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dc.contributor.authorSaed, Mohand O
dc.contributor.authorElmadih, Waiel
dc.contributor.authorTerentjev, Andrew
dc.contributor.authorChronopoulos, Dimitrios
dc.contributor.authorWilliamson, David
dc.contributor.authorTerentjev, Eugene M
dc.date.accessioned2022-01-07T16:52:01Z
dc.date.available2022-01-07T16:52:01Z
dc.date.issued2021-11-18
dc.identifier.issn2041-1723
dc.identifier.otherPMC8602409
dc.identifier.other34795251
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/332405
dc.description.abstractNematic liquid crystal elastomers (LCE) exhibit unique mechanical properties, placing them in a category distinct from other viscoelastic systems. One of their most celebrated properties is the 'soft elasticity', leading to a wide plateau of low, nearly-constant stress upon stretching, a characteristically slow stress relaxation, enhanced surface adhesion, and other remarkable effects. The dynamic soft response of LCE to shear deformations leads to the extremely large loss behaviour with the loss factor tanδ approaching unity over a wide temperature and frequency ranges, with clear implications for damping applications. Here we investigate this effect of anomalous damping, optimising the impact and vibration geometries to reach the greatest benefits in vibration isolation and impact damping by accessing internal shear deformation modes. We compare impact energy dissipation in shaped samples and projectiles, with elastic wave transmission and resonance, finding a good correlation between the results of such diverse tests. By comparing with ordinary elastomers used for industrial damping, we demonstrate that the nematic LCE is an exceptional damping material and propose directions that should be explored for further improvements in practical damping applications.
dc.description.sponsorshipERC H2020
dc.languageeng
dc.publisherSpringer Science and Business Media LLC
dc.rightsAttribution 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.sourceessn: 2041-1723
dc.sourcenlmid: 101528555
dc.titleImpact damping and vibration attenuation in nematic liquid crystal elastomers.
dc.typeArticle
dc.date.updated2022-01-07T16:52:00Z
prism.issueIdentifier1
prism.publicationNameNat Commun
prism.volume12
dc.identifier.doi10.17863/CAM.79851
dcterms.dateAccepted2021-10-22
rioxxterms.versionofrecord10.1038/s41467-021-27012-1
rioxxterms.versionVoR
rioxxterms.licenseref.urihttps://creativecommons.org/licenses/by/4.0/
dc.contributor.orcidTerentjev, Eugene M [0000-0003-3517-6578]
dc.identifier.eissn2041-1723
pubs.funder-project-idEuropean Research Council (786659)
cam.issuedOnline2021-11-18


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Attribution 4.0 International
Except where otherwise noted, this item's licence is described as Attribution 4.0 International