Stress-Intensity Factors Along Three-Dimensional Elliptical Crack Fronts.

Abstract

The objective of the present investigation is to determine the mode I stress-intensity factors along two symmetric surface cracks emanating from a centrally located hole in a rectangular plate (the so-called Round Robin Problem) using the domain integral method. In order to validate the present three-dimensional domain integral implementation, two comparisons were made with benchmark solutions. We first considered the problem of an elliptical crack embedded in a rectangular plate. For plate dimensions much greater than the largest characteristic dimension of the elliptical crack, we compared the present finite element results with the solution of Irwin (1962) for an elliptical crack embedded in an infinitely extended solid. Next, we considered the problem of a quarter-elliptical comer crack in a rectangular,plate and compared the results with those of Newman and Raju (1983). Excellent agreement was obtained for both benchmark comparisons.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1998
Accession Number
ADA353955

Entities

People

  • B. Moran
  • M. Gosz

Organizations

  • University of New Hampshire

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Applied Mechanics
  • Boundary Layer
  • Civil Engineering
  • Computational Fluid Dynamics
  • Core Storage
  • Crack Tips
  • Engineering
  • Finite Element Analysis
  • Geometry
  • Mechanical Engineering
  • Mechanics
  • Stress Intensity Factors
  • Stresses
  • Three Dimensional
  • Two Dimensional
  • United States
  • United States Government

Readers

  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Materials Science (Mechanical Engineering).