STRESS INTENSITY FACTOR FOR A STRAIGHT CRACK APPROACHING A HOLE.

Abstract

Stress intensity factor for a straight crack in an idealized stringer reinforced panel subjected to uniaxial tension is determined by the use of finite element analysis. Crack opening displacements which are obtained directly by the direct stiffness method are used to compute the stress intensity factor. The influence of a rivet hole which is ahead of an advancing crack, on the stress intensity factor is studied for three ratios of stringer rigidity to panel rigidity. Also discussed are the changes in stress intensity factors and strain energy release rates as the crack penetrates through the rivet hole and reappears on the other side of the hole. An energy release criterion is proposed for estimating the arrest capability of the rivet hole. (Author)

Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1969
Accession Number
AD0700277

Entities

People

  • Albert S. Kobayashi
  • D. E. Maiden

Organizations

  • University of Washington

Tags

DTIC Thesaurus Topics

  • Displacement
  • Finite Element Analysis
  • Intensity
  • Mechanical Properties
  • Physical Properties
  • Rigidity
  • Stress Intensity Factors
  • Stresses

Fields of Study

  • Engineering

Readers

  • Materials Science (Mechanical Engineering).
  • Structural Dynamics.