CHINESE JOURNAL OF ENERGETIC MATERIALS
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Attenuation Characteristics of Underwater Explosion Bubble Curtain on the Shock
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(1. School of Civil Engineering and Architecture, Nanyang Normal University, Nanyang 473061, China; 2. Department of Modern Mechanic, University of Science and Technology of China,Hefei 230027, China )

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    Abstract:

    Based on the traditional shock absorption technology of air bubbles curtain, a new energy attenuation idea about air bubbles curtain generated by blasting was put forward. According to the conditions in the paper, the experiment was carried on to test this energy attenuation idea. Results showed that the explosion air bubbles curtain can reduce the peak pressure of shock wave, and the signal attenuation is as high as 60%, the specific impulse of shock wave by 62.2%. When wavelet packet decomposition technique is adopted to judge the attenuate effect of explosion air bubbles curtain, it can be concluded that explosion air bubbles curtain can attenuate different frequency shock wave effectively. Most shock waves of different frequency can be attenuated by more than 50%. Explosion air bubbles curtain can eliminate the high frequency part of the underwater explosion shock wave effectively. Only the low frequency part can pass the explosion air bubbles curtain, but the energy of it can be also weakened greatly.

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贾虎,郑伟花,罗强,等.爆炸气泡帷幕对水中冲击波能量的衰减特性[J].含能材料,2015,23(10):1015-1019.
JIA Hu, ZHENG Wei-hua, LUO Qiang, et al. Attenuation Characteristics of Underwater Explosion Bubble Curtain on the Shock[J]. Chinese Journal of Energetic Materials,2015,23(10):1015-1019.

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History
  • Received:July 21,2014
  • Revised:February 04,2015
  • Adopted:January 08,2015
  • Online: September 01,2015
  • Published: September 10,2015