Research on near Field Acoustic Characteristic of a Compound Structure with Plate & Cylindrical Hull Subjected to Sound Excitation

Abstract:

In order to study the acoustic environment of a ship sonar platform, near-field acoustic characteristic of a compound structure with plates & a cylindrical shell (CSPCS) subjected to sound excitation is researched based on numerical simulation. Influence of frequency and sound incident angle on acoustic environment of CSPCS are studied. Study shows that the sound pressure field distribution of CSPCS is complicated. Sound pressure would be strengthened and weakened in different locations when sound pressure uniformly incident into CSPCS. Result shows that the sound pressure distribution is highly dependent on frequency and incident angle. Sound pressure field is more evenly distributed when sound wave frequency is low. Study also shows that the incident angle has considerable influence on the sound field distribution of strengthened and weakened area.

• Periodical: Advanced Materials Research (Volume 716)
• Pages: 559-564
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.716.559
• Online since: July 2013
• Authors: Di Jia, Feng Hui Kang, Yi Na Wang
• Keywords: Compound Structure with Plates, Cylindrical Shell, Incident Angle, Near-Field Acoustic Characteristic, Sonar Platform, Sound Field Distribution, Sound Wave Frequency

References

[1] Pang Fu-Zhen, Yao Xiong-Liang, Jia Di, Yu Dan-Zhu. Experimental investigation of the effects of sound absorption wedges on the underwater acoustic characteristic within a Compound Plate & Cylindrical Shell Structure. Journal of Ship Mechanics.2011,15(5),570~576（in Chinese）

[2] Guo Hua-Lin, Luo Dong-ping, Chen Mei-Xia. Prediction method for low frequency of self-noise in submarine's fore-body sonar platform area[J]．Ship Science and Technology, 2005.8.27(4)：74~77（in Chinese）.

[3] Wang Zu-Hua, Luo Dong-Ping, Xiao Shao-Yu. Prediction of middle and high-frequency self-noise in submarine sonar platform area[J].Ship Science and Technology, 2005.10.27(8):67~70（in Chinese）.

[4] Pang Fu-Zhen, Yao Xiong-Liang, Sun Long-Quan, Kang Feng-Hui. Experiment of underwater acoustic characteristic of sonar platform equipped with sound absorption wedges. Journal of Huazhong University of Science and Technology (Natural Science Edition).2011,39(4),106~109（in Chinese）

[5] Wu Fang-Liang,Shi Zhong-Kun,Yang Xiang-Hui, Submarine sonar self-noise forecast base on BP neural network and L-M Bayesian Regularization algorithm[J].Journal of Ship Mechanics,2007.2.11(1):136~142.（in Chinese）

[6] Jiang Guo-He, Tang Chun-Li, Fang Kai-Xiang. Numerical Calculation of Sound Characteristic of Hull Sonar by FEM/BEM [J].Journal of Jiangsu University of Science and Technology，2003.10.17（5）：6~10.（in Chinese）

[7] Fang Kai-Xiang,Tang Chun-Li,Jiang Guo-He. Simulation of Influence of Fairing and the Acoustical Baffle on the Stern Sonar Performance[J].Noise and Vibration Control，2004.2（1）：17~19. （in Chinese）

[8] Fang Kai-Xiang, Tang Chun-Li ,Jiang Guo-He.Influence of acoustical baffle parameters of spheroidal sonar dome on bow on afterbody sound field[J]. Applied Acoustics，2006.9. vol25（5）：290~294. （in Chinese）