Energy Release Rate Calculations for Interface Edge Cracks Based on a Conservation Integral.

Abstract

A certain conservation integral, the so called M-integral, recently exploited by L. B. Freund in the calculation of stress intensity factors for cracks in homogeneous elastic media, is applied to the calculation of energy release rates for interface edge cracks. Specifically, for an edge crack along the interface between two elastic wedges of different opening angles and dissimilar elastic properties, and that is subjected to point loads at the apex, a relation is derived among the length of the crack, the energy release rate of the crack, the applied loads, the wedge angles and the material parameters. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1979
Accession Number
ADA079723

Entities

People

  • A. Nachman
  • J. R. Walton

Organizations

  • University of Wisconsin–Madison

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Air Force
  • Boundaries
  • Boundary Value Problems
  • Composite Materials
  • Contracts
  • Elastic Properties
  • Equations
  • Integrals
  • Intensity
  • Materials
  • Mathematics
  • Mechanics
  • North Carolina
  • Numbers
  • Stress Intensity Factors
  • Two Dimensional
  • United States

Readers

  • Aerodynamics/Aeronautics.
  • Materials Science (Mechanical Engineering).
  • Theoretical Analysis.