Rate- and temperature-dependent strain hardening of polycarbonate

D.J.A. Senden, S. Krop, J.A.W. Dommelen, van, L.E. Govaert

Research output: Contribution to journalArticleAcademicpeer-review

39 Citations (Scopus)
18 Downloads (Pure)

Abstract

The modeling and quantification of a viscous contribution to strain hardening is discussed. Traditional strain hardening models, based on rubber-elasticity, show serious deviations from the experimentally observed large-strain response of glassy polymers. Therefore, to capture both the strain rate and temperature dependence of strain hardening correctly, a part of the rubber-elastic strain hardening is replaced with a viscous contribution. This is realized by introducing a deformation-dependent viscosity in the Eindhoven Glassy Polymer model. Verification of the accuracy of the model proposed is done using a set of uniaxial compression tests on polycarbonate at different strain rates and temperatures. An accurate description of all experimental data results and, moreover, the model quantitatively captures the Bauschinger effect observed in oriented polycarbonate.
Original languageEnglish
Pages (from-to)1680-1693
Number of pages14
JournalJournal of Polymer Science, Part B: Polymer Physics
Volume50
Issue number24
DOIs
Publication statusPublished - 2012

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