A Theory of Thermoviscoplasticity Based on Infinitesimal Total Strain.

Abstract

A theory of three-dimensional infinitesimal isotropic thermoviscoplasticity is proposed and investigated in several homogeneous deformations. The theory is represented by both a mechnical constitutive equation and a constitutive assumption for the heat equation; these equations are separately postulated but are coupled through their common linear dependence upon the stress rate and strain rate tensors and the time rate of temperature change, and through their common nonlinear dependence upon the stress and strain tensors and the absolute temperature. Throughout this theory total strain is used and the strain tensor is not decomposed into a sum of elastic and inelastic contributions. The concept of the yield surface is not employed and the transition from initially linear thermoelastic behavior to nonlinear inelastic behavior is continuous.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1979
Accession Number
ADA069597

Entities

People

  • E. Krempl
  • E. P. Cernocky

Organizations

  • Rensselaer Polytechnic Institute

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Boundaries
  • Climate Change
  • Cold Working
  • Constitutive Equations
  • Continuum Mechanics
  • Deformation (Mechanics)
  • Differential Equations
  • Engineering
  • Equations
  • Materials
  • Mechanical Properties
  • Mechanical Working
  • Mechanics
  • Modulus Of Elasticity
  • Plastic Properties
  • Stress Strain Relations
  • Stresses

Readers

  • Linear Algebra
  • Materials Science (Mechanical Engineering).
  • Materials Science and Engineering.