Boundary Elements for Debond Stress Analysis; Fracture Mechanics Stress Analysis.

Abstract

To understand and quantify debonding events in composite materials it is necessary to have accurate stress analysis in the area of stress concentrators. Boundary integral equation (BIE) techniques are proposed as a potentially more accurate approach than finite elements. In particular, the debond stress analysis of a rod being pulled out of a matrix material is considered. A model problem is posed consisting of an edge cracked bar under longitudinal shear deformation and a BIE formulation is proposed using a subtraction of singularity technique. An extensive review of integral equation approaches to various fracture mechanics problems is also presented, with suggested new solution techniques for unsymmetric crack configurations. Originator-supplied keywords include: Boundary integral equations, Boundary elements, Boundary element methods, Fracture mechanics, Stress singularities.

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Document Details

Document Type
Technical Report
Publication Date
Apr 26, 1983
Accession Number
ADA149827

Entities

People

  • C. Atkinson

Organizations

  • Imperial College London

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Air Force
  • Boundary Element Methods
  • Boundary Value Problems
  • Composite Materials
  • Computational Fluid Dynamics
  • Computational Science
  • Contour Integrals
  • Elastic Properties
  • Equations
  • Finite Element Analysis
  • Fracture (Mechanics)
  • Geometry
  • Integral Equations
  • Mechanics
  • Stress Strain Relations
  • Three Dimensional
  • Two Dimensional

Fields of Study

  • Engineering

Readers

  • Calculus or Mathematical Analysis
  • Structural Health Monitoring of Composite Structures.