Imperial College London
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Dr Sébastien Guenneau

Faculty of Natural Sciences, Department of Physics

Reader in Physics
 
 
 
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Contact

 

s.guenneau Website

 
 
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Location

 

308cBlackett LaboratorySouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@unpublished{Varma:2020,
author = {Varma, TV and Ungureanu, B and Sarkar, S and Craster, R and Guenneau, S and Brule, S},
publisher = {arXiv},
title = {The influence of structure geometry and material on seismic metamaterial  performance},
url = {http://arxiv.org/abs/2007.14424v1},
year = {2020}
}
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RIS format (EndNote, RefMan)

TY  - UNPB
AB  - Diverting, and controlling, elastic vibrations impacting upon infrastructureis a major challenge for seismic hazard mitigation, and for the reduction ofmachine noise and vehicle vibration in the urban environment. Seismicmetamaterials (SMs), with their inherent ability to manipulate wavepropagation, provide a key route for overcoming the technological hurdlesinvolved in this challenge. Engineering the structure of the SM serves as abasis to tune and enhance its functionality, and inspired by split rings,swiss-rolls, notch-shaped and labyrinthine designs of elementary cells inelectromagnetic and mechanical metamaterials, we investigate altering thestructure geometries of SMs with the aim of creating large bandgaps\textcolor{black}{in a subwavelength regime}. We show that square stiffinclusions, perform better in comparison to circular ones, whilst keeping thesame filling fraction. En route to enhancing the bandgap, we have also studiedthe performance of SMs with different constituent materials; we find that steelcolumns, as inclusions, show large bandgaps, however, the columns are too largefor steel to be a feasible material in practical or financial terms.Non-reinforced concrete would be preferable for industry level scaling up ofthe technology because, concrete is cost-effective, easy to cast directly atthe construction site and easy to provide arbitrary geometry of the structure.As a part of this study, we show that concrete columns can also be designed toexhibit bandgaps if we cast them within a soft soil coating surrounding theprotected area for various civil structures like a bridge, building, oilpipelines etc.
AU  - Varma,TV
AU  - Ungureanu,B
AU  - Sarkar,S
AU  - Craster,R
AU  - Guenneau,S
AU  - Brule,S
PB  - arXiv
PY  - 2020///
TI  - The influence of structure geometry and material on seismic metamaterial  performance
UR  - http://arxiv.org/abs/2007.14424v1
UR  - http://hdl.handle.net/10044/1/81717
ER  -
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