Thermo-viscoelastic and viscoplastic behavior of high-density polyethylene

A. D. Drozdov, J. de C. Christiansen

Research output: Contribution to journalArticlepeer-review

41 Scopus citations

Abstract

Observations are reported on high-density polyethylene in uniaxial tensile tests with constant strain rates and relaxation tests at various temperatures ranging from 25 to 90 °C. A constitutive model is derived for the nonlinear viscoelastic and viscoplastic behavior of semi-crystalline polymers at three-dimensional deformations. Adjustable parameters in the stress-strain relations are found by fitting the experimental data. It is demonstrated that (i) the model correctly approximates the observations and (ii) material parameters are independent of strain rate and change consistently with temperature.

Original languageEnglish
Pages (from-to)4274-4288
Number of pages15
JournalInternational Journal of Solids and Structures
Volume45
Issue number14-15
DOIs
StatePublished - 1 Jul 2008
Externally publishedYes

Keywords

  • Constitutive laws
  • Polymers
  • Thermomechanical
  • Viscoelastic
  • Viscoplastic

ASJC Scopus subject areas

  • Modeling and Simulation
  • Materials Science (all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Applied Mathematics

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