Uniaxial Viscoplasticity Based on Total Strain and Overstress.

Abstract

A previously proposed uniaxial constitutive equation nonlinear in the Cauchy stress and the engineering strain but linear in the stress and strain rates is specialized to an overstress model. Two unknown coefficient functions are determined by extrapolation of room temperature relaxation data on Type 304 stainless steel. The stiff first-order nonlinear differential equations are then numerically integrated for a variety of test histories.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1978
Accession Number
ADA060149

Entities

People

  • E. Krempl
  • M. C. M. Liu

Organizations

  • Rensselaer Polytechnic Institute

Tags

DTIC Thesaurus Topics

  • Aeronautical Engineering
  • Constitutive Equations
  • Creep Tests
  • Differential Equations
  • Engineering
  • Equations
  • Materials
  • Mechanical Engineering
  • Mechanics
  • Military Research
  • Nonlinear Differential Equations
  • Plastic Properties
  • Stainless Steel
  • Steel
  • Strain Rate
  • Stress Strain Relations
  • Viscoplasticity

Readers

  • Calculus or Mathematical Analysis
  • Mechanical Engineering/Mechanics of Materials.