Show simple item record

dc.contributor.author
Karathanasopoulos, Nikolaos
dc.contributor.author
Dos Reis, Francisco
dc.contributor.author
Diamantopoulou, Marianna
dc.contributor.author
Ganghoffer, Jean-François
dc.date.accessioned
2020-02-10T11:57:21Z
dc.date.available
2020-02-08T00:18:59Z
dc.date.available
2020-02-10T11:57:21Z
dc.date.issued
2020-04
dc.identifier.issn
0264-1275
dc.identifier.issn
1873-4197
dc.identifier.other
10.1016/j.matdes.2020.108520
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/397680
dc.identifier.doi
10.3929/ethz-b-000397680
dc.description.abstract
In the current work, we demonstrate the potential of structures made of chiral artificial materials to balance bending loads through tensile loads, exploiting their inner normal to shear strain coupling. To that scope, we employ beam structures which we architecture with tetrachiral unit-cells. For the latter, we quantify their inherently coupled normal to shear strain behavior, making use of homogenization analysis techniques. We subsequently derive the equations that characterize the bending mechanics of beams with an inner bending to normal loading coupling, starting from first principles. Thereupon, we compute the normal forces required to equilibrate the effect of bending loads on beam structures, providing relevant closed-form parametric expressions. Using the derived analytical formulas, we carry out both numerical simulations and experiments for the case of cantilever beams. Results suggest that the coupling of normal and shear deformations can be used as a primal load-balancing mechanism, providing new possibilities in the control of the artificial structure's kinematics and overall mechanics.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Elsevier
en_US
dc.rights.uri
http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subject
Metamaterials
en_US
dc.subject
Chirality
en_US
dc.subject
Coupling
en_US
dc.subject
Bending
en_US
dc.subject
Balance
en_US
dc.subject
Strains
en_US
dc.title
Mechanics of beams made from chiral metamaterials: Tuning deflections through normal-shear strain couplings
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
dc.date.published
2020-01-25
ethz.journal.title
Materials & Design
ethz.journal.volume
189
en_US
ethz.journal.abbreviated
Mater. des.
ethz.pages.start
108520
en_US
ethz.size
11 p.
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
Amsterdam
en_US
ethz.publication.status
published
en_US
ethz.date.deposited
2020-02-08T00:19:04Z
ethz.source
SCOPUS
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2020-02-10T11:57:32Z
ethz.rosetta.lastUpdated
2021-02-15T07:54:31Z
ethz.rosetta.versionExported
true
ethz.COinS
ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.atitle=Mechanics%20of%20beams%20made%20from%20chiral%20metamaterials:%20Tuning%20deflections%20through%20normal-shear%20strain%20couplings&rft.jtitle=Materials%20&%20Design&rft.date=2020-04&rft.volume=189&rft.spage=108520&rft.issn=0264-1275&1873-4197&rft.au=Karathanasopoulos,%20Nikolaos&Dos%20Reis,%20Francisco&Diamantopoulou,%20Marianna&Ganghoffer,%20Jean-Fran%C3%A7ois&rft.genre=article&rft_id=info:doi/10.1016/j.matdes.2020.108520&
 Search print copy at ETH Library

Files in this item

Thumbnail

Publication type

Show simple item record