|Table of Contents|

Analysis of acoustic characteristics of sequential underwater explosion

《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

Issue:
2015年02期
Page:
144-148
Research Field:
Publishing date:

Info

Title:
Analysis of acoustic characteristics of sequential underwater explosion
Author(s):
Pei Shanbao12Liu Rongzhong1Guo Rui1
(1.School of Mechanical Engineering,NUST,Nanjing 210094,China; 2.School of Mechanical Engineering,Anhui University of Technology,Maanshan 243000,China)
Keywords:
sequential underwater explosion acoustic characteristics acoustic source energy distribution underwater acoustic interference
PACS:
O389; TB561
DOI:
-
Abstract:
In order to study the underwater acoustic characteristics of the sequential underwater explosion,sequential underwater explosions with the interval time are tested and measured as the acoustic signal.According to the acoustic signal based on the obtained data,the attenuation and propagation characteristics of the shock wave of the sequential underwater explosion and the acoustic duration,sound pressure level and acoustic energy distribution of the signal are studied.Researches show that,the sequential underwater explosion can produce strong acoustic power,acoustic duration is the sum of interval time of the individual explosive unit,the signal frequency range is very wide,and the acoustic energy is mainly centralized in the frequency area under 24 kHz while the higher energy band is in the low frequency band.Results also show that the sequential underwater explosion is an acoustic source with the high power,the wide bandwidth and the long acoustic duration and it plays an important role in the underwater acoustic interference.

References:

[1] Weston D E.Underwater explosions as acoustic source[J].Proceedings of the Physical Society,1960,76(2):233-249.
[2]潘正伟,焦善武,顾晓辉.水下爆炸—高功率宽频带的水声干扰源[J].南京理工大学学报,1999,23(6):507-509.
Pan Zhengwei,Jiao Shanwu,Gu Xiaohui.Underwater explosion is an acoustic interference source with high power and wide band[J].Journal of Nanjing University of Science and Technology,1999,23(6):507-509.
[3]吴成,廖莎莎,李华新,等.水下爆炸的一些声学特性分析[J].北京理工大学学报,2008,28(8):719-722.
Wu Chen,Liao Shasha,Li Huaxin,et al.Analysis of acoustic characteristics for the charge underwater explosion[J].Journal of Beijing Institute of Technology,2008,28(8):719-722.
[4]吴成,廖莎莎,李华新,等.3种炸药水下爆炸的声波特性测试及其对比分析[J].北京理工大学学报,2009,29(1):1-4.
Wu Chen,Liao Shasha,Li Huaxin,et al.An investigation and analysis on the acoustic characteristics of three types of explosive charges by underwater explosion[J].Journal of Beijing Institute of Technology,2009,29(1):1-4.
[5]贾虎,沈兆武.金属导爆索的爆炸水声特性[J],爆炸与冲击,2011,31(4):428-432.
Jia Hu,Shen Zhaowu.Underwater sound characteristics of metal-clad detonating cords[J].Explosion and Shock Waves,2011,31(4):428-432.
[6]盛振新.水下连续爆炸声学特性及信号分析研究[D].南京:南京理工大学机械工程学院,2013.
[7]Cole R H.Underwater explosions[M].New York,US:Dover Publications,1965.
[8]顾金海,叶学千.水声学基础[M].北京:国防工业出版社,1981.
[9]Urick R J.水声原理[M].洪申 译.哈尔滨:哈尔滨船舶工程学院出版社,1990.
[10]Rayleigh L.The Theory of sound[M].New York,US:Dover Publications,1945.
[11]Mason W P.Physical acoustics[M].New York,US:Academic Press,1981.
[12]康春玉,章新华,张安清.一种基于谱估计的被动声呐目标识别方法[J].哈尔滨工程大学学报,2003,24(6):627-631.
Kang Chunyu,Zhang Xinhua,Zhang Anqing.A distinguishing method of passive sonar target by means of spectrum estimation[J].Journal of Harbin Engineering University,2003,24(6):627-631.

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Last Update: 2015-04-30