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 Danzhu Yu,Xiongliang Yao and Shaoshi Dai.Experimental and Numerical Procedures of a Sonar Platform with a Sound Absorption Wedge[J].Journal of Marine Science and Application,2011,(3):364-370.[doi:10.1007/s11804-011-1081-2]
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Experimental and Numerical Procedures of a Sonar Platform with a Sound Absorption Wedge


Experimental and Numerical Procedures of a Sonar Platform with a Sound Absorption Wedge
Danzhu Yu Xiongliang Yao and Shaoshi Dai
Danzhu Yu Xiongliang Yao and Shaoshi Dai
1. Department of Naval Architecture, Dalian University of Technology, Dalian 116024, China 2. College of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, China
sound absorption wedge sonar platform area costal experiment of model self-noise numerical calculation
Experiments involving a sonar platform with a sound absorption wedge were carried out for the purpose of obtaining the low frequency acoustic characteristics. Acoustic characteristics of a sonar platform model with a sound absorption wedge were measured, and the effects of different wedge laid areas on platform acoustic characteristic were tested. Vibration acceleration and self-noise caused by model vibration were measured in four conditions: 0%, 36%, 60%, and 100% of wedge laid area when the sonar platform was under a single frequency excitation force. An experiment was performed to validate a corresponding numerical calculation. The numerical vibration characteristics of platform area were calculated by the finite element method, and self-noise caused by the vibration in it was predicted by an experiential formula. The conclusions prove that the numerical calculation method can partially replace the experimental process for obtaining vibration and sound characteristics.


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Supported by Harbin Talents of Science and Technology Innovation Special Fund (2011RFQXG021)
Last Update: 2011-09-15