Analytical approach of membrane-type acoustic metamaterial with ring masses
Multidiscipline Modeling in Materials and Structures
ISSN: 1573-6105
Article publication date: 20 September 2018
Issue publication date: 29 October 2018
Abstract
Purpose
Membrane-type acoustic metamaterials (MAMs) recently have been emerged to display useful sound attenuation properties in a low-frequency regime. The purpose of this paper is to present an analytical approach to investigate the transmission loss (TL) of a square membrane-ring structure of MAM. The geometrical effects of ring mass on the TL peak and dip frequencies of the MAM are obtained and discussed.
Design/methodology/approach
In this paper, based on the wave propagation and vibration theory, considering the effects of ring mass and acoustic pressure on the membrane, an analytical model is presented to analyze acoustic response of MAM.
Findings
Multiple peak frequencies and wide bandwidth appear in the membrane-ring structure, and they can be tuned by changing the location or numbers of the ring mass on the membrane. It is a useful method for designing such type of metamaterial.
Originality/value
In this paper, an analytical method is presented to evaluate the effects of ring geometric on the TL performance of square membrane-type locally resonant metamaterial. It is proved that achieving broadband and multi-peak TL profile in a single cell can indeed happen by increasing additional ring mass. The TL and frequency bandwidth can be tuned by changing the location, adding numbers and varying mass distribution of the ring masses on the membrane.
Keywords
Acknowledgements
This paper is supported by National Science Foundation of Hebei Province (Grant No. A2016202195), Key Laboratory of Special Function Materials and Structure Design, Ministry of Education, Tianjin Excellent Science and Technology Correspondent (Grant No. 16JCTPJC53100) and Scientific Research Key Project of Hebei Province Education Department (Grant No. ZD2016083).
Citation
Tian, H., Tong, D. and Tao, Y. (2018), "Analytical approach of membrane-type acoustic metamaterial with ring masses", Multidiscipline Modeling in Materials and Structures, Vol. 14 No. 5, pp. 828-836. https://doi.org/10.1108/MMMS-12-2017-0167
Publisher
:Emerald Publishing Limited
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