A Strain-Based Formulation for the Coupled Viscoelastic/Damage Behavior.

Abstract

A strain-based thermodynamics framework is proposed for modeling the continuum damage behavior of viscoelastic materials. Damage is represented by an internal state variable in the form of a symmetric second rank tensor. The effect of damage on the constitutive behavior is introduced through direct coupling between the damage variable and the viscoelastic internal state variables. This approach accounts for time-dependent damage as well as damage-induced changes in material symmetry. Also, damage evolution is modeled by employing the concept of damage surfaces.

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Document Details

Document Type
Technical Report
Publication Date
Jul 07, 1997
Accession Number
ADA333430

Entities

People

  • Khaled Abdel-tawab
  • Y.j. Weltsman

Organizations

  • University of Tennessee

Tags

Communities of Interest

  • Energy and Power Technologies
  • Space

DTIC Thesaurus Topics

  • Abstracts
  • Composite Materials
  • Constitutive Equations
  • Couplings
  • Differential Equations
  • Energy
  • Engineering
  • Equations
  • Fracture (Mechanics)
  • Materials
  • Mechanics
  • New York
  • Personal Information Managers
  • Symmetry
  • Temperature Gradients
  • Thermodynamic Processes
  • Thermodynamics

Readers

  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Mechanical Engineering/Mechanics of Materials.