Imperial College London
Alternate

ProfessorRichardCraster

Faculty of Natural Sciences

Dean of the Faculty of Natural Sciences
 
 
 
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Contact

 

+44 (0)20 7594 8554r.craster Website

 
 
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Assistant

 

Miss Hannah Cline +44 (0)20 7594 1934

 
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Location

 

3.05Faculty BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Aguzzi:2022:10.1063/5.0119903,
author = {Aguzzi, G and Thomsen, HR and Nooghabi, AH and Wiltshaw, R and Craster, RV and Chatzi, EN and Colombi, A},
doi = {10.1063/5.0119903},
journal = {Applied Physics Letters},
title = {Architected frames for elastic wave attenuation: Experimental validation and local tuning via affine transformation},
url = {http://dx.doi.org/10.1063/5.0119903},
volume = {121},
year = {2022}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - We experimentally demonstrate the capability of architected plates, with a frame-like cellular structure, to inhibit the propagation of elastic flexural waves. By leveraging the octet topology as a unit cell to design the tested prototypes, a broad and easy-to-tune bandgap is experimentally generated. The experimental outcomes are supported by extensive numerical analyses based on 3D solid elements. Drawing from the underlying dynamic properties of the octet cell, we numerically propose a tailorable design with enhanced filtering capabilities. We transform the geometry of the original unit cell by applying a uniaxial scaling factor that, by breaking the in-plane symmetry of the structure, yields independently tuned struts and consequently multiple tunable bandgaps within the same cell. Our findings expand the spectrum of available numerical analyses on the octet lattice, taking it a significant step closer to its physical implementation. The ability of the octet lattice to control the propagation of flexural vibrations is significant within various applications in the mechanical and civil engineering domains, and we note such frame-like designs could lead to advancements in energy harvesting and vibration protection devices (e.g., lightweight and resonance-tunable absorbers).
AU  - Aguzzi,G
AU  - Thomsen,HR
AU  - Nooghabi,AH
AU  - Wiltshaw,R
AU  - Craster,RV
AU  - Chatzi,EN
AU  - Colombi,A
DO  - 10.1063/5.0119903
PY  - 2022///
SN  - 0003-6951
TI  - Architected frames for elastic wave attenuation: Experimental validation and local tuning via affine transformation
T2  - Applied Physics Letters
UR  - http://dx.doi.org/10.1063/5.0119903
UR  - https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000885262000026&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=a2bf6146997ec60c407a63945d4e92bb
UR  - http://hdl.handle.net/10044/1/105999
VL  - 121
ER  -
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