Adjustable low-frequency bandgap of flexural wave in an Euler-Bernoulli meta-beam with inertial amplified resonators

被引：30

作者：

Wang, Shuai ^{[1
,2
]}

Wang, Minqing ^{[1
,2
]}

Guo, Zhiwei ^{[1
,2
]}

机构：

[1] Northwestern Polytech Univ, Sch Marine Sci & Technol, Xian 710072, Shaanxi, Peoples R China

[2] Northwestern Polytech Univ, Ningbo Inst, Ningbo 315103, Zhejiang, Peoples R China

来源：

PHYSICS LETTERS A | 2021年 / 417卷

关键词：

Adjustable low-frequency bandgap; Flexural wave; Inertial amplification; Wide bandwidth; Frequency bandgap; 2-DIMENSIONAL PHONONIC CRYSTALS; AMPLIFICATION; GAP; METAMATERIAL; PROPAGATION; ATTENUATION; BEHAVIOR;

D O I：

10.1016/j.physleta.2021.127671

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In order to suppress the low-frequency flexural wave propagation, an Euler-Bernoulli meta-beam with periodically attached inertial amplified resonators was designed. The bandgap characteristics of the meta-beam with inertial amplified resonators were analyzed by the transfer matrix method. An adjustable low-frequency bandgap is obtained by the dynamic design of lever. Corresponding simulations were carried out. Results show that, the frequency bandgap of the meta-beam with inertial amplified resonators is much lower and wider than that with spring-mass resonators of equal mass. In addition, an adjustability of the frequency bandgap is easily achieved. This study provides guidance for the suppression of flexural waves. (C) 2021 Elsevier B.V. All rights reserved.

引用

页数：8

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