Fano-like resonance phenomena by flexural shell modes in sound transmission through two-dimensional periodic arrays of thin-walled hollow cylinders

被引：39

作者：

Kosevich, Yuriy A.

Goffaux, Cecile

Sanchez-Dehesa, Jose

机构：

[1] Univ Politecn Valencia, Nanophoton Technol Ctr, Wave Phenomena Grp, E-46022 Valencia, Spain

[2] CENAERO, B-6041 Gosselies, Belgium

来源：

PHYSICAL REVIEW B | 2006年 / 74卷 / 01期

关键词：

D O I：

10.1103/PhysRevB.74.012301

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

It is shown that the n=2 and 3 flexural shell vibration modes of thin-walled hollow cylinders result in Fano-like resonant enhancement of sound wave transmission through or reflection from two-dimensional periodic arrays of these cylinders in air. The frequencies of the resonant modes are well described by the analytical theory of flexural (circumferential) modes of thin-walled hollow cylinders and are confirmed by finite-difference time-domain simulations. When the modes are located in the band gaps of the phononic crystal, an enhancement of the band-gap widths is produced by the additional restoring forces caused by the flexural shell deformations. Our conclusions provide an alternative method for the vibration control of airborne phononic crystals.

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页数：4

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