Please use this identifier to cite or link to this item: https://doi.org/10.1121/1.4744930
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dc.titleA quasi two-dimensional model for sound attenuation by the sonic crystals
dc.contributor.authorGupta, A.
dc.contributor.authorLim, K.M.
dc.contributor.authorChew, C.H.
dc.date.accessioned2014-06-16T09:34:28Z
dc.date.available2014-06-16T09:34:28Z
dc.date.issued2012-10
dc.identifier.citationGupta, A., Lim, K.M., Chew, C.H. (2012-10). A quasi two-dimensional model for sound attenuation by the sonic crystals. Journal of the Acoustical Society of America 132 (4) : 2909-2914. ScholarBank@NUS Repository. https://doi.org/10.1121/1.4744930
dc.identifier.issn00014966
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/54756
dc.description.abstractSound propagation in the sonic crystal (SC) along the symmetry direction is modeled by sound propagation through a variable cross-sectional area waveguide. A one-dimensional (1D) model based on the Webster horn equation is used to obtain sound attenuation through the SC. This model is compared with two-dimensional (2D) finite element simulation and experiment. The 1D model prediction of frequency band for sound attenuation is found to be shifted by around 500 Hz with respect to the finite element simulation. The reason for this shift is due to the assumption involved in the 1D model. A quasi 2D model is developed for sound propagation through the waveguide. Sound pressure profiles from the quasi 2D model are compared with the finite element simulation and the 1D model. The result shows significant improvement over the 1D model and is in good agreement with the 2D finite element simulation. Finally, sound attenuation through the SC is computed based on the quasi 2D model and is found to be in good agreement with the finite element simulation. The quasi 2D model provides an improved method to calculate sound attenuation through the SC. © 2012 Acoustical Society of America.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1121/1.4744930
dc.sourceScopus
dc.typeArticle
dc.contributor.departmentMECHANICAL ENGINEERING
dc.description.doi10.1121/1.4744930
dc.description.sourcetitleJournal of the Acoustical Society of America
dc.description.volume132
dc.description.issue4
dc.description.page2909-2914
dc.description.codenJASMA
dc.identifier.isiut000309651700016
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