The band gaps of Lamb waves in a ribbed plate: A semi-analytical calculation approach

被引：9

作者：

Feng, Feilong ^{[1
,2
]}

Lin, Shuyu ^{[1
]}

机构：

[1] Shaanxi Normal Univ, Inst Appl Acoust, Xian 710062, Peoples R China

[2] Xian Polytech Univ, Sch Sci, Xian 710048, Peoples R China

来源：

JOURNAL OF SOUND AND VIBRATION | 2014年 / 333卷 / 01期

基金：

中国博士后科学基金;

关键词：

2-DIMENSIONAL PHONONIC CRYSTAL; SCATTERING MATRICES; GUIDES; PROPAGATION; SURFACE; MODES;

D O I：

10.1016/j.jsv.2013.09.016

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

In this paper a semi-analytical method is proposed to investigate the transmission band gaps of Lamb waves through repetitive structures in a waveguide. For a unit cell the scattering matrix is obtained by the Lamb mode matching technique at each artificially sliced interface and then substituted into the Bloch theorem to solve the eigenproblem incurred by cell repetition. The method is implemented on a ribbed plate. The band gaps in the dispersion curves are confirmed by the dips of Lamb wave transmission coefficients, and attributed to the coupled vibrations of Lamb modes in different sliced sections of the unit cell. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：124 / 131

页数：8

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