Mechanical Parameters Effects on Acoustic Absorption at Polymer Foam
Polymer foams have acoustic absorption properties that play an important role in reducing noise level. When the skeleton is set to motion, it is necessary to use generalized Biot-Allard model which takes into account the deformation of the skeleton and the fluid and the interactions between them. Th...
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| Format: | Article |
| Language: | English |
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Wiley
2015-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2015/896035 |
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| _version_ | 1832558919410515968 |
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| author | Lyes Dib Samia Bouhedja Hamza Amrani |
| author_facet | Lyes Dib Samia Bouhedja Hamza Amrani |
| author_sort | Lyes Dib |
| collection | DOAJ |
| description | Polymer foams have acoustic absorption properties that play an important role in reducing noise level. When the skeleton is set to motion, it is necessary to use generalized Biot-Allard model which takes into account the deformation of the skeleton and the fluid and the interactions between them. The aim of this work is to study the quality of acoustic absorption in polyurethane foam and to show the importance of the structural vibration of this foam on the absorption by varying mechanical parameters (Young’s modulus E, Poisson’s coefficient ν, structural damping factor η, and the density ρ1). We calculated the absorption coefficient analytically using classical Biot formulation (us, uf) and numerically using Biot mixed formulation (us, p) in 3D COMSOL Multiphysics. The obtained results are compared together and show an excellent agreement. Afterwards, we studied the effect of varying each mechanical parameter independently on the absorption in interval of ±20%. The simulations show that these parameters have an influence on the sound absorption around the resonance frequency fr. |
| format | Article |
| id | doaj-art-3042c7ad9bc24f4bbdc96b329b1d901c |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2015-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-3042c7ad9bc24f4bbdc96b329b1d901c2025-02-03T01:31:10ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422015-01-01201510.1155/2015/896035896035Mechanical Parameters Effects on Acoustic Absorption at Polymer FoamLyes Dib0Samia Bouhedja1Hamza Amrani2Hyperfrequencies and Semiconductor Laboratory, Faculty of Sciences of Technology, Mentouri Brothers University of Constantine, P.B. 325, 25017 Constantine, AlgeriaHyperfrequencies and Semiconductor Laboratory, Faculty of Sciences of Technology, Mentouri Brothers University of Constantine, P.B. 325, 25017 Constantine, AlgeriaHyperfrequencies and Semiconductor Laboratory, Faculty of Sciences of Technology, Mentouri Brothers University of Constantine, P.B. 325, 25017 Constantine, AlgeriaPolymer foams have acoustic absorption properties that play an important role in reducing noise level. When the skeleton is set to motion, it is necessary to use generalized Biot-Allard model which takes into account the deformation of the skeleton and the fluid and the interactions between them. The aim of this work is to study the quality of acoustic absorption in polyurethane foam and to show the importance of the structural vibration of this foam on the absorption by varying mechanical parameters (Young’s modulus E, Poisson’s coefficient ν, structural damping factor η, and the density ρ1). We calculated the absorption coefficient analytically using classical Biot formulation (us, uf) and numerically using Biot mixed formulation (us, p) in 3D COMSOL Multiphysics. The obtained results are compared together and show an excellent agreement. Afterwards, we studied the effect of varying each mechanical parameter independently on the absorption in interval of ±20%. The simulations show that these parameters have an influence on the sound absorption around the resonance frequency fr.http://dx.doi.org/10.1155/2015/896035 |
| spellingShingle | Lyes Dib Samia Bouhedja Hamza Amrani Mechanical Parameters Effects on Acoustic Absorption at Polymer Foam Advances in Materials Science and Engineering |
| title | Mechanical Parameters Effects on Acoustic Absorption at Polymer Foam |
| title_full | Mechanical Parameters Effects on Acoustic Absorption at Polymer Foam |
| title_fullStr | Mechanical Parameters Effects on Acoustic Absorption at Polymer Foam |
| title_full_unstemmed | Mechanical Parameters Effects on Acoustic Absorption at Polymer Foam |
| title_short | Mechanical Parameters Effects on Acoustic Absorption at Polymer Foam |
| title_sort | mechanical parameters effects on acoustic absorption at polymer foam |
| url | http://dx.doi.org/10.1155/2015/896035 |
| work_keys_str_mv | AT lyesdib mechanicalparameterseffectsonacousticabsorptionatpolymerfoam AT samiabouhedja mechanicalparameterseffectsonacousticabsorptionatpolymerfoam AT hamzaamrani mechanicalparameterseffectsonacousticabsorptionatpolymerfoam |