[an error occurred while processing this directive] [an error occurred while processing this directive] [an error occurred while processing this directive]
[an error occurred while processing this directive]

Journal of Projectiles, Rockets, Missiles and Guidance >

2012 , Vol. 32 >Issue 1: 73 - 77

DOI: https://doi.org/10.15892/j.cnki.djzdxb.2012.01.001

PROJECTILES TECHNOLOGY

The Influence of Size and Distance of Cylindrical Shell on Protective Performance of Structure

  • GAO Guangfa ,
  • LI Yongchi ,
  • ZHANG Jie ,
  • WANG Lin
Expand
  • 1 School of Energy and Safety, Anhui University of Science and Technology, Anhui Huainan 232001, China
    2 Department of Modern Mechanics, University of Science and Technology of China, Hefei 230027, China
    3 The Key Laboratory of Safe and Efficient Mining Cosponsored by Anhui Province and Ministry of Education, Anhui Huainan 232001, China

Received date: 2011-01-26

  Online published: 2025-05-29

Fold

Abstract

For the anti-explosion design in protective engineering, attenuation mechanism and evolution law of stress waves in defense layer where cylindrical shells embedded were focused on. Based on many numerical calculations, it has been found that protective performance of the structure is closely related with the radius, diameter-thickness ratio, position of the shell and the arrangement of the shells. The results show that the greater of radius or the diameter thickness ratio the shell has, or the closer to the protected area the shell is, the better protective performance the structure has, and when the horizontal space between the shells decreases, the more effective protection of the structure obtains. When the deformation and crushing resistance are taken into account, half of the radius of the shell is the optimal space between the shells.

Key words： anti-explosion design; mechanics of explosion; cylindrical shell; protective engineering; stress waves

Cite this article

GAO Guangfa , LI Yongchi , ZHANG Jie , WANG Lin . The Influence of Size and Distance of Cylindrical Shell on Protective Performance of Structure[J]. Journal of Projectiles, Rockets, Missiles and Guidance, 2012 , 32(1) : 73 -77 . DOI: 10.15892/j.cnki.djzdxb.2012.01.001

[an error occurred while processing this directive]

References

[1]
李永池 智能防护层设计和地下结构耦合响应研究[R]. 中国国防科学技术报告, 2006.
[2]
赵跃堂, 于小存. 分配层厚度对成层式结构动力响应的影响[J]. 岩石力学与工程学报, 2007,26(增1):3540-3545.
[3]
董永香, 夏昌敬, 段祝平. 平面爆炸波在半无限混凝土介质中传播与衰减特性的数值分析[J]. 工程力学, 2006,23(2):60-65.
[4]
李砚召, 王肖钧, 吴祥云,等. 分配层分层结构对核爆炸载荷的防护效果试验研究[J]. 中国科学技术大学学报, 2009,39(9):931-935.
[5]
赵凯. 分层防护层对爆炸波的衰减和弥散作用研究[D]. 合肥: 中国科学技术大学, 2007.
[6]
王肖钧. 分层防护结构对地下爆炸波的阻尼、耗散和导向作用研究[R]. 中国国防科学技术报告, 2008.
[7]
李永池, 姚磊, 沈俊,等. 空穴的绕射隔离效应和对后方应力波的削弱作用[J]. 爆炸与冲击, 2005,25(3):193-199.
[8]
王志亮, 李永池. 防护层中孔穴对轴向应力波的绕射屏蔽效应研究[J]. 岩土力学, 2005,26(8):1221-1226.
[9]
Wang Zhiliang, Wang JG, Li Yongchi, et al. Attenua-tion effect of artifcial cavity on air-blast waves in an in-telligent defense layer[J]. Computers and Geotechnics, 2006,33(2):132-141.
[10]
高光发, 李永池, 赵凯,等. 柱壳结构的弥散效应及对应力波的削弱作用[J]. 振动与冲击, 2011,30(12):195-200.
[11]
Holmquist TJ, Johnson GR, Cook HW. A computa-tional constitutive model for concrete subjected to largestrains, high strain rates, and high pressures[C]//Proceedings of 14th International Symposium on Ballistics, 1993:591-600.
Options
Outlines

/

〈 〉

[an error occurred while processing this directive]