全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
含能材料  2015 

爆炸驱动燃料抛散的非理想化特征

DOI: 10.11943/j.issn.1006-9941.2015.04.004

Keywords: 燃料空气炸药(FAE) 不耦合系数 偏移 弱化

Full-Text   Cite this paper   Add to My Lib

Abstract:

利用LS-DYNA对燃料空气炸药(FAE)装置中心装药不耦合系数(De)的最佳值、中心装药偏移和壳体单侧弱化所引起的燃料抛散的非对称性特征进行了研究。计算结果表明:中心装药的不耦合系数并非越大越好,在本研究中,De=2时最佳; 中心装药负偏移2 mm时,燃料在正方向抛散速度增大6 m·s-1,在负方向的抛散速度减小13 m·s-1,负偏移量增大,负方向抛散速度减小和正方向抛散速度增大的趋势更加明显,说明中心装药的偏移对FAE燃料的抛散有同向抑制,反向促进作用; FAE装置壳体出现单侧弱化时,装置两侧燃料的抛散速度都降低,同等条件下,采用聚氯乙烯壳体的FAE装置两侧燃料抛散速度减小程度小于采用钢制壳体的FAE装置,这说明速度的减小在使用弱约束时表现轻微,使用强约束时表现显著

References

[1]  Samirant M,Smeets G,Baras C, et al.Dynamic measure in combustible and detonable aerosols[J].Propellants, Explosives,Pyrotechnics, 1989,14: 47-56.
[2]  张奇,白春华,刘庆明,等.壳体对燃料近区抛散速度的影响[J].应用力学学报,2000,17(3): 102-106.ZHANG Qi, BAI Chun-hua, LIU Qing-ming, et al.Influence of shell casting on fuel near-field dispersal velocity [J].Chinese Journal of Applied Mechanics, 2000,17(3): 102-106.
[3]  罗艾民, 张奇, 李建平, 等.爆炸驱动下固体燃料分散过程的计算分析[J].北京理工大学学报,2005,25(2): 103-107.LUO Ai-min, ZHANG Qi, LI Jian-ping, et al.Computational analysis of dispersion process of explosively driven solid fuel [J].Journal of Beijing Institute of Technology, 2005,25(2): 103-107.
[4]  Gardner D R.Near-field dispersal modeling for Fuel-air-explosive[R].SAND 90-0686: 1990.
[5]  Glass M W.Far-field dispersal modeling for Fuel-air-explosive[R].SAND 90-0528: 1990.
[6]  Gardner D R.Glass M W.A coupled near-field dispersal model for Fuel-air-explosive[R].SAND 90-0687: 1990.
[7]  丁珏,刘家骢.液体燃料爆炸抛散和FAE形成过程的数值仿真[J].南京理工大学学报,2000,24(2): 168-171.DING Jue, LIU Jia-cong.Numerical study on the whole process of explosive dispersal for forming liquid-air cloud[J].Journal of Nanjing University of Science and Technology, 2000,24(2): 168-171.
[8]  张奇,白春华,刘庆明,等.不耦合装药爆炸作用下燃料空气炸药的近区抛散[J].弹道学报,2000,12(2): 22-25.ZHANG Qi, BAI Chun-hua, LIU Qing-ming, et al.Near-field dispersal of FAE fuel under load of uncoupling charge in center pipe [J].Journal of Ballistics,2000,12(2): 22-25.
[9]  史远通, 张奇.中心装药对燃料抛散的影响及其空腔效应研究[J].含能材料,2014,22(3): 353-358.SHI Yuan-tong, ZHANG, Qi.The research of center explosive charge for fuel dispersal and its cavity effect[J].Chinese Journal of Energetic Materials(Hanneng Cailliao), 2014,22(3): 353-358.
[10]  王飞,白春华,闫华.壳体厚度对大口径FAE战斗部效应仿真研究[J].弹箭与制导学报,2003,28(3): 110-112.WANG Fei, BAI Chun-hua, YAN Hua.The study for the effect of the thickness of cylindrical shell on the fuel dispersing in the FAE warhead design by simulation [J].Journal of Projectiles; Rockets; Missiles and Guidance,2003,28(3): 110-112.
[11]  LSTC inc.LS-DYNA keyword user′s manual (Nonlinear dynamic analysis of structures, Version 960)[CP], May 2001.
[12]  辛春亮, 秦健, 徐更光, 等.基于LS-DYNA软件的水下爆炸数值模拟研究[J].弹箭与制导学报,2007,28(3): 156-158.XIN Chun-liang, QIN Jian, XU Geng-guang,et al.Research on UNDEX numerical simulation based on LS-DYNA [J].Journal of Projectiles; Rockets; Missiles and Guidance,2007,28(3): 156-158.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133