Clipping Performance of the Structure with Cavities under Plane Impact Loads

Abstract:

An advanced structure containing cavities was adopted in distribution layers. A series of large-scale similarity-simulation tests was conducted on the defense effect of the four structures under plane impact loads. Based on the tests results and theoretical analysis conclusions, numerical simulations were developed by LS-DYNA software. The results indicate that the numerical results agree well with the test data; the stress peak was distinctively decayed below the cavities, and the defense effect of circle-section cavity is more effective than square-section cavity while the defense effect was weakened when a thin steel plate was laid above the cavities. Compared with clipping performance of it under the explosion loads of mass ammunition, which of the structure with cavities under plane impact loads is better effective. This work provides an important basis for designing the scientifically safe distribution layers.

• Periodical: Applied Mechanics and Materials (Volume 274)
• Pages: 204-207
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.274.204
• Online since: January 2013
• Authors: Guang Fa Gao, Yong Chi Li, Shu Jie Yuan, Xu Yang Li
• Keywords: Anti-Explosion Design, Cavity, Distribution Layers, Engineering Research, Impact Resistance, Mechanics of Explosion, Nuclear Explosive

References

[1] Wang Zhi-liang, Li Yong-chi, Wang J G. Study of stress waves in geomedia and effect of a soil cover layer on wave attenuation using a 1-D finite-difference method[J]. Computers & Geosciences, 2006, 32: 1535–1543.

DOI: 10.1016/j.cageo.2005.10.016

[2] DONG Yongxiang, XIA Changjing, DUAN Zhuping. Numerical analysis of plane explosive wave propagation with its attenuation behavior in semi-infinite medium[J]. Engineering Mechanics, 2006, 23（2）: 60-65.

[3] LI Yanzhao, WANG Xiaojun, WU Xiangyun, et al. Test study on layered structure's defense effect of distribution layer against nuclear explosive loadings[J]. Journal of University of Science and Technology of China, 2009, 39（9）: 931-935.

[4] Gao Guang-fa. Research on several scientific rules in protective engineering and the mechanism analysis [D]. [Doctor], Hefei: University of Science and Technology of China, 2010: 100-112.

[5] Gao Guang-fa, Li Yong-chi, Luo Wen-chao, et al. Clipping performance of advanced structure under explosion of mass ammunition[J]. Journal of Civil, Architectural & Environmental Engineering, 2011, 33(3): 57-62.

[6] Gao Guang-fa, Li Yong-chi, Yao Lei, et al. Test study on cavity structure's defense effect against nuclear explosion loadings[J]. China Civil Engineering Journal, 2010, 43(supp): 490-464.