产生较为有限的影响，对破片质量大小的分布影响更为显著；在相同装药长径比下，破片速度随着装药量的增加明显增加，但是该速度增量的提Abstract: [Objective] In order to explore the distribution and power field characteristics of explosive fragmentations of cylindrical warheads, [Method] the SPH (Smoothed Particle Hydrodynamics) in ANSYS/AUTODYN was employed to establish a numerical model of the cylindrical charge warheads. Based on the convergence analysis on the SPH particle size, the MOTT fragment distribution model was used to validate the numerical model. This paper conducted a systematic analysis on the distribution and power field characteristics of fragments by considering the detonation method, detonation position, charge aspect ratio, and charge mass. [Results] The results showed that the
-
Key words:
- explosion mechanics /
- warhead /
- fragmentation distribution /
- fragmentation speed /
-
计量
- 文章访问数: 110
- 被引次数: 0
下载:
