Efficient modeling of flat and homogeneous acoustic treatments for vibroacoustic finite element analysis. Finite size correction by image sources

Alimonti, Luca; Atalla, Noureddine

doi:10.1016/j.jsv.2016.10.028

Cited by 9 publications

(2 citation statements)

References 26 publications

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“…An alternative approach to include boundary condition effects in the TMM is to replace the force loading on the finite layer by the equivalent antisymmetric loading on the infinite layer using the method of images [35][36][37][38][39]. It has been shown that a summation of the direct and reflected fields, where the reflected field is obtained by a summation over a limited number of image sources, in combination with the TMM yields accurate results for mechanically excited panels of finite size with sufficient damping [40].…”

Section: Introductionmentioning

confidence: 99%

Transfer Matrix approaches for the prediction of impact sound radiation from layered floors

Vastiau

hoorickx

Reynders

2024

Journal of Sound and Vibration

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Section: Introductionmentioning

confidence: 99%

Transfer Matrix approaches for the prediction of impact sound radiation from layered floors

Vastiau

hoorickx

Reynders

2024

Journal of Sound and Vibration

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“…e typical acoustic coating structure used in underwater equipment is homogeneous acoustic coating [1,2], Alberich acoustic coating [3,4], and trumpet cavity-type coating [5]. Homogeneous acoustic coating has the characteristics of simple structure, convenient installation and maintenance, and low cost, but its low-frequency sound absorption performance is poor.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Sound Absorption Performance of Underwater Acoustic Coating considering Different Poisson’s Ratio Values

Luo

Yan³

et al. 2021

Shock and Vibration

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Viscoelastic material acoustic coating plays an important role in noise and vibration control of underwater equipment. The dynamic mechanical properties of the viscoelastic material have a direct effect on the sound absorption performance of the acoustic coating. The influence of Poisson’s ratio on sound absorption performance is studied. A finite element model was established to calculate the sound absorption performance of three typical acoustic coatings: homogeneous acoustic coatings, Alberich acoustic coatings, and trumpet cavity acoustic coatings, and the influence of Poisson’s ratio on the sound absorption performance of the three kinds of acoustic coatings was analyzed. The results show that when Poisson’s ratio varies from 0.49 to 0.4999, the larger Poisson’s ratio is, the larger the frequency of the first absorption peak is, the smaller the absorption coefficient below the frequency of the first absorption peak is, and the smaller the average absorption coefficient in the whole analysis frequency range is. The dynamic Poisson’s ratio with the change of frequency is obtained by interpolating the test results and static Poisson’s ratio finite element calculation results. The calculation results show that the dynamic Poisson’s ratio can get more accurate calculation results. This work can provide a reference for researchers to set Poisson’s ratio in theoretical analysis and finite element analysis of acoustic coating.

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A hybrid patch transfer-Green functions method to solve transmission loss problems of flat single and double walls with attached sound packages

Kesour

Atalla

2018

Journal of Sound and Vibration

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Efficient modeling of flat and homogeneous acoustic treatments for vibroacoustic finite element analysis. Finite size correction by image sources

Cited by 9 publications

References 26 publications

Transfer Matrix approaches for the prediction of impact sound radiation from layered floors

Transfer Matrix approaches for the prediction of impact sound radiation from layered floors

Analysis of Sound Absorption Performance of Underwater Acoustic Coating considering Different Poisson’s Ratio Values

A hybrid patch transfer-Green functions method to solve transmission loss problems of flat single and double walls with attached sound packages

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