Design guidelines for flexural wave attenuation of slender beams with local resonators

被引:119
作者
Liu, Yaozong [1 ]
Yu, Dianlong
Li, Li
Zhao, Honggang
Wen, Jihong
Wen, Xisen
机构
[1] Natl Univ Def Technol, Inst Mechatron Engn, Changsha 410073, Peoples R China
[2] Natl Univ Def Technol, PBG Res Ctr, Changsha 410073, Peoples R China
关键词
D O I
10.1016/j.physleta.2006.10.056
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The complex band structures and attenuation spectra of flexural waves in slender beams with periodically mounted local resonators are investigated with transfer matrix method. It is noteworthy that the frequency range and attenuation coefficient of the locally resonant gap become larger in complex band structures if larger resonators were used. But given the total add-on mass of resonators, the attenuation spectra of finite beams with large but few resonators do not demonstrate such phenomena because the attenuation needs several periods to establish. So with the view of application, a large number of small local resonators widely spread along the beam are preferred given the total add-on mass to the beam. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码:344 / 347
页数:4
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