Stress- and strain-controlled cyclic deformation of polypropylene

A. D. Drozdov

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

Experimental data are reported on isotactic polypropylene in uniaxial tensile cyclic tests with stress- and strain-controlled programs. A constitutive model is developed that adequately describes stress-strain diagrams, and its parameters are found by fitting the observations. Numerical simulation demonstrates that fatigue failure in ratcheting tests is induced by pronounced growth of plastic strain in crystallites.

Original languageEnglish
Pages (from-to)198-202
Number of pages5
JournalComputational Materials Science
Volume64
DOIs
StatePublished - 1 Nov 2012
Externally publishedYes

Keywords

  • Constitutive modeling
  • Polypropylene
  • Viscoelasticity
  • Viscoplasticity

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