Modeling and validation of the large deformation inelastic response of amorphous polymers over a wide range of temperatures and strain rates

J. Richeton, Said Ahzi, K. S. Vecchio, F. C. Jiang, A. Makradi

Research output: Contribution to journalArticle

142 Citations (Scopus)

Abstract

A robust physically consistent three-dimensional constitutive model is developed to describe the finite mechanical response of amorphous polymers over a wide range of temperatures and strain rates, including the rubbery region and for impact loading rates. This thermomechanical model is based on an elastic-viscoplastic rheological approach, wherein the effects of temperature, strain rate, and hydrostatic pressure are accounted for. Intramolecular, as well as intermolecular, interactions under large elastic-inelastic behavior are considered for the mechanisms of deformation and hardening. For a wide range of temperatures and strain rates, our simulated results for poly(methyl methacrylate) (PMMA) and polycarbonate (PC) are in good agreement with experimental observations.

Original languageEnglish
Pages (from-to)7938-7954
Number of pages17
JournalInternational Journal of Solids and Structures
Volume44
Issue number24
DOIs
Publication statusPublished - 1 Dec 2007
Externally publishedYes

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Keywords

  • Amorphous polymers
  • Impact loading rates
  • Modeling
  • Temperature and rate effects

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials

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