Merging Bragg and Local Resonance Bandgaps in Perforated Elastic Metamaterials with Embedded Spiral Holes

Xiangyu Tian,Wenjiong Chen,Renjing Gao,Shutian Liu

Journal of Sound and Vibration（2021）

引用 33|浏览7

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摘要

•Perforated elastic metamaterials for low-frequency and broadband wave attenuation.•Combining two bandgap formation mechanisms: Bragg scattering and local resonance.•Coiled waveguide created by spiral holes enhances wave scattering in matrix material.•Coupling modes generate coupling bandgap and improve wave attenuation ability.

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关键词

Perforated elastic metamaterials (EMMs),Bragg scattering,Local resonance,Coiled waveguide,Deaf band

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