Details
| Original language | English |
|---|---|
| Article number | 104601 |
| Journal | Mechanics of materials |
| Volume | 180 |
| Early online date | 1 Mar 2023 |
| Publication status | Published - May 2023 |
Abstract
The low-frequency wide-bandgap characteristics of the seismic metamaterial can suppress the propagation of vibrations and reduce the risk of extreme loadings such as earthquakes. The stringent requirement of lattice size extensively increawiths the cost of forming seismic metamaterial with general engineering materials. We design soil-expanded seismic metamaterial to reduce the scale restriction on artificial materials. Two types of soil-expanded lattice are created, and the bandgap characteristics for the lattice are obtained through the transfer matrix method. The propagation process for finite periodic lattice is simulated by the finite difference method in the time domain. It is found that the acceleration amplitudes in the wave propagation region are suppressed by 90% for the seismic metamaterial with rubber components. The response spectra further indicate that seismic metamaterials can reduce seismic risk in targeted areas.
Keywords
- Bandgap, Periodic structures, Seismic metamaterial, Seismic prevention, Soil-structure interaction, Vibration attenuation
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Instrumentation
- Materials Science(all)
- General Materials Science
- Engineering(all)
- Mechanics of Materials
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In: Mechanics of materials, Vol. 180, 104601, 05.2023.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Soil-expended seismic metamaterial with ultralow and wide bandgap
AU - Bai, Yongtao
AU - Li, Xiaolei
AU - Zhou, Xuhong
AU - Li, Peng
AU - Beer, Michael
N1 - Funding Information: This study was partially supported by the National Key R&D Program of China under Grant No. 2022YFB2602700 , the National Natural Science Fund for Excellent Young Scientists Fund Program, Scientific Research Fund of the Institute of Engineering Mechanics, China Earthquake Administration ( 2020EEEVL0413 ), the Fundamental Research Funds for the Central Universities (Grant No. 2022CDJKYJH052 ), and the Support Plan for Returned Overseas Scholars of Chongqing ( cx2020022 ).
PY - 2023/5
Y1 - 2023/5
N2 - The low-frequency wide-bandgap characteristics of the seismic metamaterial can suppress the propagation of vibrations and reduce the risk of extreme loadings such as earthquakes. The stringent requirement of lattice size extensively increawiths the cost of forming seismic metamaterial with general engineering materials. We design soil-expanded seismic metamaterial to reduce the scale restriction on artificial materials. Two types of soil-expanded lattice are created, and the bandgap characteristics for the lattice are obtained through the transfer matrix method. The propagation process for finite periodic lattice is simulated by the finite difference method in the time domain. It is found that the acceleration amplitudes in the wave propagation region are suppressed by 90% for the seismic metamaterial with rubber components. The response spectra further indicate that seismic metamaterials can reduce seismic risk in targeted areas.
AB - The low-frequency wide-bandgap characteristics of the seismic metamaterial can suppress the propagation of vibrations and reduce the risk of extreme loadings such as earthquakes. The stringent requirement of lattice size extensively increawiths the cost of forming seismic metamaterial with general engineering materials. We design soil-expanded seismic metamaterial to reduce the scale restriction on artificial materials. Two types of soil-expanded lattice are created, and the bandgap characteristics for the lattice are obtained through the transfer matrix method. The propagation process for finite periodic lattice is simulated by the finite difference method in the time domain. It is found that the acceleration amplitudes in the wave propagation region are suppressed by 90% for the seismic metamaterial with rubber components. The response spectra further indicate that seismic metamaterials can reduce seismic risk in targeted areas.
KW - Bandgap
KW - Periodic structures
KW - Seismic metamaterial
KW - Seismic prevention
KW - Soil-structure interaction
KW - Vibration attenuation
UR - http://www.scopus.com/inward/record.url?scp=85150768514&partnerID=8YFLogxK
U2 - 10.1016/j.mechmat.2023.104601
DO - 10.1016/j.mechmat.2023.104601
M3 - Article
AN - SCOPUS:85150768514
VL - 180
JO - Mechanics of materials
JF - Mechanics of materials
SN - 0167-6636
M1 - 104601
ER -