A sound–structure interaction model is established to study the vibroacoustic characteristics of a semisubmerged cylindrical shell using the wave propagation approach (WPA). The fluid free surface effect is taken into account by satisfying the sound pressure release condition. Then, the far-field sound pressure is predicted with shell's vibration response using the stationary phase method. Modal coupling effect arises due to the presence of the fluid free surface. New approaches are proposed to handle this problem, i.e., diagonal coupling acoustic radiation model (DCARM) and column coupling acoustic radiation model (CCARM). New approaches are proved to be able to deal with the modal coupling problem efficiently with a good accuracy at a significantly reduced computational cost. Numerical results also indicate that the sound radiation characteristics of a semisubmerged cylindrical shell are quite different from those from the shell fully submerged in fluid. But the far-field sound pressure of a semisubmerged shell fluctuates around that from the shell ideally submerged in fluid. These new approaches can also be used to study the vibroacoustic problems of cylindrical shells partially coupled with fluid.
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August 2017
Research-Article
Prediction of Far-Field Sound Pressure of a Semisubmerged Cylindrical Shell With Low-Frequency Excitation
T. Y. Li,
T. Y. Li
School of Naval Architecture
and Ocean Engineering,
Huazhong University of Science and Technology,
Wuhan 430074, China
e-mail: ltyz801@hust.edu.cn
and Ocean Engineering,
Huazhong University of Science and Technology,
Wuhan 430074, China
e-mail: ltyz801@hust.edu.cn
Search for other works by this author on:
P. Wang,
P. Wang
School of Naval Architecture and
Ocean Engineering,
Huazhong University of Science and Technology,
Wuhan 430074, China
e-mail: paulwang@hust.edu.cn
Ocean Engineering,
Huazhong University of Science and Technology,
Wuhan 430074, China
e-mail: paulwang@hust.edu.cn
Search for other works by this author on:
X. Zhu,
X. Zhu
School of Naval Architecture and
Ocean Engineering,
Huazhong University of Science
and Technology,
Wuhan 430074, China
e-mail: zhuxiang@hust.edu.cn
Ocean Engineering,
Huazhong University of Science
and Technology,
Wuhan 430074, China
e-mail: zhuxiang@hust.edu.cn
Search for other works by this author on:
J. Yang,
J. Yang
Department of Mechanical, Materials
and Manufacturing Engineering,
University of Nottingham Ningbo China,
Ningbo 315100, China
e-mail: jian.yang@nottingham.edu.cn
and Manufacturing Engineering,
University of Nottingham Ningbo China,
Ningbo 315100, China
e-mail: jian.yang@nottingham.edu.cn
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W. B. Ye
W. B. Ye
No. 1 Department,
Wuhan Second Ship Design and
Research Institute,
Wuhan 430074, China
e-mail: 1025500148@qq.com
Wuhan Second Ship Design and
Research Institute,
Wuhan 430074, China
e-mail: 1025500148@qq.com
Search for other works by this author on:
T. Y. Li
School of Naval Architecture
and Ocean Engineering,
Huazhong University of Science and Technology,
Wuhan 430074, China
e-mail: ltyz801@hust.edu.cn
and Ocean Engineering,
Huazhong University of Science and Technology,
Wuhan 430074, China
e-mail: ltyz801@hust.edu.cn
P. Wang
School of Naval Architecture and
Ocean Engineering,
Huazhong University of Science and Technology,
Wuhan 430074, China
e-mail: paulwang@hust.edu.cn
Ocean Engineering,
Huazhong University of Science and Technology,
Wuhan 430074, China
e-mail: paulwang@hust.edu.cn
X. Zhu
School of Naval Architecture and
Ocean Engineering,
Huazhong University of Science
and Technology,
Wuhan 430074, China
e-mail: zhuxiang@hust.edu.cn
Ocean Engineering,
Huazhong University of Science
and Technology,
Wuhan 430074, China
e-mail: zhuxiang@hust.edu.cn
J. Yang
Department of Mechanical, Materials
and Manufacturing Engineering,
University of Nottingham Ningbo China,
Ningbo 315100, China
e-mail: jian.yang@nottingham.edu.cn
and Manufacturing Engineering,
University of Nottingham Ningbo China,
Ningbo 315100, China
e-mail: jian.yang@nottingham.edu.cn
W. B. Ye
No. 1 Department,
Wuhan Second Ship Design and
Research Institute,
Wuhan 430074, China
e-mail: 1025500148@qq.com
Wuhan Second Ship Design and
Research Institute,
Wuhan 430074, China
e-mail: 1025500148@qq.com
1Corresponding author.
Contributed by the Noise Control and Acoustics Division of ASME for publication in the JOURNAL OF VIBRATION AND ACOUSTICS. Manuscript received January 31, 2016; final manuscript received February 13, 2017; published online May 30, 2017. Assoc. Editor: Marco Amabili.
J. Vib. Acoust. Aug 2017, 139(4): 041002 (9 pages)
Published Online: May 30, 2017
Article history
Received:
January 31, 2016
Revised:
February 13, 2017
Citation
Li, T. Y., Wang, P., Zhu, X., Yang, J., and Ye, W. B. (May 30, 2017). "Prediction of Far-Field Sound Pressure of a Semisubmerged Cylindrical Shell With Low-Frequency Excitation." ASME. J. Vib. Acoust. August 2017; 139(4): 041002. https://doi.org/10.1115/1.4036209
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