Band Structure of Two-Dimension Phononic Crystal Plate

Abstract

Abstract: By using the super cell method,the authors calculat the acoustic wave band structure of the phononic crystal which consist of periodical array of steel cylinders growing on the both sides of the steel plate symmetrically in epoxy.The influence of the geometric parameters of the scatterer (the thickness of the board,the radius and height of the cylinder) on the band structure is analyzed.The calculated results indicate that this kind of phononic crystal has a more superior wide band gaps.The adjustment mechanism of band gap is much more convenient than that of the traditional phononic crystal.It is also found that the super cell method is an effective method to investigate the band structure of this kind of phononic crystal.

Key words: two-dimensions phononic crystal plate, super cell method, band gap

LEI Shi-Jian, WU Li-Hua, YAN Lin, ZHAO He-Ping. Band Structure of Two-Dimension Phononic Crystal Plate[J]. journal6, 2009, 30(4): 52-54.

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