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arXiv · 1307.1605

Two-dimensional ternary locally resonant phononic crystals with a comblike coating

Yan-Feng Wang·Yue-Sheng Wang·Litian Wang
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Abstract

Two-dimensional ternary locally resonant phononic crystals used to consist of cylindrical scatterers with uniform coatings in their exterior. An alternative coating scheme with a comblike profile is proposed and investigated in this letter. The band structures are calculated by using the finite element method. It is found that a complete bandgap at a significantly low frequency can be induced. The mechanism for such a change is suggested by using an equivalent spring-mass model based on analyzing the eigen modes at the bandgap edges. Consistent results are obtained from the numerical results and the analysis of the spring-mass model.

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Yan-Feng Wang, Yue-Sheng Wang, Litian Wang. 2013-11-03. Two-dimensional ternary locally resonant phononic crystals with a comblike coating. https://doi.org/10.1088/0022-3727%2F47%2F1%2F015502

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