Wide Band-Gaps in Flexural Periodic Beams With Separated Force and Moment Resonators

被引：15

作者：

Wang, Michael Yu ^{[1
,2
]}

Choy, Yan Ting ^{[2
]}

Wan, Choi Wah ^{[2
]}

Zhao, Allen Song ^{[3
]}

机构：

[1] Natl Univ Singapore, Dept Mech Engn, Singapore 117575, Singapore

[2] Chinese Univ Hong Kong, Fac Engn, Shatin, Hong Kong, Peoples R China

[3] Univ Michigan, Coll Engn, Ann Arbor, MI 48109 USA

来源：

JOURNAL OF VIBRATION AND ACOUSTICS-TRANSACTIONS OF THE ASME | 2015年 / 137卷 / 06期

关键词：

Dispersions - Energy gap - Indium compounds - Vibrators;

D O I：

10.1115/1.4031519

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

As a locally resonant (LR) elastic system, a uniform Euler-Bernoulli beam suspended with force and moment resonators has complicated band-gap mechanisms and richer dispersive characteristics. In this paper, we consider the use of the force and moment resonators in a noncollocated manner. On the LR beam, the forcetype vibrators and the moment-type vibrators are alternatingly arranged, with a separation distance. We present an analytical study of the dispersion characteristics of the LR system, especially the effects of the separation distance on further widening the frequency stop bands. In addition, the complex dispersion properties on the frequency axis are described using a formulation different from the common approach.

引用

页数：6

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