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Effects of spring
oscillators on the vibroacoustic properties of porous
sandwich plates under elastic constraints
Yu-Xing Zou, Feng-Lian Li and Yin Zhu |
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Vol. 19 (2024), No. 5, 801–817
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Abstract |
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The vibroacoustic characteristics of porous sandwich plates with spring oscillators is investigated. Based on the first-order shear deformation theory and Hamilton’s principle, a dynamic theoretical model of a porous sandwich plate with local oscillators is established. By using the Rayleigh–Ritz method, incorporating the double Fourier cosine series and auxiliary polynomial functions and fluid-solid interface conditions, the natural frequencies under different boundary conditions and the sound insulation under the vertically incident sound waves are obtained and compared with the finite element simulation. Then, the impacts of parameter changes, such as porosity coefficient, oscillator mass, oscillator numbers, etc., on the free vibration and sound insulation performances of the structure with local resonators are discussed. |
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Keywords
porous sandwich plate, local resonators, elastic
constraints, vibroacoustic performance
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Milestones
Received: 15 July 2024
Revised: 22 August 2024
Accepted: 1 September 2024
Published: 30 October 2024
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Authors |
| Yu-Xing Zou | |
| School of Mechanical and Electrical
Engineering Beijing Information Science and Technology University China |
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| Feng-Lian Li | |
| School of Mechanical and Electrical
Engineering Beijing Information Science and Technology University China |
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| Yin Zhu | |
| School of Mechanical and Electrical
Engineering Beijing Information Science and Technology University China |
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| © 2024 MSP (Mathematical Sciences Publishers). |
