Please use this identifier to cite or link to this item: https://doi.org/10.1121/1.4744930
Title: A quasi two-dimensional model for sound attenuation by the sonic crystals
Authors: Gupta, A.
Lim, K.M. 
Chew, C.H. 
Issue Date: Oct-2012
Source: Gupta, 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
Abstract: Sound 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.
Source Title: Journal of the Acoustical Society of America
URI: http://scholarbank.nus.edu.sg/handle/10635/54756
ISSN: 00014966
DOI: 10.1121/1.4744930
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

11
checked on Dec 5, 2017

WEB OF SCIENCETM
Citations

9
checked on Dec 5, 2017

Page view(s)

17
checked on Dec 11, 2017

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.