Bandgap widening and resonator mass reduction through wave locking

IF 1.9 4区 工程技术 Q3 MECHANICS
L. Iorio, J.M. De Ponti, A. Corigliano, R. Ardito
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引用次数: 0

Abstract

Elastic metamaterials made of locally resonant arrays have been developed as effective ways to create band gaps for elastic or acoustic travelling waves. They work by implementing stationary states in the structure that localise and partially reflect waves. A different, simpler, way of obtaining band gaps is using phononic crystals, where the generated band gaps come from the periodic reflection and phase cancellation of travelling waves. In this work a different metamaterial structure that generates band gaps by means of coupling two contra-propagating modes is reported. This metamaterial, as it will be shown numerically and experimentally, generates larger band gaps with lower added mass, providing benefits for lighter structures.

通过锁波扩大带隙和减少谐振器质量
由局部共振阵列制成的弹性超材料已成为制造弹性行波或声波行波带隙的有效途径。他们的工作原理是在结构中实现固定状态,使波局部反射和部分反射。一种不同的、更简单的获得带隙的方法是使用声子晶体,其中产生的带隙来自于行波的周期性反射和相位抵消。在这项工作中,报告了一种不同的超材料结构,通过耦合两种反传播模式产生带隙。正如数值和实验所显示的那样,这种超材料可以产生更大的带隙,增加的质量更低,为更轻的结构提供了好处。
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来源期刊
CiteScore
4.10
自引率
4.20%
发文量
114
审稿时长
9 months
期刊介绍: Mechanics Research Communications publishes, as rapidly as possible, peer-reviewed manuscripts of high standards but restricted length. It aims to provide: • a fast means of communication • an exchange of ideas among workers in mechanics • an effective method of bringing new results quickly to the public • an informal vehicle for the discussion • of ideas that may still be in the formative stages The field of Mechanics will be understood to encompass the behavior of continua, fluids, solids, particles and their mixtures. Submissions must contain a strong, novel contribution to the field of mechanics, and ideally should be focused on current issues in the field involving theoretical, experimental and/or applied research, preferably within the broad expertise encompassed by the Board of Associate Editors. Deviations from these areas should be discussed in advance with the Editor-in-Chief.
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