Acoustic Filters and Switches using Auxetic Metamaterials
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- 英文论文题名：Acoustic Filters and Switches using Auxetic Metamaterials
- 论文作者：Hsin-Haou HUANG
- 英文论文作者：Hsin-Haou HUANG ; Department of Engineering Science and Ocean Engineering ; Taiwan University
- 年：2016
- 作者机构：Department of Engineering Science and Ocean Engineering,Taiwan University;
- 英文论文关键词：Auxetic metamaterial ; Deformation-driven tunable bandgap ; Anti-tetrachiral structure ; Acoustic filter ; Acoustic switch
- 会议召开时间：2016-09-04
- 会议录名称：2016海峡两岸流体力学研讨会论文摘要集
- 语种：英文
- 分类号：TN713
- 学会代码：AGLU
- 会议名称：2016海峡两岸流体力学研讨会
- 会议地点：中国青海西宁
- 主办单位：中国力学学会
- 学会名称：中国力学学会
- 页数：1
- 文件大小：4690k
- 原文格式：D
- 会议级别：全国
摘要
Metamaterials, composed of artificial periodic microstructures, possess unusual properties such as negative Poisson's ratio, negative Young's modulus, negative effective mass density and/or other properties that are not found in nature materials. Recently, much work has been done on studying the deformation-driven tunable metamaterials, while little has considered deformation of the microstructures in the linearly elastic region. In this study, we present examples of the antitetrachiral auxetic structures that are used as deformation-driven tunable metamaterials and can be deformed in the linearly elastic region, leading to change of the band structures for wave propagation. Finite element simulations were validated by the experimental observations, and the results were found to be in good agreement. The proposed structures could be exploited to turn on or off the bandgaps directionally in the linear-elastic region and those appeared in specific directions according to the deformed directions. This study not only provides options of solutions for acoustic filtering, but also opens avenues for the design of acoustic switches.
Metamaterials, composed of artificial periodic microstructures, possess unusual properties such as negative Poisson's ratio, negative Young's modulus, negative effective mass density and/or other properties that are not found in nature materials. Recently, much work has been done on studying the deformation-driven tunable metamaterials, while little has considered deformation of the microstructures in the linearly elastic region. In this study, we present examples of the antitetrachiral auxetic structures that are used as deformation-driven tunable metamaterials and can be deformed in the linearly elastic region, leading to change of the band structures for wave propagation. Finite element simulations were validated by the experimental observations, and the results were found to be in good agreement. The proposed structures could be exploited to turn on or off the bandgaps directionally in the linear-elastic region and those appeared in specific directions according to the deformed directions. This study not only provides options of solutions for acoustic filtering, but also opens avenues for the design of acoustic switches.
Metamaterials, composed of artificial periodic microstructures, possess unusual properties such as negative Poisson's ratio, negative Young's modulus, negative effective mass density and/or other properties that are not found in nature materials. Recently, much work has been done on studying the deformation-driven tunable metamaterials, while little has considered deformation of the microstructures in the linearly elastic region. In this study, we present examples of the antitetrachiral auxetic structures that are used as deformation-driven tunable metamaterials and can be deformed in the linearly elastic region, leading to change of the band structures for wave propagation. Finite element simulations were validated by the experimental observations, and the results were found to be in good agreement. The proposed structures could be exploited to turn on or off the bandgaps directionally in the linear-elastic region and those appeared in specific directions according to the deformed directions. This study not only provides options of solutions for acoustic filtering, but also opens avenues for the design of acoustic switches.
引文