Bandgap adjustment of a sandwich-like acoustic metamaterial plate with a frequency-displacement feedback control method

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外文摘要：Several types of acoustic metamaterials composed of resonant units have been developed to achieve low-frequency bandgaps.In most of these structures,bandgaps are determined by their geometric configurations and material properties.This paper presents a frequency-displacement feedback control method for vibration suppression in a sandwich-like acoustic metamaterial plate.The band structure is theoretically derived using the Hamilton principle and validated by comparing the theoretical calculation re-sults with the finite element simulation results.In this method,the feedback voltage is related to the displacement of a resonator and the excitation frequency.By applying a feedback voltage on the piezoelectric fiber-reinforced composite(PFRC)layers attached to a cantilever-mass resonator,the natural frequency of the resonator can be adjusted.It ensures that the bandgap moves in a frequency-dependent manner to keep the excitation frequency within the bandgap.Based on this frequency-displacement feedback control strategy,the bandgap of the metamaterial plate can be effectively adjusted,and the vi-bration of the metamaterial plate can be significantly suppressed.

外文关键词：

acoustic metamaterialHamilton principleelectromechanical couplingvibration controllocal resonance

作者：

Jianing LIU、Jinqiang LI、Ying WU

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作者单位：

School of Aerospace Engineering,Xi'an Jiaotong University,Xi'an 710049,China

College of Aerospace and Civil Engineering,Harbin Engineering University,Harbin 150001,China

基金：

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaFundamental Research Funds for the Central Universities of China

项目编号：

1247200712072084

出版年：

2024

DOI：

10.1007/s10483-024-3167-8

应用数学和力学(英文版)

上海大学

应用数学和力学(英文版)

影响因子：0.294

ISSN：0253-4827

年,卷(期)：2024.45(10)