[1]李伟兵,王晓鸣,李文彬,等.隔栅对EFP破片成型及侵彻的影响[J].南京理工大学学报(自然科学版),2009,(05):586-591.
 LI Wei-bing,WANG Xiao-ming,LI Wen-bin,et al.Effect of Metal Bar on Formation and Penetration of EFP Fragment[J].Journal of Nanjing University of Science and Technology,2009,(05):586-591.
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隔栅对EFP破片成型及侵彻的影响
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《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

卷:
期数:
2009年05期
页码:
586-591
栏目:
出版日期:
2009-10-30

文章信息/Info

Title:
Effect of Metal Bar on Formation and Penetration of EFP Fragment
作者:
李伟兵 1 王晓鸣 1 李文彬 1 汪得功 2
1. 南京理工大学机械工程学院,江苏南京210094; 2. 中国兵器工业集团第五三研究所, 山东济南250031
Author(s):
LI Wei-bing1WANG Xiao-ming1LI Wen-bin1WANG De-gong2
1.School of Mechanical Engineering,NUST,Nanjing 210094,China;2.The 53rd Institute of China North Industries Group Corporation,Jinan 250031,China
关键词:
爆炸成型弹丸 破片 金属隔栅 数值模拟
Keywords:
explosively formed penetrator fragments metal bars numerical simulation
分类号:
TJ410.52
摘要:
采用在成型装药前端加装金属隔栅的方法形成爆炸成型弹丸(EFP)破片模态,利用LS-DYNA程序仿真研究了隔栅对EFP破片成型及侵彻的影响,得到隔栅位置和结构对形成EFP破片速度和飞散情况的影响规律。研究结果表明,隔栅单元格边长为0.2倍装药口径、隔栅与药型罩端部之间的距离为1/12倍装药口径时,形成的EFP破片速度和散布面积较佳。采用优化的隔栅结构进行试验,试验与数值模拟结果吻合较好,说明该文结果可为多模成型装药的进一步研究提供参考。
Abstract:
The explosively formed penetrator(EFP) fragment mode is formed by attaching metal bar to the front of a warhead.Through LS-DYNA simulation procedure,the influence of a metal bar on the formation and penetration of EFP fragments is researched,and the effect of the position and framework of a bar on the velocity and spray pattern of EFP fragments is gained.The results show that: when the unit grid’s size of bar is 0.2 times of the charge caliber,and the distance between bar and liner is 1/12 times of the charge caliber,it can form EFP fragments with good velocity and spray pattern.The structure of a metal bar is optimized and tested.The simulation results are in good agreement with the experimental data.The result can offer reference for the further study of multimode shaped charge.

参考文献/References:

[ 1] 吴义锋. 点环起爆多模成型装药机理研究[D]. 南京: 南京理工大学机械工程学院, 2007.
[ 2] 李伟兵, 王晓鸣,李文彬, 等. 药型罩结构参数对多模毁伤元形成的影响[ J]. 弹道学报, 2009, 21( 1): 19- 23.
[ 3] 尹建平, 常变红, 王志军. 多爆炸成型弹丸设计参数对智能雷毁伤概率的影响[ J]. 弹道学报, 2007, 19( 2): 58- 61.
[ 4] 周翔, 龙源,余道强, 等. 多弹头爆炸成形弹丸数值仿真及发散角影响因素[ J]. 兵工学报, 2006, 27( 1): 23-26.
[ 5] Fong R, NgW, Rice B, et a.l Multiple explosively formedpenetrator (MEFP) warhead technology deve-l opment [A]. TheProceedingsof the19thInternation-alSymposiumonBallistics[C]. Interlaken: The19th International Symposium on Ballistics, 2001. 563 -568.
[ 6] Bender D, FongR, NgW, et a.l Dualmodewarhead technology for future smart munitions[A]. The Pro-ceedings of the 19th International SymposiumonBa-l listics[ C]. Interlaken: The 19thInternational Sympo-siumonBallistics, 2001. 679-684.
[ 7] 何涛,杨竞, 金鑫, 等. ANSYS10. 0/LS-DYNA非线性有限元分析实例指导教程[M]. 北京:机械工业出版社, 2007.
[ 8] Fong R, Fuchs B, NgW, et a.l New, selectable, EFPwarhead concept[ A]. The Proceedings of the 41st Annual Bomb andWarhead Technical Meeting [ C]. San Diego: Naval Ocean Systems Center, 1991. 172-197.

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备注/Memo

备注/Memo:
基金项目: 江苏省2009年度普通高校研究生科研创新项目( XC09E_087Z)
作者简介:李伟兵( 1982- ),男, 博士生,主要研究方向:弹药战斗部设计与目标毁伤技术, E-mail:njustlwb@163. com;
通讯作者: 王晓鸣( 1962- ), 男, 教授, 博士生导师, 主要研究方向: 弹药工程, E-mail: 202xm@ 163. com。
更新日期/Last Update: 2012-11-19