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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.accessioned2021-11-22T14:45:14Z
dc.date.available2021-11-22T14:45:14Z
dc.date.issued2021-11-18
dc.date.submitted2021-08-02
dc.identifier.others41467-021-27012-1
dc.identifier.other27012
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/330883
dc.description.abstractAbstract: Nematic 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.languageen
dc.publisherNature Publishing Group UK
dc.subjectArticle
dc.subject/639/166/988
dc.subject/639/638/298/303
dc.subject/639/301/923/1028
dc.subject/128
dc.subjectarticle
dc.titleImpact damping and vibration attenuation in nematic liquid crystal elastomers
dc.typeArticle
dc.date.updated2021-11-22T14:45:13Z
prism.issueIdentifier1
prism.publicationNameNature Communications
prism.volume12
dc.identifier.doi10.17863/CAM.78326
dcterms.dateAccepted2021-10-22
rioxxterms.versionofrecord10.1038/s41467-021-27012-1
rioxxterms.versionVoR
rioxxterms.licenseref.urihttp://creativecommons.org/licenses/by/4.0/
dc.contributor.orcidTerentjev, Eugene M. [0000-0003-3517-6578]
dc.identifier.eissn2041-1723
pubs.funder-project-idEC | EU Framework Programme for Research and Innovation H2020 | H2020 Excellent Science (H2020 Priority Excellent Science) (786659)


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