长径比对长杆弹垂直侵彻能力影响机制的研究

高光发; 李永池; 黄瑞源; 段士伟

doi:10.11858/gywlxb.2011.04.007

长径比对长杆弹垂直侵彻能力影响机制的研究

doi: 10.11858/gywlxb.2011.04.007

1.
安徽理工大学能源与安全学院，安徽淮南 232001；
2.
中国科学技术大学近代力学系，安徽合肥 230027；
3.
煤矿安全高效开采省部共建教育部重点实验室，安徽淮南 232001

详细信息

通讯作者:
李永池

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出版历程
- 收稿日期: 2010-04-06
- 修回日期: 2010-09-04
- 发布日期: 2011-08-15

Study on Effect Mechanism of Aspect Ratio for Vertical Penetration of a Long-Rod Projectile

1.
School of Energy and Safety, Anhui University of Science and Technology, Huainan 232001, China;
2.
Department of Modern Mechanics, University of Science and Technology of China, Hefei 230027, China;
3.
Key Laboratory of Safe and Efficient Mining Cosponsored by Anhui Province and Ministry of Education, Huainan 232001, China

More Information

Corresponding author: LI Yong-Chi

摘要

摘要: 以长杆弹垂直侵彻半无限靶为研究对象，利用量纲理论，分析了影响侵彻深度的主要因素，采用经验公式和数值仿真对长杆弹侵彻机理进行了系统研究。结果表明：要达到同样的侵彻效率，长径比的增加会增大单位侵彻深度所耗的能量密度；对于具有相同体积的不同弹体，侵彻深度随长径比增加而增大，直至达到某一最大值。研究发现，造成这种现象的主要原因是侵彻过程中后续不稳定阶段产生的漏斗形弹坑和高温影响弹体侵彻，虽然交界面对侵彻深度的影响较大，但与长径比对侵彻效率的影响无明显关系。
- 侵彻 /
- 长径比 /
- 侵彻效率 /
- 侵彻深度
Abstract: The penetration depth is analyzed for a long-rod projectile penetrating semi-infinite target using dimensional theory. Combining numerical simulation and empirical formula studies, the effect mechanism of aspect ratio is systematically investigated. The results show that the normalized energy density consumption by penetration depth increases as increasing of aspect ratio when the penetration efficiency does not change. For the long-rod penetrators with same volume, the penetration depth increases with the increasing of aspect ratio until reaches a maximum value. The main reason of this phenomenon is due to the funnel-shaped crater and high-temperature generated in subsequent unstable stage of penetration. The interface resistance effect has strong influence on the penetration depth, but which has no apparent connection with the aspect ratio of penetrator.
- penetration /
- aspect ratio /
- penetration efficiency /
- penetration depth

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参考文献(15)

Rosenberg Z, Dekel E. A Computational Study of the Relations between Material Properties of Long-Rod Penetrators and Their Ballistic Performance [J]. Int J Impact Eng, 1998, 21(4): 283-296.

Anderson C E Jr, Littlefield D L, Blaylock N W, et al. The Penetration Performance of Short L/D Projectiles [J]. AIP Conference Proceedings, 1994, 309: 1809-1812.

Hohler V, Stilp A J. Hypervelocity Impact of Rod Projectiles with L/D from 1 to 32 [J]. Int J Impact Eng, 1987, 5(1-4): 323-331.

Partom Y, Yaziv D. Penetration of L/D=10 and 20 Tungsten Alloy Projectiles into RHA Targets [J]. AIP Conference Proceedings, 1994, 309: 1801-1804.

Anderson C E Jr, Walker J D, Bless S J, et al. On the Velocity Dependence of the L/D Effect for Long-Rod Penetrators [J]. Int J Impact Eng, 1995, 17(1-3): 13-24.

Anderson C E Jr, Walker J D, Bless S J, et al. On the L/D Effect for Long-Rod Penetrators [J]. Int J Impact Eng, 1996, 18(3): 247-264.

Du Z H, Zeng G Q, Yu C X, et al. Experimental Research of Novel Penetrator Vertically Penetrating Semi-Infinite Target [J]. Journal of Ballistics, 2008, 20(1): 19-21. (in Chinese)

杜忠华, 曾国强, 余春祥, 等. 异型侵彻体垂直侵彻半无限靶板试验研究 [J]. 弹道学报, 2008, 20(1): 19-21.

LS-DYNA Theoretical Manual [Z]. California: Livermore Software Technology Corporation, 1998.

Johnson G R, Cook W H. A Constitutive Model and Data for Metals Subjected to Large Strains, High Strain Rates and High Temperatures [A]//Proceedings of the 7th International Symposium on Ballistics [C]. Hague, Netherlands, 1983: 541-547.

Johnson G R, Cook W H. Fracture Characteristics of Three Metals Subjected to Various Strains, Strain Rates, Temperatures and Pressures [J]. Eng Fract Mech, 1985, 21(1): 31-48.

Anderson C E Jr, Hohler V, Walker J D, et al. Time-Resolved Penetration of Long Rods into Steel Targets [J]. Int J Impact Eng, 1995, 16(1): 1-18.

Anderson C E Jr, Walker J D. An Analytical Model for Dwell and Interface Defeat [J]. Int J Impact Eng, 2005, 31(9): 1119-1132.

Orphal D L, Anderson C E Jr. The Dependence of Penetration Velocity on Impact Velocity [J]. Int J Impact Eng, 2006, 33(1-2): 546-554.

Walker J D, Anderson C E. A Time-Dependent Model for Long-Rod Penetration [J]. Int J Impact Eng, 1995, 16(1): 19-48.

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文章访问数: 7927
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PDF下载量: 661

长径比对长杆弹垂直侵彻能力影响机制的研究

doi: 10.11858/gywlxb.2011.04.007

通讯作者: 李永池

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出版历程

Study on Effect Mechanism of Aspect Ratio for Vertical Penetration of a Long-Rod Projectile

Corresponding author: LI Yong-Chi

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出版历程

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通讯作者:
李永池