Lamb wave band gaps in locally resonant phononic crystal strip waveguides

被引：31

作者：

Yao, Yuanwei ^{[1
]}

Wu, Fugen ^{[2
]}

Zhang, Xin ^{[1
]}

Hou, Zhilin ^{[3
]}

机构：

[1] Guangdong Univ Technol, Dept Phys, Guangzhou 510006, Guangdong, Peoples R China

[2] Guangdong Univ Technol, Expt & Educ Ctr, Guangzhou 510006, Guangdong, Peoples R China

[3] S China Univ Technol, Dept Phys, Guangzhou 510640, Guangdong, Peoples R China

来源：

PHYSICS LETTERS A | 2012年 / 376卷 / 04期

基金：

中国国家自然科学基金;

关键词：

Lamb wave; Band gap; Local resonant;

D O I：

10.1016/j.physleta.2011.10.064

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Using finite element method, we have made a theoretically study of the band structure of Lamb wave in a locally resonant phononic crystal strip waveguide with periodic soft rubber attached on the two sides of epoxy main plate. The numerical results show that the Lamb wave band gap based on local resonant mechanism can be opened up in the stub strip waveguides, and the width of the local resonant band gap is narrower than that based on the Bragg scattering mechanism. The results also show that the stub shape and width have influence on the frequency and width of the Lamb wave band gap. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：579 / 583

页数：5

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