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Chinese Journal of High Pressure Physics  > 2011  >  25(2): 165-172 .
YAO Xiong-Liang, YANG Wen-Shan, CHU Wen-Hua, ZHANG A-Man. Research on Performance of the Underwater Air Buffer Weakening Shock Wave[J]. Chinese Journal of High Pressure Physics, 2011, 25(2): 165-172 . doi: 10.11858/gywlxb.2011.02.013
Citation: YAO Xiong-Liang, YANG Wen-Shan, CHU Wen-Hua, ZHANG A-Man. Research on Performance of the Underwater Air Buffer Weakening Shock Wave[J]. Chinese Journal of High Pressure Physics, 2011, 25(2): 165-172 . doi: 10.11858/gywlxb.2011.02.013
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Research on Performance of the Underwater Air Buffer Weakening Shock Wave

doi: 10.11858/gywlxb.2011.02.013

  • College of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, China

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  • Corresponding author: YANG Wen-Shan
  • Received Date: 13 Oct 2009
  • Rev Recd Date: 08 Jul 2010
  • Publish Date: 15 Apr 2011
    Abstract
  • Based on the characteristics of the damage on the ship caused by the torpedo, the numerical model of multi-medium underwater explosions was established, where the methods of treating interface and calculating generalized smooth length were presented. According to this new model, the programs of multi-medium underwater explosions were worked out, and a quantitative analysis was made on the performance of the underwater air buffer weakening shock wave. The results show that the shock wave can be significantly attenuated by the air buffer, whether in contact explosions or non-contact explosions. And the attenuation effect of the air buffer in contact explosions is better than that in non-contact explosions. The pressure peak of the shock wave can be decreased by nearly 55% by the air buffer in contact explosions. When the ratio between the thickness of the air buffer and explosion equals 1, the effect of the air buffer on weakening shock wave is obvious, and further increasing the thickness of the air buffer has little influence on the attenuation effect. The research results will provide reference for the structure design of the ship protection system and torpedo defense cabin.

     

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