Effect of yielding on the viscoelastic response of amorphous glassy polymers

Aleksey D. Drozdov

Research output: Contribution to journalArticlepeer-review

Abstract

Constitutive equations are derived for the nonlinear viscoelastic behavior of amorphous glassy polymers. The model is based on the theory of cooperative relaxation in a version of the trapping concept. Stress-strain relations are applied to fit experimental data for polycarbonate in the sub-yield and post-yield regions. Fair agreement is demonstrated between observations and results of numerical simulation. It is revealed that yielding causes substantial changes in the energy landscape of amorphous polymers.

Original languageEnglish
Pages (from-to)2383-2393
Number of pages11
JournalJournal of Applied Polymer Science
Volume80
Issue number13
DOIs
StatePublished - 24 Jun 2001
Externally publishedYes

Keywords

  • Amorphous polymers
  • Energy landscape
  • Trapping concept
  • Viscoelasticity
  • Viscoplasticity

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