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Acoustic Simulation of Multilayered Noise Control Treatment with Porous Material
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 03, 2018 by SAE International in United States
This content contains downloadable datasetsAnnotation ability available
Porous materials have been applied increasingly for absorbing noise energy and improving the acoustic performance. Different models have been proposed to predict the performance of these materials, and much progress has been achieved. However, most of the foregoing researches have been conducted on a single layer of porous material. In real application, porous materials are usually combined with other kinds of materials to compose a multilayered noise control treatment. This paper investigates the acoustic performance of such treatments with a combination of porous and non-porous media. Results from numerical simulation are compared to experimental measurements. Transfer matrix method is adopted to simulate the insertion loss and absorption associated with three samples of a noise control treatment product, which has two porous layers bonded by an impervious screen. The elastic parameters of the solid phase of a foam or fiber mat are estimated by matching the simulated results to the tested data. It is concluded that appropriately considering the elasticity of the frame in the porous materials is the key to correctly simulate the acoustic performance of multilayer treatments, especially if the global stiffness of the treatment combined with its mass create a local resonance.
CitationYang, W., Dinsmore, M., Castel, A., de Alba Alvarez, R. et al., "Acoustic Simulation of Multilayered Noise Control Treatment with Porous Material," SAE Technical Paper 2018-01-0144, 2018, https://doi.org/10.4271/2018-01-0144.
Data Sets - Support Documents
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- Allard , J.F. and Atalla , N. Propagation of Sound in Porous Media: Modelling Sound Absorbing Materials Chichester John Wiley & Sons 2009
- Arenas , J.P. and Crocker , M.J. Recent Trends in Porous Sound-Absorbing Materials Sound & Vibration 44 12 17 2010
- Attenborough , K. 1982
- Biot , M.A. General Solutions of the Equations of Elasticity and Consolidation for a Porous Material Journal of Applied Mechanics 78 91 96 1958
- Biot , M.A. Theory of Propagation of Elastic Waves in a Fluid-Saturated Porous Solid. I. Low-Frequency Range The Journal of the Acoustical Society of America 28 168 178 1956
- Biot, M.A The Journal of the Acoustical Society of America 1956
- Castagnede , B. , Aknine , A. , Brouard , B. , and Tarnow , V. Effects of Compression on the Sound Absorption of Fibrous Materials Applied Acoustics 61 173 182 2000
- Horoshenkov , K.V. 2015
- Kidner , M.R.F. and Hansen , C.H. A Comparison and Review of Theories of the Acoustics of Porous Materials International Journal of Acoustics and Vibrations 13 3 2008
- Lafarge , D. , Lemarinier , P. , Allard , J.F. , and Tarnow , V. Dynamic Compressibility of Air in Porous Structures at Audible Frequencies The Journal of the Acoustical Society of America 102 4 1995 2006 1997
- Panneton , R.E. Comments on the Limp Frame Equivalent Fluid Model for Porous Media Journal of Acoustical Society of America 122 6 EL217 EL222 2007
- Pritz , T. Dynamic Young’s Modulus and Loss Factor of Plastic Foams for Impact Sound Isolation Journal of Sound and Vibration 178 3 315 322 1994
- Wang , J.C. Young’s Modulus of Porous Materials Journal of Materials Science 19 801 808 1984
- Wang , C.-N. , Kuo , Y.-M. , and Chen , S.-K. Effects of Compression on the Sound Absorption of Porous Materials with an Elastic Frame Applied Acoustics 69 31 39 2008