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dc.contributor.authorSweeney, John
dc.contributor.authorSpencer, Paul E.
dc.date.accessioned2016-10-12T15:51:15Z
dc.date.available2016-10-12T15:51:15Z
dc.date.issued2015-06
dc.identifier.citationSweeney J and Spencer PE (2015) The use of a new viscous process in constitutive models of polymers. Key Engineering Materials. Volume 651-653: 812-817.en_US
dc.identifier.urihttp://hdl.handle.net/10454/9905
dc.descriptionYesen_US
dc.description.abstractIn constitutive models of polymers, there has been a long history of the use of strain-rate dependent viscous processes, such as the Eyring and Argon models. These are combined with elastic elements to generate viscoplastic models that exhibit typical phenomena such as rate dependent yield, creep and stress relaxation. The Eyring process is one of the most frequently used such mechanisms. It has two significant drawbacks: it implies a temperature dependence of mechanical behaviour that is in an opposite sense to that observed; and it predicts a strain rate dependence of yield stress that is less complex than that observed, leading to the requirement for two or more Eyring processes. In recent years, new ideas for amorphous polymers have been developed that lead to an alternative plastic mechanism that addresses these concerns. In this paper a constitutive model that incorporates this mechanism is developed, and its effectiveness in modelling macroscopic mechanical behaviour of polymers is explored with respect to published data.en_US
dc.language.isoenen_US
dc.relation.isreferencedbyhttp://www.ttp.net/1013-9826/Books.htmlen_US
dc.rights© 2015 Trans Tech Publications Inc. Full-text reproduced in accordance with the publisher’s self-archiving policy.en_US
dc.subjectPolymer; Amorphous; Constitutive model; Yield; Stress relaxationen_US
dc.titleThe use of a new viscous process in constitutive models of polymersen_US
dc.status.refereedYesen_US
dc.typeArticleen_US
dc.type.versionAccepted Manuscripten_US
refterms.dateFOA2018-07-25T15:39:41Z


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