Broadband and omnidirectional attenuation of bulk waves in transversely isotropic soil by cross-like metamaterials

authored by: Runcheng Cai, Yabin Jin, Yan Pennec, Bahram Djafari-Rouhani, Timon Rabczuk, Xiaoying Zhuang
Abstract: Metamaterials with bandgap properties have been widely studied and applied in the attenuation of surface and bulk waves propagating in the soil. However, most of the studies consider soil as the isotropic medium and ignore the general anisotropy property from the practical point of view. In this work, we consider the transversely isotropic constitutive model of soil and propose a cross-like metamaterial consisting of concrete inclusion and rubber coating to achieve broadband attenuation for omnidirectional bulk waves. The proposed cross-like metamaterials have more and wider bandgaps compared to circle and square metamaterials, and they have better wave attenuation performance in transversely isotropic soil with higher degrees of anisotropy. The transmission spectra of cross-like metamaterials demonstrate the wave attenuation effect of bandgaps. Furthermore, we build the full-scale transmission model considering the subway tunnel condition and demonstrate the practical wave attenuation performance of cross-like metamaterials in frequency and time domains. We also find that a larger depth of the metamaterial region will enhance wave attenuation in the bandgaps while considering rubber viscosity can enhance wave attenuation in the overall frequency ranges. The variations of omnidirectional bandgaps with rubber thickness, geometric parameters, and hollow concrete sizes are discussed. This study presents an appropriate way to design metamaterials for broadband omnidirectional bulk wave attenuation in transversely isotropic soil, which can be easily extended to other anisotropic media.
Organisation(s): Institute of Photonics
External Organisation(s): Tongji University
Lille 1 University of Science and Technology
Bauhaus-Universität Weimar
Type: Article
Journal: Journal of applied physics
Volume: 136
No. of pages: 15
ISSN: 0021-8979
Publication date: 28.12.2024
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: General Physics and Astronomy
Electronic version(s): https://doi.org/10.1063/5.0239151 (Access: Open)
: Details in the research portal "Research@Leibniz University"

BibTeX

@article{d4b7eaa35aa74808b98e12254b695f84,
title = "Broadband and omnidirectional attenuation of bulk waves in transversely isotropic soil by cross-like metamaterials",
abstract = "Metamaterials with bandgap properties have been widely studied and applied in the attenuation of surface and bulk waves propagating in the soil. However, most of the studies consider soil as the isotropic medium and ignore the general anisotropy property from the practical point of view. In this work, we consider the transversely isotropic constitutive model of soil and propose a cross-like metamaterial consisting of concrete inclusion and rubber coating to achieve broadband attenuation for omnidirectional bulk waves. The proposed cross-like metamaterials have more and wider bandgaps compared to circle and square metamaterials, and they have better wave attenuation performance in transversely isotropic soil with higher degrees of anisotropy. The transmission spectra of cross-like metamaterials demonstrate the wave attenuation effect of bandgaps. Furthermore, we build the full-scale transmission model considering the subway tunnel condition and demonstrate the practical wave attenuation performance of cross-like metamaterials in frequency and time domains. We also find that a larger depth of the metamaterial region will enhance wave attenuation in the bandgaps while considering rubber viscosity can enhance wave attenuation in the overall frequency ranges. The variations of omnidirectional bandgaps with rubber thickness, geometric parameters, and hollow concrete sizes are discussed. This study presents an appropriate way to design metamaterials for broadband omnidirectional bulk wave attenuation in transversely isotropic soil, which can be easily extended to other anisotropic media.",
author = "Runcheng Cai and Yabin Jin and Yan Pennec and Bahram Djafari-Rouhani and Timon Rabczuk and Xiaoying Zhuang",
note = "Publisher Copyright: {\textcopyright} 2024 Author(s).",
year = "2024",
month = dec,
day = "28",
doi = "10.1063/5.0239151",
language = "English",
volume = "136",
journal = "Journal of applied physics",
issn = "0021-8979",
publisher = "American Institute of Physics",
number = "24",
}

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