A model of adaptive links in finite viscoelastoplasticity of glassy polymers

A. D. Drozdov

Research output: Contribution to journalArticlepeer-review

Abstract

Constitutive equations are derived for the viscoelastoplastic response of glassy polymers at finite strains. The model combines the theory of temporary polymeric networks (in the version of a model of adaptive links) with the concept of semiaffine junctions. Viscoelasticity of polymers is modeled by breakage and reformation of adaptive links: (physical crosslinks and entanglements), whereas the viscoplastic phenomena are described by sliding of junctions with respect to a bulk medium. Thermodynamic potentials are proposed for nonaffine networks, and constitutive equations are developed using of the laws of thermodynamics. For uniaxial compression of a bar, fair agreement is demonstrated between results of numerical simulation and experimental data for polyethylene and poly(methyl methacrylate) during nonmonotonic loading.

Original languageEnglish
Pages (from-to)19-40
Number of pages22
JournalMathematical and Computer Modelling
Volume28
Issue number11
DOIs
StatePublished - 1 Dec 1998
Externally publishedYes

Keywords

  • Constitutive equations
  • Glassy polymers
  • Temporary networks
  • Viscoelasticity
  • Viscoplasticity

Fingerprint

Dive into the research topics of 'A model of adaptive links in finite viscoelastoplasticity of glassy polymers'. Together they form a unique fingerprint.

Cite this