Assumed Stress Hybrid Finite-Element Method for Fracture Mechanics and Elastic-Plastic Analysis,

Abstract

The purpose of the report is to investigate the reasibility of the assumed stess hybrid finite element method on the analysis of linear fracture mechanics and the elastic-plastic analysis. The hybrid stress model is applied for the evaluation of the elastic stress intensity factors at the tip of a sharp crack. Example solutions include plane stress cracks of both the opening type and the in-plane shear type for isotropic materials and of the opening type for anisotropic materials. Convergence of the numerical solution and the optimum arrangement of the finite element meshes have also been studied. The hybrid stress model is applied to the determination of the static response for structures with elastic-plastic material behaviors. (Author Modified Abstract)

Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1972
Accession Number
AD0757523

Entities

People

  • Chih-hung Luk

Organizations

  • Massachusetts Institute of Technology

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Abstracts
  • Continuum Mechanics
  • Convergence
  • Finite Element Analysis
  • Fracture (Mechanics)
  • Intensity
  • Materials
  • Mechanics
  • Physics
  • Stress Intensity Factors
  • Stresses
  • Test And Evaluation

Fields of Study

  • Engineering

Readers

  • Approximation Theory.
  • Materials Science (Mechanical Engineering).
  • Structural Health Monitoring of Composite Structures.