Characteristics and calculation method of sound radiation of cylindrical shell with porous sound-absorbing material under acoustic excitation
ObjectiveThis paper aims to study the characteristics and calculation method of the vibration and sound radiation of single ring-stiffened cylindrical shells with porous fiber composite materials installed in the inner wall under acoustic excitation. MethodBased on the equivalent fluid theory model...
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| Format: | Article |
| Language: | English |
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Editorial Office of Chinese Journal of Ship Research
2023-04-01
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| Series: | Zhongguo Jianchuan Yanjiu |
| Subjects: | |
| Online Access: | http://www.ship-research.com/en/article/doi/10.19693/j.issn.1673-3185.02518 |
| _version_ | 1797829011791937536 |
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| author | Xinmei YANG Meixia CHEN Yinglong ZHAO Wenkai DONG |
| author_facet | Xinmei YANG Meixia CHEN Yinglong ZHAO Wenkai DONG |
| author_sort | Xinmei YANG |
| collection | DOAJ |
| description | ObjectiveThis paper aims to study the characteristics and calculation method of the vibration and sound radiation of single ring-stiffened cylindrical shells with porous fiber composite materials installed in the inner wall under acoustic excitation. MethodBased on the equivalent fluid theory model of Johnson–Champoux–Allard (JCA) and the transfer matrix of the multilayer medium, a theoretical formula of the sound absorption coefficient of multilayer sound absorption structures is derived. The three methods for calculating the vibration and sound radiation of a single ring-stiffened cylindrical shell with porous fiber materials under acoustic excitation, namely acoustic solid modeling of porous media, finite element model combined with theoretical formula and imposition of impedance boundary on sound absorption coefficient, are then verified and compared. Finally, the influences of sound-absorbing material's thickness, backed-air gap, static flow resistance, and material arrangement order on the acoustic absorption performance of the cylindrical shell are investigated. ResultsThe results show that laying porous fiber composite materials on the cylindrical shell internally can reduce the vibration and acoustic radiation of cylindrical shell structure. The sound absorption coefficient curve can quickly and effectively predict the resulting trend of the vibration and sound radiation of the cylindrical shell. ConclusionThe acoustic absorption performance of sound absorption structures can be effectively improved through the rational design of their properties and arrangement order of the sound-absorbing materials in order to achieve the purpose of vibration and noise reduction. |
| first_indexed | 2024-04-09T13:13:33Z |
| format | Article |
| id | doaj.art-839c9da267c2413d9fae9b74be9bd8b4 |
| institution | Directory Open Access Journal |
| issn | 1673-3185 |
| language | English |
| last_indexed | 2024-04-09T13:13:33Z |
| publishDate | 2023-04-01 |
| publisher | Editorial Office of Chinese Journal of Ship Research |
| record_format | Article |
| series | Zhongguo Jianchuan Yanjiu |
| spelling | doaj.art-839c9da267c2413d9fae9b74be9bd8b42023-05-12T05:33:49ZengEditorial Office of Chinese Journal of Ship ResearchZhongguo Jianchuan Yanjiu1673-31852023-04-011829710610.19693/j.issn.1673-3185.02518ZG2518Characteristics and calculation method of sound radiation of cylindrical shell with porous sound-absorbing material under acoustic excitationXinmei YANG0Meixia CHEN1Yinglong ZHAO2Wenkai DONG3School of Naval Architecture and Ocean Engineering, Huazhong University of Science and Technology, Wuhan 430074, ChinaSchool of Naval Architecture and Ocean Engineering, Huazhong University of Science and Technology, Wuhan 430074, ChinaInstitute of Noise and Vibration, Naval University of Engineering, Wuhan 430033, ChinaSchool of Naval Architecture and Ocean Engineering, Huazhong University of Science and Technology, Wuhan 430074, ChinaObjectiveThis paper aims to study the characteristics and calculation method of the vibration and sound radiation of single ring-stiffened cylindrical shells with porous fiber composite materials installed in the inner wall under acoustic excitation. MethodBased on the equivalent fluid theory model of Johnson–Champoux–Allard (JCA) and the transfer matrix of the multilayer medium, a theoretical formula of the sound absorption coefficient of multilayer sound absorption structures is derived. The three methods for calculating the vibration and sound radiation of a single ring-stiffened cylindrical shell with porous fiber materials under acoustic excitation, namely acoustic solid modeling of porous media, finite element model combined with theoretical formula and imposition of impedance boundary on sound absorption coefficient, are then verified and compared. Finally, the influences of sound-absorbing material's thickness, backed-air gap, static flow resistance, and material arrangement order on the acoustic absorption performance of the cylindrical shell are investigated. ResultsThe results show that laying porous fiber composite materials on the cylindrical shell internally can reduce the vibration and acoustic radiation of cylindrical shell structure. The sound absorption coefficient curve can quickly and effectively predict the resulting trend of the vibration and sound radiation of the cylindrical shell. ConclusionThe acoustic absorption performance of sound absorption structures can be effectively improved through the rational design of their properties and arrangement order of the sound-absorbing materials in order to achieve the purpose of vibration and noise reduction.http://www.ship-research.com/en/article/doi/10.19693/j.issn.1673-3185.02518porous sound-absorbing materialmultilayer sound absorption structuresound absorption coefficientradiated noise |
| spellingShingle | Xinmei YANG Meixia CHEN Yinglong ZHAO Wenkai DONG Characteristics and calculation method of sound radiation of cylindrical shell with porous sound-absorbing material under acoustic excitation Zhongguo Jianchuan Yanjiu porous sound-absorbing material multilayer sound absorption structure sound absorption coefficient radiated noise |
| title | Characteristics and calculation method of sound radiation of cylindrical shell with porous sound-absorbing material under acoustic excitation |
| title_full | Characteristics and calculation method of sound radiation of cylindrical shell with porous sound-absorbing material under acoustic excitation |
| title_fullStr | Characteristics and calculation method of sound radiation of cylindrical shell with porous sound-absorbing material under acoustic excitation |
| title_full_unstemmed | Characteristics and calculation method of sound radiation of cylindrical shell with porous sound-absorbing material under acoustic excitation |
| title_short | Characteristics and calculation method of sound radiation of cylindrical shell with porous sound-absorbing material under acoustic excitation |
| title_sort | characteristics and calculation method of sound radiation of cylindrical shell with porous sound absorbing material under acoustic excitation |
| topic | porous sound-absorbing material multilayer sound absorption structure sound absorption coefficient radiated noise |
| url | http://www.ship-research.com/en/article/doi/10.19693/j.issn.1673-3185.02518 |
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