A new approach to generate local resonator for the application of acoustic metamaterials

4th International Conference on Mechanical, Materials and Manufacturing

材料科学;机械制造

Sang, Sheng^1 ; Sandgren, Eric^1 ; Wang, Ziping^2

Department of System Engineering, University of Arkansas at Little Rock, Little Rock

AR

72204, United States^1

Faculty of Civil Engineering and Mechanics, Jiang Su University, Zhenjiang

212013, China^2

关键词: Acoustic metamaterial;    Acoustic metamaterials;    New approaches;    Plane wave;    Research and application;    Specific frequencies;    Vibration modes;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/272/1/012027/pdf
DOI  :  10.1088/1757-899X/272/1/012027

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

In this paper, we proposed a type of local resonator which works by introducing more than one vibration modes, and thus may provide a new approach to formulate acoustic/elastic metamaterial. Such new concept of resonator is fundamentally different from traditional translational and rotational resonators. The potential application and design of acoustic/elastic metamaterial based on this kind of structures are also illustrated. The acoustic metamaterial filter we developed has unique property that only the waves with specific frequency can pass the material while other waves will be attenuated. We also proposed a kind of plane wave lens which can transfer plane wave with uniformly distributed amplitude profiles into pure plane wave. With these novel resonators, the research and application regarding it are highly anticipated in the near future.