Implementation of a Unified Constitutive Model into the PAFEC Finite Element Package.

Abstract

A unified constitutive material model was implemented in to the PAFEC Finite Element Package Level 8.1. The modifications allow the PAFEC Package to perform time dependent plasticity. This includes the calculation of the updated material Jacobian used in the formulation of the global stiffness matrix. Automated time stepping, reduced storage requirements and structural convergence features were also included in the code. A series of test analyses addressing different aspects such as element types and loading conditions were performed and shown to agree with expected results.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1997
Accession Number
ADA327751

Entities

People

  • J. Paul

Organizations

  • Defence Science and Technology Group

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Aircrafts
  • Airframes
  • Constitutive Equations
  • Convergence
  • Data Sets
  • Department Of Defense
  • Differential Equations
  • Engineering
  • Materials
  • Mechanical Engineering
  • Mechanics
  • Modulus Of Elasticity
  • Plastic Properties
  • Residual Stress
  • Stiffness
  • Three Dimensional
  • Two Dimensional

Fields of Study

  • Engineering

Readers

  • Computational Fluid Dynamics (CFD)
  • Computational Modeling and Simulation
  • Nanofabrication and Microfabrication.