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:: year 5, Issue 1 (Journal of Acoustical Engineering Society of Iran 2017) ::
مجله علمی پژوهشی انجمن مهندسی صوتیات ایران 2017, 5(1): 49-55 Back to browse issues page
Simulation of a sound waveguide by two-dimensional phononic crystal with a hexagonal latice
H. Salehi *, A. Gholampor, F. Shojainejad
Abstract:   (2168 Views)

In this Paper, at first a band structure of a two-dimensional phonon crystal with square lattice including polymetheyl methacrylate cylinders, in air matrix, waz considered. By accounting for the band gap range of this structure, a sound waveguide was simulated. The expected result was observed. Then, another structure with a hexagonal lattice, including aluminum cylinders in tungsten matrix material was studied. By utilizing a finite element, computational  method and COMSOL software and Matlab bandwidth structure was calculated. Also, the effect of symmetry on the width of the gap was investigated. By detecting the band gap, the simulation of an audio waveguide in the frequency range of 0.59 and 0.61 kHz was performed.

Keywords: Phononic crystal, Simulation, Sound waveguide, Band transmission, Band gap.
Full-Text [PDF 29 kb]   (810 Downloads)    
Type of Study: Research | Subject: Hydroacoustics
Received: 2016/10/11 | Accepted: 2017/09/6 | Published: 2017/09/22
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salehi H, Gholampor A, Shojainejad F. Simulation of a sound waveguide by two-dimensional phononic crystal with a hexagonal latice. مجله علمی پژوهشی انجمن مهندسی صوتیات ایران. 2017; 5 (1) :49-55
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year 5, Issue 1 (Journal of Acoustical Engineering Society of Iran 2017) Back to browse issues page
مجله علمی-پژوهشی انجمن مهندسی صوتیات ایران Journal of Acoustical Engineering Society of Iran
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