Numerical simulation of the effect of multiply EPW into engineering rock

Deng Guo-qiang; Yang Xiu-min

doi:10.11883/1001-1455(2014)03-0361-06

Volume 34 Issue 3

Aug. 2014

Turn off MathJax

Article Contents

Article Navigation > Explosion And Shock Waves > 2014 > 34(3): 361-366

Deng Guo-qiang, Yang Xiu-min. Numerical simulation of the effect of multiply EPW into engineering rock[J]. Explosion And Shock Waves, 2014, 34(3): 361-366. doi: 10.11883/1001-1455(2014)03-0361-06

Citation:

Deng Guo-qiang, Yang Xiu-min. Numerical simulation of the effect of multiply EPW into engineering rock[J]. Explosion And Shock Waves, 2014, 34(3): 361-366. doi: 10.11883/1001-1455(2014)03-0361-06

Deng Guo-qiang, Yang Xiu-min. Numerical simulation of the effect of multiply EPW into engineering rock[J]. Explosion And Shock Waves, 2014, 34(3): 361-366. doi: 10.11883/1001-1455(2014)03-0361-06

Citation:

Deng Guo-qiang, Yang Xiu-min. Numerical simulation of the effect of multiply EPW into engineering rock[J]. Explosion And Shock Waves, 2014, 34(3): 361-366. doi: 10.11883/1001-1455(2014)03-0361-06

PDF( 4889 KB)

Numerical simulation of the effect of multiply EPW into engineering rock

doi: 10.11883/1001-1455(2014)03-0361-06

Deng Guo-qiang^,,
Yang Xiu-min

No.4 Engineering Research Institute, GSHQ, Beijing 100850, China

Received Date: 2012-11-22
Rev Recd Date: 2013-05-29
Publish Date: 2014-05-25

Abstract

Abstract

This numerical simulation study was undertaken to investigate the penetration and explosion efficiency of a sequence of precision-guided earth penetrating weapon(EPW)into hard rock target.The main objective of the study was to ascertain the damage depth of using much more EPW, the relative depth would decreases with bomb number decreasing, the ultimate depth was limited.The simulations were performed using EP3D-a 3D explosion and penetration efficiency hydrocode.To describe the engineering rock body on the test site, it was divided into two parts, which were structure body and structure interface.A new rock constitutive model was built up for homogeneous structure body, and moreover, a space block model was brought out, which takes into account the non-homogeneousness of nature rock based on structure interface.Through this model, lots of numerical simulation works were done on repeat attack effect, and the numerical results agreed well with those of experiments, all of them made it clear that the ultimate damage depth of repeated attack was a limited value because of residual fragment, impact deviance and non-homogeneousness of nature rock.
- mechanics of explosion,
- earth penetration weapon,
- repeat attack,
- nature rock,
- limited depth

FullText(HTML)

References(13)

References

[1]	Antoun T H, Lomov I N, Glenn L A. Simulation of the penetration of a sequence of bombs into granitic rock[J]. International Journal of Impact Engineering, 2003, 29(1): 81-94.
[2]	左魁, 张继春, 曾宪明, 等.重复爆炸条件下岩石介质破坏效应试验研究[J].岩石力学与工程学报, 2008, 27(增刊1): 2675-2680. Zuo Kui, Zhang Ji-chun, Zeng Xian-ming, et al. Experimental research on rock breakage effect under repeated explosions[J]. Chinese Journal of Rock Mechanics and Engineering, 2008, 27(suppl 1): 2675-2680.
[3]	邓国强, 杨秀敏.钻地弹重复打击效应现场试验研究[J].防护工程, 2012, 34(5): 1-5. Deng Guo-qiang, Yang Xiu-min. Experimental investigation into damage effect of repeat attack of precision-guided penetration weapon[J]. Protective Engineering, 2012, 34(5): 1-5.
[4]	杨秀敏.爆炸冲击现象数值模拟[M].合肥: 中国科技大学出版社, 2010.
[5]	Century Dynamics Inc. Ansys autodyn user manual[M]. Version 11.0. USA California, 2007.
[6]	Livermore Software Technology Corporation. Ls-dyna keyword user's manual[M]. Version 971.Rev5. USA California, 2010.
[7]	Polanco-Loria M, Hopperstad O S, Børvik T, et al. Numerical predictions of ballistic limits for concrete slabs using a modified version of the HJC concrete model[J]. International Journal of Impact Engineering, 2008, 35(5): 290-303. doi: 10.1016/j.ijimpeng.2007.03.001
[8]	Grady D E, Kipp M E. The micromechanics of impact fracture of rock[J]∥International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 1979, 16(5): 293-302.
[9]	杨军, 金乾坤.应力波衰减基础上的爆破损伤模型[J].爆炸与冲击, 2000, 20(3): 241-246. doi: 10.3321/j.issn:1001-1455.2000.03.008 Yang Jun, Jin Qian-kun. Blast damage model based on stress wave attenuation[J]. Explosion and Shock Waves, 2000, 20(3): 241-246. doi: 10.3321/j.issn:1001-1455.2000.03.008
[10]	王志亮, 郑明新.基于TCK损伤本构的岩石爆破效应数值模拟[J].岩土力学, 2008, 29(1): 230-234. doi: 10.3969/j.issn.1000-7598.2008.01.043 Wang Zhi-liang, Zheng Ming-xin. Numerical simulation of effect of rock blasting based on TCK damage constitutive model[J]. Rock and Soil Mechanics, 2008, 29(1): 230-234. doi: 10.3969/j.issn.1000-7598.2008.01.043
[11]	邓国强, 杨秀敏, 金乾坤.侵彻爆炸效应数值计算新型岩石本构模型[J].兵工学报, 2012, 33(增刊2): 375-380. Deng Guo-qiang, Yang Xiu-min, Jin Qian-kun. A computational constitutive model for rock subjected to penetration and explosion loading[J]. Acta Armamentarii, 2012, 33(suppl 2): 375-380.
[12]	Atkinson B K. Fracture mechanics of rock[M]. London: Academic Press, 1987.
[13]	吴亮, 卢文波, 宗琦.岩石中柱状装药爆炸能量分布[J].岩石力学, 2006, 27(5): 735-739. Wu Liang, Lu Wen-bo, Zong Qi. Distribution of explosive energy consumed by column charge in rock[J]. Rock and Soil Mechanics, 2006, 27(5): 735-739.