Implementation of a Unified Constitutive Model into the ABAQUS Finite Element Package

Abstract

Unified constitutive models have previously been developed at AMRL and implemented into the PAFEC and ABAQUS Finite Element packages to predict the stress-strain response of structures that undergo multi-axial, rate dependent, cyclic plasticity. In this work, the ABAQUS version of the model has been enhanced to account for advances in unified constitutive modelling, and for consistency with the existing PAFEC version of the model. Numerous test cases have been run to validate the model's implementation in ABAQUS. A full 3-dimensional analysis of a proposed test specimen has been undertaken to study residual stress distribution with the ultimate goal of helping to manage fatigue crack growth in the F-111 aircraft.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1999
Accession Number
ADA371094

Entities

People

  • K. C. Watters
  • M. Heller
  • R. J. Wescott

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Air Force
  • Department Of Defense
  • Engineering
  • Engineers
  • Finite Element Analysis
  • Fracture (Mechanics)
  • Geometry
  • Materials
  • Mechanics
  • Numerical Analysis
  • Plastic Properties
  • Residual Stress
  • Shear Stresses
  • Stress Strain Relations
  • Stresses
  • Three Dimensional
  • Universities

Fields of Study

  • Engineering

Readers

  • Computational Modeling and Simulation
  • Structural Health Monitoring of Composite Structures.