Comparison of Boundary Correction Factor Solutions for Two Symmetric Cracks in a Straight-Shank Hole

Abstract

This report compares the mode 1 boundary correction factor solutions for two symmetric elliptical cracks emanating from a straight-shank hole. A variety of methods were used to generate the solutions. A global-intermediate-local (GIL) hierarchical approach was developed using the finite element method (FEM). Comparisons were made with the following methods: the FEM with the equivalent domain integral, semiempirical boundary correction factor equations, the finite element alternating method, the boundary element method with the crack opening displacement approach, the boundary element method using special crack-tip elements, and the three-dimensional weight function method. The boundary correction factor solutions were within a band of +/- 3% of the average solution.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1999
Accession Number
ADA363930

Entities

People

  • John G. Bakuckas Jr

Organizations

  • Federal Aviation Administration

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aircrafts
  • Boundaries
  • Boundary Element Methods
  • Computational Science
  • Crack Tips
  • Finite Element Analysis
  • Fracture (Mechanics)
  • Fuselages
  • Geometry
  • J Integrals
  • Mechanics
  • South Carolina
  • Stress Intensity Factors
  • Stresses
  • Three Dimensional
  • United States
  • United States Government

Readers

  • Computational Modeling and Simulation
  • Fluid Dynamics.
  • Materials Science (Mechanical Engineering).