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dc.contributor.authorCoates, Philip D.*
dc.contributor.authorSweeney, John*
dc.contributor.authorCaton-Rose, Philip D.*
dc.contributor.authorSpares, Robert*
dc.date.accessioned2009-10-26T13:14:53Z
dc.date.available2009-10-26T13:14:53Z
dc.date.issued2007
dc.identifier.citationSweeney J, Caton-Rose PD, Spares R and Coates PD (2007) A unified model of necking and shear banding in amorphous and semicrystalline polymers. Journal of Applied Polymer Science. 106(2): 1095-1105.en
dc.identifier.urihttp://hdl.handle.net/10454/3747
dc.descriptionNoen
dc.description.abstractIn tensile stretching, many polymers undergo strain localization. The geometrical form of the localization can take the form of either a shear band or an approximately symmetric neck. We present a constitutive model of the early stages of deformation that predicts which form the localization will take. The model consists of an Eyring process acting with a Gaussian network that is implemented numerically. A Levy-Mises flow rule associated with the Eyring process has a tendency to produce shear bands. A relatively stiff Gaussian network is used in a model of polycarbonate that ensures that most of the strain is taken up by the Eyring process, resulting in shear banding. In contrast, a relatively soft Gaussian network is used in a model of polyethylene, which takes up the greater part of the strain, resulting in a neck. The predictions are compared with experiments. For polyethylene, a two-Eyring-process model is introduced for better accuracy.en
dc.language.isoenen
dc.relation.isreferencedbyhtp://dx.doi.org/10.1002/app.26546en
dc.subjectMechanical propertiesen
dc.subjectOlefin polymeren
dc.subjectNumerical simulationen
dc.subjectFinite element methoden
dc.subjectGaussian networken
dc.subjectEyring modelen
dc.subjectPolyethyleneen
dc.subjectPolycarbonateen
dc.subjectSemicrystalline polymeren
dc.subjectAmorphous polymeren
dc.titleA unified model of necking and shear banding in amorphous and semicrystalline polymersen
dc.status.refereedYesen
dc.typeArticleen
dc.type.versionNo full-text available in the repositoryen


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