偏心起爆战斗部随机破片数值仿真

张博; 李伟兵; 李文彬; 王晓鸣; 高旭东; 郑宇

doi:10.11858/gywlxb.2012.04.013

偏心起爆战斗部随机破片数值仿真

doi: 10.11858/gywlxb.2012.04.013

南京理工大学智能弹药技术国防重点学科实验室，江苏南京 210094

详细信息

通讯作者:
张博 E-mail:edward-sun@163.com

计量
- 文章访问数: 6836
- HTML全文浏览量: 360
- PDF下载量: 557
出版历程
- 收稿日期: 2010-11-29
- 修回日期: 2011-02-14
- 发布日期: 2012-08-15

Numerical Simulation of the Dispersion of Random Fragments under Asymmetrical Initiation

ZNDY of Ministerial Key Laboratory, Nanjing University of Science and Technology, Nanjing 210094, China

摘要

摘要: 利用AUTODYN-3D软件和基于Mott破片分布理论的Stochastic随机破碎模型，对破碎型偏心起爆战斗部的破片形成进行了三维数值模拟，对比分析了3种起爆方式下自然破片的飞散特性以及偏心起爆时不同起爆半径随机破片的飞散特性。结果表明：偏心单点和偏心多点起爆在目标区域产生的破片数比中心点起爆分别提高了37.12%和62.86%，且破片质量小，破片的利用率可以提高4.01%~6.08%；偏心单点和偏心多点起爆的平均速度增益为25.95%和28.37%；对于偏心起爆，随着起爆半径的减小，目标区域的随机破片数减小，轴向速度和径向速度也随之减小。
- 随机破片 /
- 偏心起爆 /
- 中心点起爆 /
- 飞散特性 /
- 起爆半径
Abstract: Using AUTODYN-3D and the Stochastic random fragmentation model which based on the Mott's fragment distribution law, the scattering properties of the warhead fragments are numerically simulated and analyzed under three different ways of initiation including center point initiation, asymmetrical single point initiation and asymmetrical multi-point initiation. The results show that compared with center point initiation, the numbers of random fragments in the target area produced under asymmetrical single point initiation and asymmetrical multi-point initiation are increased by 37.12% and 62.86%, the availabilities of the fragments are improved by 4.01%-6.08%, and the average velocity gains are 25.95% and 28.37% respectively. Furthermore, the effects of the initiation radius on the scattering properties of the random fragments are obtained under asymmetrical initiation. It is shown that the numbers of fragments in the target area, the axial velocity and radial velocity are all reduced with the initiation radius increasing.
- random fragment /
- asymmetrical initiation /
- center point initiation /
- scattering property /
- initiation radius

HTML全文

参考文献(13)

Yan H X, Jiang C L, Li M, et al. Numerical simulation of effect of different initiation positions on a certain focusing fragment warhead [J]. Chinese Journal of Energetic Materials, 2009, 17(2): 143-146. (in Chinese)

严翰新, 姜春兰, 李明, 等. 不同起爆方式对聚焦战斗部性能影响的数值模拟 [J]. 含能材料, 2009, 17(2): 143-146.

Wang S S, Ma X F, Sui S Y, et al. Experimental research on fragments dispersion of the warhead under asymmetrical multi-spots initiation [J]. Journal of Beijing Institute of Technology, 2001, 21(2): 177-179. (in Chinese)

王树山, 马晓飞, 隋树元, 等. 偏心多点起爆战斗部破片飞散实验研究 [J]. 北京理工大学学报, 2001, 21(2): 177-179.

Ye X J, Han Y, Chen Q B. Numerical simulation and experiment of velocity gains on the non-central detonation warhead [J]. Chinese Journal of Explosives Propellants, 2009, 32(3): 29-34. (in Chinese)

叶小军, 韩玉, 陈庆宝. 偏心起爆战斗部速度增益的数值模拟及实验 [J]. 火炸药学报, 2009, 32(3): 29-34.

Interactive Non-Linear Synamic Analysis Software AUTODYNTM User Manual [M]. Houston, Texas, US: Century Dynamics Inc, 2003.

Jonathan P G, Greg F, Colin H. Norman robertson numerical simulation of fragmentation using AUTODYN-2D 3D in explosive ordnance safety assessment [A]//The 6th PARARI International Explosive Ordnance Symposium [C]. Canberra, Australia, 2003: 2-8.

Kennedy D R. A historical review of aimable air defense warhead technology [A]//The 18th International Symposium on Ballistics [C]. San Antonio, Texas, US, 1999: 618-625.

Jiang J W, Zhang M, Men J B, et al. Numerical simulation of penetration process for PELE projectile against target [J]. Chinese Journal of Computational Mechanics, 2009, 26(4): 568-572. (in Chinese)

蒋建伟, 张谋, 门建兵, 等. PELE弹侵彻过程壳体膨胀破裂的数值模拟 [J]. 计算力学学报, 2009, 26(4): 568-572.

Li X Y, Lu F Y. Numerical simulation on fragments dispersion of three type warheads [J]. Chinese Journal of Explosives Propellants, 2007, 30(1): 44-48. (in Chinese)

李翔宇, 卢芳云. 三种类型战斗部破片飞散的数值模拟 [J]. 火炸药学报, 2007, 30(1): 44-48.

施引文献

资源附件(0)

访问统计