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...

高速杆式弹丸三维数值模拟

DOI: 10.11858/gywlxb.2007.02.008, PP. 165-172

Keywords: 爆炸力学,高速杆式弹丸,变球缺型药型罩,起爆方式,数值模拟

Full-Text   Cite this paper   Add to My Lib

Abstract:

应用LS-DYNA动力学分析软件对变球缺型罩装药结构下高速杆式弹丸的形成过程进行数值模拟研究,揭示了其成型机理,并研究了中心点起爆、四点同时起爆和环形起爆等三种起爆方式对高速杆式侵彻体的成型和性能参数的影响,得到了弹体的速度分布。数值计算结果显示:变球缺型罩装药结构能形成速度高、长径比大、质量分布合理的高速杆式侵彻体,其成型机理兼有聚能射流和翻转型爆炸成型弹丸的特点,即上半部罩微元直接向轴线压合,下半部罩微元向轴线压合时逐渐向后翻转变形。不同起爆方式下所形成的高速杆式弹丸的形状和性能参数有所不同,其中环形起爆所形成的弹体性能参数最优。实验结果所反映的起爆方式的影响规律与数值计算结果是一致的。

References

[1]  Whelan A J, Furnisss D R, Townsley R G. Experimental and Simulated (Analytical & Numerical) Elliptical-Form Shaped Charges [A]//20th International Symposium on Ballistics [C]. Florida: National Defense Industrial Association, 2002: 446-454.
[2]  Baker E L. A Sdaniels. Selectable Initiation Shaped Charges [A]//20th International Symposium on Ballistics [C]. Florida: National Defense Industrial Association, 2002: 436-449.
[3]  Blache A, Weimann K. Shaped Charge with Jetting Projectile for Extended Targets [A]//van Niekerk C. 17th International Symposium on Ballistics [C]. Midrand, South Africa: The South African Ballistic Organization, 1998: 207-216.
[4]  Mattsson K, Sorensen N, Ouve R, et al. Development of the K-Charge, a Short L/D Shaped Charge [A]//. Reinecke W G. 18th International Symposium on Ballistics [C]. San Antonio, Texas: Terminal Ballistics Vulnerability Wound Ballistics, 1999: 528-534.
[5]  Tan D W, Sun C W. Zhao J B, et al. Experimental Investigation of Shaped Charge with Large Cone Angle [J]. Chinese Journal of High Pressure Physics, 2003, 17(3): 204-208. (in Chinese)
[6]  谭多望, 孙承纬, 赵继波, 等. 大锥角聚能装药实验研究 [J]. 高压物理学报, 2003, 17(3): 204-208.
[7]  Wang H F, Jiang Z R, Yu W M, et al. Behavior of Jetting Penetrator Charge Operating Underwater [J]. Transactions of Beijing Institute of Technology, 2006, 26(3): 189-192. (in Chinese)
[8]  王海福, 江增荣, 俞为民, 等. 杆式射流装药水下作用行为研究 [J]. 北京理工大学学报, 2006, 26(3): 189-192.
[9]  Duan Z P, Wu H L, Wang Y Q. Numerical Simulation of Rod-Liked Jet Formation [A]//CCTAM-2005 [C]. Beijing, 2005: 562-569 (in Chinese)
[10]  段卓平, 吴晗玲, 汪永庆. 杆式射流形成的数值模拟研究 [A]//中国力学学会学术大会-2005 [C]. 北京, 2005: 562-569.
[11]  Huerta M, Vigil M G. Design, Analyses, and Field Test of a 0. 7 m Conical Shaped Charge [J]. Int J Impact Eng, 2006, 32: 1201-1213.
[12]  Dobratza B M. Properties of Chemical Explosives and Explosive Simulants [R]. UCRL-51319, 1974.
[13]  Steinberg D J. Equation of State and Strength Properties of Selected Material [M]. LLNL, 1991.
[14]  Jones N. Structural Aspects of ship Collisions [A]//Jones N, Wierzbicki T. Structural Crashworthiness [C]. London: Butterworths, 1983: 308-337.
[15]  Johnson G R, Cook W H. Fracture Characteristics of Three Metals Subjected to Various Strains, Strain rates, Temperatures, and Pressures [J]. Engeering Fracture Mechanics, 1985, 21(1): 31-48.
[16]  Livermore. LS-DYNA Keyword User's Manual [DB]. California: Livermore Software Technology Corporation, 2001: 610-1026.
[17]  Gui Y L, Yu C, Liu C L. 3D Simulation of Over-Turned Explosively Formed Projectile (EFP) with Star- Shaped Fins [J]. Explosion and Shock Waves, 2005, 25(4): 313-318. (in Chinese)
[18]  桂毓林, 于川, 刘仓理. 带尾翼的翻转型爆炸成型弹丸的三维数值模拟 [J]. 爆炸与冲击, 2005, 25(4): 313-318.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133