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Calculation method of coupling loss factor of underwater ribbed plate-acoustic cavity system
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Bin LU1, Mei-ping SHENG1, 2, Zhi-wei GUO1, 2, Yi-peng CHENG2, Chang-jiang YANG1, 2
Journal of Ship Mechanics | 2025, 29(7) : 1159 - 1166
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Journal of Ship Mechanics | 2025, 29(7): 1159-1166
• Hydro/Structural Acoustics •
Calculation method of coupling loss factor of underwater ribbed plate-acoustic cavity system
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Bin LU1, Mei-ping SHENG1, 2, Zhi-wei GUO1, 2, Yi-peng CHENG2, Chang-jiang YANG1, 2
Affiliations
  • 1.Ningbo Research Institute of Northwestern Polytechnical University, Ningbo 315048, China
  • 2.School of Marine Science and Technology, Northwestern Polytechnical University, Xi’an 710068, China
Published: 2025-07-20 doi: 10.3969/j.issn.1007-7294.2025.07.014
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Ribbed plate structures are widely used in ship structural design due to their high structural stiffness and strength. In this paper, based on the frequency band analysis model of ribbed plates and the statistical energy analysis (SEA) parameter calculation method of the acoustic cavity subsystem, a calculation model of the radiation efficiency between the ribbed plate structure and the acoustic cavity was established, and the influence of fluid load was taken into account, thus the method for calculating the coupling loss factor of an underwater ribbed plate with an acoustic cavity was obtained. Further, the calculation method was verified by using SEA commercial software. The effects of fluid load and structural reinforcement on the coupling characteristics were studied and analyzed. The results show that the fluid load and structural reinforcement mainly affect the radiation efficiency and coupling loss factor in the frequency band below the cut-off frequency of the coupling structure, and have little effect on that in the frequency band above the cut-off frequency. The research results of this paper can provide theoretical support for the prediction of ship cabin noise and acoustic design.

ribbed plate  /  plate-cavity coupling system  /  statistical energy analysis  /  coupling loss factor  /  radiation efficiency
Bin LU, Mei-ping SHENG, Zhi-wei GUO, Yi-peng CHENG, Chang-jiang YANG. Calculation method of coupling loss factor of underwater ribbed plate-acoustic cavity system[J]. Journal of Ship Mechanics, 2025 , 29 (7) : 1159 -1166 . DOI: 10.3969/j.issn.1007-7294.2025.07.014
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Article Info
doi: 10.3969/j.issn.1007-7294.2025.07.014
  • Receive Date：2025-01-19
  • Online Date：2026-03-24
  • Published：2025-07-20
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  • Received：2025-01-19
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    1.Ningbo Research Institute of Northwestern Polytechnical University, Ningbo 315048, China
    2.School of Marine Science and Technology, Northwestern Polytechnical University, Xi’an 710068, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
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Number of
species		 占总种数比例
Percentage of
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Genus		 种数
Number of
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Percentage of total
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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