TY - JOUR
T1 - Band gap structure of acoustic wave in hexagonal phononic crystals with polyethylene matrix
AU - Tsai, Yu Lin
AU - Chen, Tungyang
N1 - Funding Information:
The financial support from the National Science Council of Taiwan under the grant NSC 99-2221-E-006-070-MY3 is acknowledged.
Publisher Copyright:
© 2014 Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license.
PY - 2014
Y1 - 2014
N2 - Phononic crystals have received some attention in the last decade due to their intrinsic property of band gaps. A band gap is a frequency range that acoustic waves cannot propagate within the periodic structure. In this paper, we propose a two-dimensional hexagonal phononic crystal that is composed of lead cylinders embedded in a polyethylene matrix. Using the finite element method, the dispersion diagram is calculated to identify the existence of band gaps. In addition, when a coating layer is introduced between the inclusion and the matrix, we find that the bandwidth and values of the gaps can be adjusted. In our demonstration, the band gap appear to be within the audible range with frequency 15400∼18000Hz. Thus, the present proposition may have potential applications in blocking high-frequency noise.
AB - Phononic crystals have received some attention in the last decade due to their intrinsic property of band gaps. A band gap is a frequency range that acoustic waves cannot propagate within the periodic structure. In this paper, we propose a two-dimensional hexagonal phononic crystal that is composed of lead cylinders embedded in a polyethylene matrix. Using the finite element method, the dispersion diagram is calculated to identify the existence of band gaps. In addition, when a coating layer is introduced between the inclusion and the matrix, we find that the bandwidth and values of the gaps can be adjusted. In our demonstration, the band gap appear to be within the audible range with frequency 15400∼18000Hz. Thus, the present proposition may have potential applications in blocking high-frequency noise.
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U2 - 10.1016/j.proeng.2014.06.387
DO - 10.1016/j.proeng.2014.06.387
M3 - Conference article
AN - SCOPUS:84949146785
SN - 1877-7058
VL - 79
SP - 612
EP - 616
JO - Procedia Engineering
JF - Procedia Engineering
T2 - 37th National Conference on Theoretical and Applied Mechanics, NCTAM 2013, Conjoined with the 1st International Conference on Mechanics, ICM 2013
Y2 - 8 November 2013 through 9 November 2013
ER -