Stress Relaxation of Nonlinear Thermoviscoelastic Materials Predicted from Known Creep

David Touati, Gabriel Cederbaum

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

A method to predict the stress relaxation response of nonlinear thermoviscoelastic materials from known creep data is presented. For given nonlinear creep properties, and creep compliance represented by the Prony series, it is shown that the Schapery creep model can be transformed into a set of first order nonlinear differential equations. By solving these equations the nonlinear stress relaxation curves for different strain and temperature levels are established. The strain/temperature-dependent constitutive equation can then be constructed for any nonlinear thermoviscoelastic model, as needed for engineering applications.

Original languageEnglish
Pages (from-to)321-330
Number of pages10
JournalMechanics of Time-Dependent Materials
Volume1
Issue number3
DOIs
StatePublished - 1 Jan 1997

Keywords

  • Creep
  • Nonlinear thermoviscoelastic materials
  • Schapery model
  • Stress relaxation
  • Time-dependent properties

ASJC Scopus subject areas

  • Chemical Engineering (all)
  • Materials Science (all)
  • Aerospace Engineering
  • Mechanical Engineering

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