An Incremental Form of the Single-Integral Nonlinear Viscoelastic Theory for Elastic-Plastic-Creep Finite Element Analysis,

Abstract

A single-integral nonlinear viscoelastic theory is cast into a generalized incremental form for use in predicting creep response of materials. The incremental creep constitutive model is tailored for use in an incremental finite element program wherein the equations of motion are integrated numerically step-by-step. Recursive relations for material memory parameters are developed which allow the retention of all past history prior to the current time step and require integration over the current time step only. The creep model parameters required in the theory are obtainable from a standard creep and recovery test. The incorporation of the model within an incremental elastic-plastic finite element formulation is outlined. (Author)

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1979
Accession Number
ADA072151

Entities

People

  • Duane R. Sanders
  • Walter E. Haisler

Organizations

  • Texas A&M University

Tags

Communities of Interest

  • C4I

DTIC Thesaurus Topics

  • Composite Materials
  • Computer Programs
  • Computers
  • Creep
  • Creep Tests
  • Engineering
  • Equations
  • Equations Of Motion
  • Finite Element Analysis
  • Hardening
  • Integral Equations
  • Materials
  • Mechanics
  • Polymer Matrix Composites
  • Stainless Steel
  • Strain Hardening
  • Strain Rate

Fields of Study

  • Engineering

Readers

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