Investigation into Attenuation of Underwater Shock Wave by Air Interlayer Using Material Point Method

Abstract:

The performance of air interlayer on attenuating the explosion shock wave is investigated by using the material point method. To verify the numerical method, the detonation process in one water medium only was considered. The numerical results were in good agreement with the data calculated by the empirical formula and demonstrated the effectiveness of material point method. A series of two-dimensional simulations of underwater explosion with the air interlayer were studied. The research shows that the air interlayer can attenuate the underwater explosion shock wave effectually.

• Periodical: Applied Mechanics and Materials (Volumes 246-247)
• Pages: 527-531
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.246-247.527
• Online since: December 2012
• Authors: Wei Dong Chen, Wen Miao Yang, Xue Kui Liu
• Keywords: Air Interlayer, Material Point Method, Shock Wave Attenuation, Underwater Explosion

References

[1] Fan Zijian, Shen Zhaowu, Ma Honghao and Liao Xueyan. Experimental study on attenuation of underwater shock wave by air interlayer. Journal of university of science and technology of China Vol. 37 (2007), pp.1306-1311.

[2] Fan Zijian, Shen Zhaowu and Ma Honghao. Primary study on attenuation of underwater shock wave by using air insulation. Engineering blasting Vol. 13 (2007), pp.7-10.

[3] Jia Hu and Shen Zhaowu. An investigation into attenuation of underwater shockwave by air interlayer. Explosion and shock waves Vol. 32(2012), pp.61-66.

[4] Yao Xiongliang, Yang Wenshan, Chu Wenhua and Zhang A-man. Research on performance of the underwater air buffer weakening shock wave. Chinses journal of high pressure physics Vol. 25(2011), pp.165-172.

[5] D. Sulsky, Z. Chen, and H.L. Schreyer. A particle method for history -dependent materials. Computer Methods in Applied Mechanics and Engineering Vol. 118(1994), pp.179-196.

DOI: 10.1016/0045-7825(94)90112-0