磁流变弹性体包层声学超材料的可调谐带隙结构

Q1 Arts and Humanities

Acta Acustica united with Acustica Pub Date : 2019-07-01 DOI:10.3813/aaa.919360

S. Liu, Yuechao Zhao, Dan Zhao, Lifeng Feng, Xinxin Shi, Lu Chen

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引用次数: 2

摘要

声学超材料面临的挑战之一是在不改变结构的情况下实现可调性能。本文提出了两种具有磁流变弹性体(MRE)的声学超材料，并采用有限元法研究了其可调带隙结构。MRE作为覆层，其剪切模量可以在外加磁场作用下发生改变。计算了两种声学超材料在不同磁场下的带隙，发现可以通过控制外加磁场来调节带隙的频率和宽度。这些结果有助于声学超材料在主动噪声和振动控制中的应用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Tunable Band Gap Structures of Acoustic Metamaterials with Magnetorheological Elastomer Cladding Layers

One of the challenges associated with acoustic metamaterials is achieving a tunable performance without modifying the structure. In this paper, we propose two types of acoustic metamaterials with a magnetorheological elastomer (MRE), and the tunable band gap structures of the acoustic metamaterials are investigated by the finite element method (FEM). The MRE acts as a cladding layer, and its shear modulus can be changed by an applied magnetic field. The band gaps of the two kinds of acoustic metamaterials are calculated for various magnetic fields, and it is found that the frequency and width of the band gaps can be adjusted by controlling the applied magnetic field. These results are helpful for the application of acoustic metamaterials in active noise and vibration control.

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来源期刊

Acta Acustica united with Acustica 物理-声学

CiteScore

2.60

自引率

0.00%

发文量

审稿时长

6.8 months

期刊介绍： Cessation. Acta Acustica united with Acustica (Acta Acust united Ac), was published together with the European Acoustics Association (EAA). It was an international, peer-reviewed journal on acoustics. It published original articles on all subjects in the field of acoustics, such as • General Linear Acoustics, • Nonlinear Acoustics, Macrosonics, • Aeroacoustics, • Atmospheric Sound, • Underwater Sound, • Ultrasonics, • Physical Acoustics, • Structural Acoustics, • Noise Control, • Active Control, • Environmental Noise, • Building Acoustics, • Room Acoustics, • Acoustic Materials and Metamaterials, • Audio Signal Processing and Transducers, • Computational and Numerical Acoustics, • Hearing, Audiology and Psychoacoustics, • Speech, • Musical Acoustics, • Virtual Acoustics, • Auditory Quality of Systems, • Animal Bioacoustics, • History of Acoustics.