Details
| Original language | English |
|---|---|
| Article number | 102180 |
| Number of pages | 8 |
| Journal | Extreme Mechanics Letters |
| Volume | 70 |
| Early online date | 6 Jun 2024 |
| Publication status | Published - Aug 2024 |
Abstract
It is challenging to achieve broadband isolation of ground vibration. In this work, pillared metastructures are proposed for broadband vibration isolation of surface wave in sandy soil numerically and experimentally. We first investigate two kinds of pillared metastructures, namely the pillars exposed on top of the soil or partially embedded in soil. Numerical and experimental results show that the case of partially embedded pillar has a wider and higher bandgap. Then we study gradient metastructures with linear or non-linear distributions of embedded depths, resulting in lower and wider attenuation frequency ranges, which are also validated by experiments. It is shown that gradient metastructures with a fixed ratio of bandgap overlaps to adjacent bandwidths have a greater advantage in low-frequency isolation. Our study provides great inspiration for simple design and manufacturing of new seismic metastructures to reduce surface waves or vibrations.
Keywords
- Broadband isolation, Pillared metastructure, Sandy soil, Surface wave
ASJC Scopus subject areas
- Chemical Engineering(all)
- Bioengineering
- Chemical Engineering(all)
- Chemical Engineering (miscellaneous)
- Engineering(all)
- Engineering (miscellaneous)
- Engineering(all)
- Mechanics of Materials
- Engineering(all)
- Mechanical Engineering
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In: Extreme Mechanics Letters, Vol. 70, 102180, 08.2024.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Experiment on broadband isolation of surface wave using pillared metastructures
AU - Wu, Xinyue
AU - Jin, Yabin
AU - Rabczuk, Timon
AU - Zhu, Hehua
AU - Zhuang, Xiaoying
N1 - Publisher Copyright: © 2024 Elsevier Ltd
PY - 2024/8
Y1 - 2024/8
N2 - It is challenging to achieve broadband isolation of ground vibration. In this work, pillared metastructures are proposed for broadband vibration isolation of surface wave in sandy soil numerically and experimentally. We first investigate two kinds of pillared metastructures, namely the pillars exposed on top of the soil or partially embedded in soil. Numerical and experimental results show that the case of partially embedded pillar has a wider and higher bandgap. Then we study gradient metastructures with linear or non-linear distributions of embedded depths, resulting in lower and wider attenuation frequency ranges, which are also validated by experiments. It is shown that gradient metastructures with a fixed ratio of bandgap overlaps to adjacent bandwidths have a greater advantage in low-frequency isolation. Our study provides great inspiration for simple design and manufacturing of new seismic metastructures to reduce surface waves or vibrations.
AB - It is challenging to achieve broadband isolation of ground vibration. In this work, pillared metastructures are proposed for broadband vibration isolation of surface wave in sandy soil numerically and experimentally. We first investigate two kinds of pillared metastructures, namely the pillars exposed on top of the soil or partially embedded in soil. Numerical and experimental results show that the case of partially embedded pillar has a wider and higher bandgap. Then we study gradient metastructures with linear or non-linear distributions of embedded depths, resulting in lower and wider attenuation frequency ranges, which are also validated by experiments. It is shown that gradient metastructures with a fixed ratio of bandgap overlaps to adjacent bandwidths have a greater advantage in low-frequency isolation. Our study provides great inspiration for simple design and manufacturing of new seismic metastructures to reduce surface waves or vibrations.
KW - Broadband isolation
KW - Pillared metastructure
KW - Sandy soil
KW - Surface wave
UR - http://www.scopus.com/inward/record.url?scp=85195321961&partnerID=8YFLogxK
U2 - 10.1016/j.eml.2024.102180
DO - 10.1016/j.eml.2024.102180
M3 - Article
AN - SCOPUS:85195321961
VL - 70
JO - Extreme Mechanics Letters
JF - Extreme Mechanics Letters
M1 - 102180
ER -