Publication date
2002Peer-Reviewed
YesOpen Access status
closedAccess
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High temperature reversion tests have revealed a state of pre-existing molecular orientation in extruded polyethylene sheet. This state is related to differences in stress-deformation behaviour when specimens of the sheet are stretched along different angles with respect to the extrusion direction. An established large deformation, rate-dependent constitutive equation has been developed to model this material, by incorporating the pre-orientation by the addition of a strained Gaussian network. The level of pre-orientation is deduced from the dimensional changes on shrinkage. The constitutive equation is incorporated into the finite element package , and the shapes and drawing forces of tensile specimens extended at various angles to the extrusion direction are modelled.Version
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Sweeney J, Caton-Rose PD and Coates PD (2002) The modelling of large deformations of pre-oriented polyethylene. Polymer. 43(3): 899-907.Link to Version of Record
https://doi.org/10.1016/S0032-3861(01)00624-3Type
Articleae974a485f413a2113503eed53cd6c53
https://doi.org/10.1016/S0032-3861(01)00624-3