衰减
谐振器
声学
振幅
表面波
航程(航空)
中频
材料科学
频带
共振(粒子物理)
物理
光学
工程类
原子物理学
带宽(计算)
电信
复合材料
天文
作者
Farhad Zeighami,Antonio Palermo,Athanasios Vratsikidis,Zhibao Cheng,Dimitris Pitilakis,Alessandro Marzani
标识
DOI:10.1080/15397734.2020.1835487
摘要
In this work, we design an experimental campaign to assess the attenuation performance of a medium-scale resonant wave barrier operating within the frequency range of 50–100 Hz. In particular, the dispersive properties of (i) bare soil, (ii) a configuration of "dead masses" placed over the soil surface, and (iii) a locally resonant barrier, also known as metabarrier, are compared numerically. The resonant barrier introduces a significant amplitude reduction of the surface waves in a narrow frequency range around the resonant frequency of the resonators. Multiple-frequency barriers are designed with increasing and decreasing resonant frequencies to enlarge the attenuation frequency band.
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