A non-linear viscoelastic model for predicting the yield stress of amorphous polymers

Spathis, G; Maggana, C

dc.contributor.author	Spathis, G	en
dc.contributor.author	Maggana, C	en
dc.date.accessioned	2014-03-01T01:12:33Z
dc.date.available	2014-03-01T01:12:33Z
dc.date.issued	1997	en
dc.identifier.issn	0032-3861	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/12137
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0031141164&partnerID=40&md5=f9b4c988298f4196f2c6a5c4a2d67e89	en
dc.subject	Amorphous polymer	en
dc.subject	Non-linear viscoelasticity	en
dc.subject	Yield-stress	en
dc.subject.classification	Polymer Science	en
dc.subject.other	Amorphous materials	en
dc.subject.other	Mathematical models	en
dc.subject.other	Reaction kinetics	en
dc.subject.other	Relaxation processes	en
dc.subject.other	Thermal effects	en
dc.subject.other	Viscoelasticity	en
dc.subject.other	Viscous flow	en
dc.subject.other	Yield stress	en
dc.subject.other	Amorphous polymers	en
dc.subject.other	Polymers	en
dc.title	A non-linear viscoelastic model for predicting the yield stress of amorphous polymers	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	1997	en
heal.abstract	A non-linear viscoelastic model is introduced by employing a new formulation where the relaxation time of rate processes is directly dependent on the induced deformation state applied to the material. The plastic flow of amorphous polymers is considered as a continuous structural change, and the yield phenomenon is modelled through the corresponding viscoelastic constitutive equations. All material constants necessary to predict the yield stress, the rate and temperature dependence are non-adjustable parameters depending on the particular deformation mode. To verify the results of the proposed model, two independent series of experiments have been performed on specific polymeric materials, and have been proved to satisfy adequately the proposed analysis. (C) 1997 Elsevier Science Ltd.	en
heal.publisher	ELSEVIER SCI LTD	en
heal.journalName	Polymer	en
dc.identifier.isi	ISI:A1997WX11400009	en
dc.identifier.volume	38	en
dc.identifier.issue	10	en
dc.identifier.spage	2371	en
dc.identifier.epage	2377	en