Journal of Applied Mathematics and Computation

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Article http://dx.doi.org/10.26855/jamc.2023.06.010

Transmission Loss Performance Analysis of Acoustic Coatings under Hydrostatic Pressure Considering Cavity Pressure

Shuailong Zhou, Ni Yu*Hongbo Tao, Fenghui Kang

Luoyang Ship Material Research Institute, Luoyang, Henan, China.

*Corresponding author: Ni Yu

Published: July 31,2023

Abstract

Underwater acoustic coatings laid on the hull surface of underwater vehicles is squeezed under the action of high hydrostatic pressure, changing its shape and material parameters, which has a great impact on sound performance. Therefore, studying the sound performance of underwater acoustic coatings under high hydrostatic pressure is great significance for the stealth performance of underwater vehicles. Considering the effect of pressure inside the cavity on the structure deformation and acoustic properties under static pressure, the single-cell deformation of the acoustic coatings containing the cavity is calculated based on axisymmetric finite element simulation. The shape variables are introduced into the two-dimensional theoretical model of the acoustic coatings and the theoretical transmission loss (TL) curve of the coatings is obtained. A comparative analysis of acoustic-solid coupling is carried out using the deformed geometric model to verify the effectiveness of both theoretical analysis and numerical simulation methods for solving TL. The theoretical validity of this paper was verified by experimental comparison. The results show that, without considering the material parameter changes, the acoustic coatings under static pressure undergoes single-cell axial and cavity radial shrinkage, and the sound insulation performance gradually decays, not only that, the cavity pressure resists the shrinkage under static pressure, while attenuating the tendency of curve decay. The results of the study have some reference for forecasting the sound performance of acoustic coatings under static pressure.

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How to cite this paper

Transmission Loss Performance Analysis of Acoustic Coatings under Hydrostatic Pressure Considering Cavity Pressure

How to cite this paper: Shuailong Zhou, Ni Yu, Hongbo Tao, Fenghui Kang. (2023) Transmission Loss Performance Analysis of Acoustic Coatings under Hydrostatic Pressure Considering Cavity Pressure. Journal of Applied Mathematics and Computation7(2), 288-297.

DOI: http://dx.doi.org/10.26855/jamc.2023.06.010