The transmission of sound through a cavity-backed finite plate

Guy, R. W.; Bhattacharya, Madhuchhanda

doi:10.1016/0022-460x(73)90062-x

Cited by 99 publications

(31 citation statements)

References 6 publications

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“…1 The sketch of the two-dimensional structural-acoustic coupling system with one flexible beam subject to simply-supported boundary condition Fig. 2 Cubic acoustic-cavity with one elastic plate of threedimensional coupled system the acoustic cavity, which includes the mass source term and the effect of structural motion [18,25], is represented as:…”

Section: Acoustic Problemmentioning

confidence: 99%

“…To get rid of the limitations on numerical simulations such as mesh generations and singular integrals, the MFS can be seen as an easier method to treat the coupled system. The coupled system is modeled as the acoustic fields with an interface of elastic structures [18]. Practical examples include the noise problems of automobile mufflers, hermetic compressors [19] and passenger compartments of automobiles and aircraft in mechanics, especially the earmuff-earcanal system [20] and the aerospace structures.…”

Section: Introductionmentioning

confidence: 99%

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Frequency response analyses in vibroacoustics using the method of fundamental solutions

Young

Fan

2010

Comput Mech

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The method of fundamental solutions, one of the promising boundary-type meshless methods, is proposed as a direct procedure to formulate and analyze the vibroacoustic problem. The coupled system discussed in this study is composed of an acoustic-cavity and excited by an external force or an internal sound source harmonically. The wall of cavity consists of the beam or the plate components, respectively, in two-and three-dimensional problems. The two independent sub-systems interact at the interface simultaneously by satisfying the necessary equilibrium and compatibility conditions. The mathematical formulations described by the presented meshless method demonstrate straightforwardly the frequency responses of the vibroacoustic problems with no boundary integrals. General characteristics of the dynamic coupling effect are displayed, based on the systematic natural frequencies and mode shapes. Feasible results simulated by the presented numerical scheme are validated through meshless numerical experiments including the acoustic-wave propagation problems and the vibroacoustic problems.

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Section: Acoustic Problemmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Frequency response analyses in vibroacoustics using the method of fundamental solutions

Young

Fan

2010

Comput Mech

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“…In the past, many researchers such as Narayanan [1], Lee [2][3][4][5][6][7], Lyon [8], Pretlove [9], Jackson [10], Guy [11], Dowell [12] and Oldham [13,14] developed their models to predict the insertion loss performance or transmission loss performance of a cavity-backed rectangular enclosure panel. Their predictions have clearly indicated that the (1,1) mode structural resonance is much more important than others on the noise reduction performance Although the rectangular enclosure models [1][2][3][4][5][6][7][8][9][10][11][12][13][14] and the present enclosure model are simplified and different from a practical close-fitting enclosure which has more than one panel and boundary conditions are more complicated, the theoretical predictions provide a close look at the importance of the acoustical and structural resonance.…”

Section: Introductionmentioning

confidence: 99%

Insertion Loss of a Cavity-Backed Semi-Cylindrical Enclosure Panel

Lee¹

2003

Journal of Sound and Vibration

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“…Dowell and Voss investigated the modal response of a cavity-backed plate [2]. Since then, there have been continuous efforts to improve the understanding of sound transmission through panels into cavities [1][2][3][4][5][6][7][8][9][10][11][12][13]. The previous research were based on a regular model (a rectangular enclosure with a flexible boundary).…”

Section: Introductionmentioning

confidence: 99%

The analysis of structural-acoustic coupling of an enclosure using Green’s function method

Luo

Zhao

Rao

2005

Int J Adv Manuf Technol

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Currently researchers expect to control the internal noise of an enclosure by controlling the relative structural vibration. The method is called ANC (Active Noise Control). Sound pressure response and velocity response of the structure are two significant factors to evaluate the performance of the ANC. But previous researches have to depend on a three-dimensional model with regular shape. Based on the Green's function theorem this paper proposed two formulas to describe the contributions of acoustic modes and structural modes. These two formulas are the essential basis for the analysis of structural-acoustic coupling of an enclosure. From them compact matrix formulas are deduced and a numerical simulation method is presented to calculate the responses of sound pressure and velocity. The numerical simulation method is verified by comparing the numerical result with the theoretical one based on a regular model. And the application of the method in an irregular model shows this method can be used to analyze any model with arbitrary shape.

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The transmission of sound through a cavity-backed finite plate

Cited by 99 publications

References 6 publications

Frequency response analyses in vibroacoustics using the method of fundamental solutions

Frequency response analyses in vibroacoustics using the method of fundamental solutions

Insertion Loss of a Cavity-Backed Semi-Cylindrical Enclosure Panel

The analysis of structural-acoustic coupling of an enclosure using Green’s function method

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