Sound insulation provided by single and double panel walls—a comparison of analytical solutions versus experimental results

Tadeu, A.; António, Julieta; Mateus, Diogo

doi:10.1016/j.apacoust.2003.07.003

Cited by 57 publications

(34 citation statements)

References 23 publications

(32 reference statements)

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“…Control of sound transmission through a double-wall structure with an acoustic enclosure is an interesting topic of research that has received much attention for years [1][2][3][4][5][6]. Generally, for the double-wall structure with a shallow gap, the strong coupling of the mass-air-mass will deteriorate sound behavior at low frequencies, which leads to the rapid development of using active techniques for noise control [7][8][9][10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Noise control of an acoustic enclosure covered by a double-wall structure with shallow gap: Design of resonator-like cavities

2010

Applied Acoustics

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Section: Introductionmentioning

confidence: 99%

Noise control of an acoustic enclosure covered by a double-wall structure with shallow gap: Design of resonator-like cavities

2010

Applied Acoustics

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“…The experimental results in [38] are depicted averaged in 1/10 octave bands. For the comparison, their sound energies have been averaged in order to provide the sound reduction index law in one-third octave bands…”

Section: Comparison With Experimental Datamentioning

confidence: 99%

“…In [38], Tadeu et al show the sound reduction index measured in the lab for a double glazing. In Table 1 the properties of the glass leaves are shown.…”

Section: Comparison With Experimental Datamentioning

confidence: 99%

The finite layer method for modelling the sound transmission through double walls

Díaz-Cereceda

Poblet-Puig

Ferran

2012

Journal of Sound and Vibration

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The finite layer method (FLM) is presented as a discretisation technique for the computation of noise transmission through double walls. It combines a finite element method (FEM) discretisation in the direction perpendicular to the wall with trigonometric functions in the two in-plane directions. It is used for solving the Helmholtz equation at the cavity inside the double wall, while the wall leaves are modelled with the thin plate equation and solved with modal analysis. Other approaches to this problem are described here (and adapted where needed) in order to compare them with the FLM. They range from impedance models of the double wall behaviour to different numerical methods for solving the Helmholtz equation in the cavity. For the examples simulated in this work (impact noise and airborne sound transmission), the former are less accurate than the latter at low frequencies. The main advantage of FLM over the other discretisation techniques is the possibility of extending it to multilayered structures without changing the interpolation functions and with an affordable computational cost. This potential is illustrated with a calculation of the noise transmission through a multilayered structure: a double wall partially filled with absorbing material.

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“…In addition, they have demonstrated that the laminated panels used in automotive comportments such as roof panel and front dash can reduce the noise from road and driveline. Tadeu et al investigated the sound insulation features provided by single and double panels of steel, concrete and glass (Tadeu et al, 2004). Onsay proposed a SEA model to examine the corresponding issues such as improving the sound and vibration quality as well as decreasing the manufacturing costs (Onsay, 2007).…”

Section: Introductionmentioning

confidence: 99%

A study on acoustic behavior of poroelastic media bonded between laminated composite panels

Shojaeefard

Talebitooti

Ahmadi

et al. 2014

Lat. Am. j. solids struct.

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A study on the acoustic behavior of double-walled panels, with sandwiched layer of porous materials is presented within Classical Laminated Plate Theory (CLPT) for laminated composite panels. For this purpose, equations of wave propagation are firstly extracted based on Biot's theory for porous materials, then the transmission loss (TL) of the structure is estimated in a broadband frequency. Secondly, TL coefficient of the structure is determined using Statistical Energy Analysis (SEA). In the next step, accuracy of the solution is shown with comparing the data obtained from these two presented models as well as the experimental results available in literature. Finally, the effects of parameters on sound transmission loss of double porous composite panels, especially at a high frequency range, are discussed. In addition, the results show that maximum sound energy is transferred through the waves frame (structure born) due to the porous layer bonded between the two composite panels. Therefore, material parameters that are principally related to solid phase of the foam such as Poisson's ratio, bulk density and bulk Young's modulus, have the most significant effects on the transmission loss. Meanwhile, the impacts of composite material panels and composite plies arrangement on sound transmission loss structures have been addressed in this paper. Keywords

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Sound insulation provided by single and double panel walls—a comparison of analytical solutions versus experimental results

Cited by 57 publications

References 23 publications

Noise control of an acoustic enclosure covered by a double-wall structure with shallow gap: Design of resonator-like cavities

Noise control of an acoustic enclosure covered by a double-wall structure with shallow gap: Design of resonator-like cavities

The finite layer method for modelling the sound transmission through double walls

A study on acoustic behavior of poroelastic media bonded between laminated composite panels

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