A Summary of the Bodner-Stouffer Constitutive Model

Abstract

Classical techniques of modelling creep and plasticity have a high degree of accuracy provided the inelastic strains are kept small. However, they are poor in describing material behaviour where significant inelastic strains or unloading are involved. In a recent investigation, a number of unified constitutive models were examined. In these approaches, a single inelastic strain tensor is used to model both creep and plasticity. A new constitutive equation was then proposed. This report describes this new approach, and discusses a FORTRAN program which uses these new equations to predict material behaviour of high temperature superalloys. Given either stress or stain values as input data, it evaluates the state variables, i.e., drag stress, back stress etc., the ineleastic strain rate and the inelastic work. Keywords: One dimensional; Australia.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1989
Accession Number
ADA214532

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  • N. Bridgford

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  • Computational Modeling and Simulation
  • Mechanical Engineering/Mechanics of Materials.