Modular Design for Acoustic Metamaterials: Low‐Frequency Noise Attenuation. (13th December 2021)

• Record Type: Journal Article
• Authors: Wu, Lingling; Zhai, Zirui; Zhao, Xinguang; Tian, Xiaoyong; Li, Dichen; Wang, Qianxuan; Jiang, Hanqing
• Is Part Of: Advanced functional materials. Volume 32:Number 13(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2021-12-13
• Subjects: acoustic metamaterials -- genetic algorithm -- Helmholtz resonator -- modular design -- sound attenuation; Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adfm.202105712
• Languages: English
• ISSNs: 1616-301X

Abstract

Abstract: A modular design method is introduced to design an acoustic metamaterial based on nested Helmholtz resonators that target low‐frequency sound attenuation. The method combines a performance evaluation using finite element methods with structural evolution, and uses a genetic algorithm to optimize the acoustic metamaterial to attain the desired properties. Both the simulated and experimental results demonstrate the noise attenuation property of the optimized acoustic metamaterials. The modular design method proposed by this study may potentially design acoustic metamaterials for practical sound attenuation applications in industries by considering different environments and constraints. Abstract : A modular design method is used to search for an acoustic metamaterial based on nested Helmholtz resonators that target low‐frequency sound attenuation. The optimized acoustic metamaterial shows great sound barriers performance in the optimization frequency region. The method is also applicable to the general design of acoustic metamaterials in different frequency ranges.