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Propagation Characteristics of Surface Waves in a Chiral Seismic Metamaterial Structure.

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Title: Propagation Characteristics of Surface Waves in a Chiral Seismic Metamaterial Structure.
Authors: Hu, Chengliang1 (AUTHOR), Yuan, Lili1 (AUTHOR) yuanlili@nbu.edu.cn, Ding, Yong1 (AUTHOR), Ma, Tingfeng2 (AUTHOR), Du, Jianke2 (AUTHOR)
Source: International Journal of Structural Stability & Dynamics. 10/15/2026, Vol. 26 Issue 22, p1-21. 21p.
Subjects: Surface waves (Fluids), Attenuation of seismic waves, Finite element method, Vibration isolation, Sound-wave attenuation, Structural engineering, Metamaterials
Abstract: The development of seismic metamaterials (SMs) offers a novel approach for isolating seismic waves. Nevertheless, achieving a broad low-frequency band gap within a compact structure remains a challenging issue that requires further resolution. To address this challenge, the study introduces a chiral structure into SMs. The designed chiral seismic metamaterial structure (CSMS) comprises four commonly used construction materials: soil, steel, rubber, and aluminum. The band structure, along with the sound cone, is explored through the application of the finite element method. The influence of geometric configurations and material properties on the band gaps is examined. In particular, the impacts of the count and curvature of the ligaments in the chiral structure on the band gap are investigated. The findings indicate that geometric and material parameters exert a substantial influence on the band gaps. The vibration energy is mainly concentrated in the chiral structure. Both Love and Rayleigh waves can be effectively attenuated within the band gaps, while seismic waves outside the band gaps cannot be attenuated effectively. Furthermore, the analysis of the frequency domain and time domain further validates the vibration-damping efficacy of the proposed structures in real earthquakes. Therefore, it can be concluded that low-frequency broadband gaps can be obtained to effectively control seismic wave propagation when a chiral structure is incorporated into SMs. The findings of this study can offer a theoretical basis for the application of chiral structures in SMs. [ABSTRACT FROM AUTHOR]
Copyright of International Journal of Structural Stability & Dynamics is the property of World Scientific Publishing Company and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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DbLabel: Engineering Source
An: 194224591
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PubTypeId: academicJournal
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: Propagation Characteristics of Surface Waves in a Chiral Seismic Metamaterial Structure.
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  Data: <searchLink fieldCode="AR" term="%22Hu%2C+Chengliang%22">Hu, Chengliang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yuan%2C+Lili%22">Yuan, Lili</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> yuanlili@nbu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Ding%2C+Yong%22">Ding, Yong</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ma%2C+Tingfeng%22">Ma, Tingfeng</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Du%2C+Jianke%22">Du, Jianke</searchLink><relatesTo>2</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22International+Journal+of+Structural+Stability+%26+Dynamics%22">International Journal of Structural Stability & Dynamics</searchLink>. 10/15/2026, Vol. 26 Issue 22, p1-21. 21p.
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  Data: <searchLink fieldCode="DE" term="%22Surface+waves+%28Fluids%29%22">Surface waves (Fluids)</searchLink><br /><searchLink fieldCode="DE" term="%22Attenuation+of+seismic+waves%22">Attenuation of seismic waves</searchLink><br /><searchLink fieldCode="DE" term="%22Finite+element+method%22">Finite element method</searchLink><br /><searchLink fieldCode="DE" term="%22Vibration+isolation%22">Vibration isolation</searchLink><br /><searchLink fieldCode="DE" term="%22Sound-wave+attenuation%22">Sound-wave attenuation</searchLink><br /><searchLink fieldCode="DE" term="%22Structural+engineering%22">Structural engineering</searchLink><br /><searchLink fieldCode="DE" term="%22Metamaterials%22">Metamaterials</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The development of seismic metamaterials (SMs) offers a novel approach for isolating seismic waves. Nevertheless, achieving a broad low-frequency band gap within a compact structure remains a challenging issue that requires further resolution. To address this challenge, the study introduces a chiral structure into SMs. The designed chiral seismic metamaterial structure (CSMS) comprises four commonly used construction materials: soil, steel, rubber, and aluminum. The band structure, along with the sound cone, is explored through the application of the finite element method. The influence of geometric configurations and material properties on the band gaps is examined. In particular, the impacts of the count and curvature of the ligaments in the chiral structure on the band gap are investigated. The findings indicate that geometric and material parameters exert a substantial influence on the band gaps. The vibration energy is mainly concentrated in the chiral structure. Both Love and Rayleigh waves can be effectively attenuated within the band gaps, while seismic waves outside the band gaps cannot be attenuated effectively. Furthermore, the analysis of the frequency domain and time domain further validates the vibration-damping efficacy of the proposed structures in real earthquakes. Therefore, it can be concluded that low-frequency broadband gaps can be obtained to effectively control seismic wave propagation when a chiral structure is incorporated into SMs. The findings of this study can offer a theoretical basis for the application of chiral structures in SMs. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of International Journal of Structural Stability & Dynamics is the property of World Scientific Publishing Company and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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    Identifiers:
      – Type: doi
        Value: 10.1142/S0219455426501865
    Languages:
      – Code: eng
        Text: English
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      Pagination:
        PageCount: 21
        StartPage: 1
    Subjects:
      – SubjectFull: Surface waves (Fluids)
        Type: general
      – SubjectFull: Attenuation of seismic waves
        Type: general
      – SubjectFull: Finite element method
        Type: general
      – SubjectFull: Vibration isolation
        Type: general
      – SubjectFull: Sound-wave attenuation
        Type: general
      – SubjectFull: Structural engineering
        Type: general
      – SubjectFull: Metamaterials
        Type: general
    Titles:
      – TitleFull: Propagation Characteristics of Surface Waves in a Chiral Seismic Metamaterial Structure.
        Type: main
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          Name:
            NameFull: Hu, Chengliang
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            NameFull: Yuan, Lili
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            NameFull: Ding, Yong
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            NameFull: Ma, Tingfeng
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            NameFull: Du, Jianke
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              M: 10
              Text: 10/15/2026
              Type: published
              Y: 2026
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              Value: 26
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            – TitleFull: International Journal of Structural Stability & Dynamics
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