The Vibro-Acoustic Characteristics Analysis of the Coupled System between Composite Laminated Rotationally Stiffened Plate and Acoustic Cavities
In order to study vibro-acoustic characteristics between composite laminated rotationally stiffened plate and acoustic cavities in the coupled system, first-order shear deformation theory (FSDT) and modified Fourier series are used to construct a unified analysis model. The involved coupled systems...
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MDPI AG
2024-01-01
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| author | Hong Zhang Yiqun Ding Lin He Changgeng Shuai Chao Jiang |
| author_facet | Hong Zhang Yiqun Ding Lin He Changgeng Shuai Chao Jiang |
| author_sort | Hong Zhang |
| collection | DOAJ |
| description | In order to study vibro-acoustic characteristics between composite laminated rotationally stiffened plate and acoustic cavities in the coupled system, first-order shear deformation theory (FSDT) and modified Fourier series are used to construct a unified analysis model. The involved coupled systems primarily encompass three types: the coupled system between composite laminated rotationally stiffened plate and cylindrical-cylindrical cavities, spherical-cylindrical cavities, and conical-cylindrical cavities. First, the first-order shear deformation theory and the modified Fourier series are applied to construct the allowable displacement function of the composite laminated rotationally stiffened plate and the allowable sound pressure function of the acoustic cavities. Second, the energy functionals for the structural domain and the acoustic field domain are established, respectively. According to the continuity condition of the particle vibration velocity at the coupling boundary between the composite, laminated cylindrical shell and the enclosed cavity, the coupling potential energy between the stiffened plate and two acoustic cavities is introduced to obtain the energy functional of the coupled system. Third, the Rayleigh-Ritz method is utilized to solve the energy functional and, when combined with artificial virtual spring technology, the suggested theory may be used to study the vibro-acoustic characteristics of a coupled system with arbitrary elastic boundary conditions. Finally, based on validating the fast convergence and correctness of the model, this paper will analyze the impact of crucial parameters on vibro-acoustic characteristics. Furthermore, by incorporating internal point forces and point-sound source stimulation, a steady-state response analysis of the coupled system will be conducted. This research can give a theoretical foundation for the vibration and noise reduction of a vibro-acoustic coupling system. |
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| language | English |
| last_indexed | 2024-03-08T04:01:59Z |
| publishDate | 2024-01-01 |
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| spelling | doaj.art-bf1a79bfcb2d475f97516f118e9b4ccc2024-02-09T15:07:16ZengMDPI AGApplied Sciences2076-34172024-01-01143100210.3390/app14031002The Vibro-Acoustic Characteristics Analysis of the Coupled System between Composite Laminated Rotationally Stiffened Plate and Acoustic CavitiesHong Zhang0Yiqun Ding1Lin He2Changgeng Shuai3Chao Jiang4Institute of Noise & Vibration, Naval University of Engineering, Wuhan 430033, ChinaCollege of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, ChinaInstitute of Noise & Vibration, Naval University of Engineering, Wuhan 430033, ChinaInstitute of Noise & Vibration, Naval University of Engineering, Wuhan 430033, ChinaInstitute of Noise & Vibration, Naval University of Engineering, Wuhan 430033, ChinaIn order to study vibro-acoustic characteristics between composite laminated rotationally stiffened plate and acoustic cavities in the coupled system, first-order shear deformation theory (FSDT) and modified Fourier series are used to construct a unified analysis model. The involved coupled systems primarily encompass three types: the coupled system between composite laminated rotationally stiffened plate and cylindrical-cylindrical cavities, spherical-cylindrical cavities, and conical-cylindrical cavities. First, the first-order shear deformation theory and the modified Fourier series are applied to construct the allowable displacement function of the composite laminated rotationally stiffened plate and the allowable sound pressure function of the acoustic cavities. Second, the energy functionals for the structural domain and the acoustic field domain are established, respectively. According to the continuity condition of the particle vibration velocity at the coupling boundary between the composite, laminated cylindrical shell and the enclosed cavity, the coupling potential energy between the stiffened plate and two acoustic cavities is introduced to obtain the energy functional of the coupled system. Third, the Rayleigh-Ritz method is utilized to solve the energy functional and, when combined with artificial virtual spring technology, the suggested theory may be used to study the vibro-acoustic characteristics of a coupled system with arbitrary elastic boundary conditions. Finally, based on validating the fast convergence and correctness of the model, this paper will analyze the impact of crucial parameters on vibro-acoustic characteristics. Furthermore, by incorporating internal point forces and point-sound source stimulation, a steady-state response analysis of the coupled system will be conducted. This research can give a theoretical foundation for the vibration and noise reduction of a vibro-acoustic coupling system.https://www.mdpi.com/2076-3417/14/3/1002vibro-acoustic characteristicsunified analysis modelcomposite stiffened plate-cavity coupling systemmodified Fourier series |
| spellingShingle | Hong Zhang Yiqun Ding Lin He Changgeng Shuai Chao Jiang The Vibro-Acoustic Characteristics Analysis of the Coupled System between Composite Laminated Rotationally Stiffened Plate and Acoustic Cavities Applied Sciences vibro-acoustic characteristics unified analysis model composite stiffened plate-cavity coupling system modified Fourier series |
| title | The Vibro-Acoustic Characteristics Analysis of the Coupled System between Composite Laminated Rotationally Stiffened Plate and Acoustic Cavities |
| title_full | The Vibro-Acoustic Characteristics Analysis of the Coupled System between Composite Laminated Rotationally Stiffened Plate and Acoustic Cavities |
| title_fullStr | The Vibro-Acoustic Characteristics Analysis of the Coupled System between Composite Laminated Rotationally Stiffened Plate and Acoustic Cavities |
| title_full_unstemmed | The Vibro-Acoustic Characteristics Analysis of the Coupled System between Composite Laminated Rotationally Stiffened Plate and Acoustic Cavities |
| title_short | The Vibro-Acoustic Characteristics Analysis of the Coupled System between Composite Laminated Rotationally Stiffened Plate and Acoustic Cavities |
| title_sort | vibro acoustic characteristics analysis of the coupled system between composite laminated rotationally stiffened plate and acoustic cavities |
| topic | vibro-acoustic characteristics unified analysis model composite stiffened plate-cavity coupling system modified Fourier series |
| url | https://www.mdpi.com/2076-3417/14/3/1002 |
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