2015
DOI: 10.1121/1.4907163
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A hybrid finite element–transfer matrix model for vibroacoustic systems with flat and homogeneous acoustic treatments

Abstract: Practical vibroacoustic systems involve passive acoustic treatments consisting of highly dissipative media such as poroelastic materials. The numerical modeling of such systems at low to mid frequencies typically relies on substructuring methodologies based on finite element models. Namely, the master subsystems (i.e., structural and acoustic domains) are described by a finite set of uncoupled modes, whereas condensation procedures are typically preferred for the acoustic treatments. However, although accurate… Show more

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Cited by 13 publications
(10 citation statements)
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“…Their model enabled the computation of the mean and variance of diffused field STL and also avoided the detailed finite element modelling of the structure. Other hybrid models which have been investigated are the finite element transfer matrix method (FE-TMM) [122,123] and the patch transfer models [124,125].…”
Section: Hybridization Modelsmentioning
confidence: 99%
“…Their model enabled the computation of the mean and variance of diffused field STL and also avoided the detailed finite element modelling of the structure. Other hybrid models which have been investigated are the finite element transfer matrix method (FE-TMM) [122,123] and the patch transfer models [124,125].…”
Section: Hybridization Modelsmentioning
confidence: 99%
“…The effect of flow on these structures was subsequently studied by Liu [20]. The numerical methods [14] for these structures, based on the Biot theory, were also developed.…”
Section: Introductionmentioning
confidence: 99%
“…In these absorption filling (cavity) problems, the EFM, owing to its simplicity, is widely used together with numerical [11] or semi-analytical methods [8,12,13]. For elastic frame porous problems, the Biot theory should be used [14,15] as the EFM is invalid. Using the Biot theory, together with the simplifications of Deresiewicz [16] and Allard [17], Bolton [18] studied a two-dimensional (2D) multipanel structure with elastic porous materials, where the closed form expressions for 2D poroelastic field are obtained.…”
mentioning
confidence: 99%
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“…The method depends more on engineering personnel experience when the predicted ship differs greatly from the parent ship and engineering accuracy requirements will not be met in case of inaccurate parameter selection. Theoretical analysis method directly establishes coupling dynamic equations on structure and air to obtain acoustic radiation values of the structure through modal expansion and integral transformation [9][10][11]. The method has high solving efficiency and good calculation accuracy, but only applicable to geometric structures with simple analytical solutions and thus less applied in ship noise prediction.…”
Section: Introductionmentioning
confidence: 99%