Virtual Crack Extension Technique

Abstract

In order to numerically calculate the strain energy release rate (SERR) using finite element models, an implementation of the virtual crack extension technique was developed within a Matlab script. From the nodal data read in from the ascii output files produced by LS-Dyna, the SERR was calculated from contours of elements which were positioned around the crack tip. In order to validate the implementation, a mesh sensitivity study of a center cracked panel was carried out. This study concluded that the SERR implementation was relatively independent of mesh size and shape.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 2008
Accession Number
AD1003973

Entities

People

  • Khaled Shahin
  • Tamunoiyala Koko

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Classification
  • Continuum Mechanics
  • Contracts
  • Crack Tips
  • Cracks
  • Engineering
  • Fracture (Mechanics)
  • J Integrals
  • Materials
  • Mechanics
  • Modulus Of Elasticity
  • Nova Scotia
  • Security
  • Shear Modulus
  • Stress Intensity Factors
  • Stresses
  • Two Dimensional

Readers

  • Computational Fluid Dynamics (CFD)
  • Computer Science/Computer Engineering/Data Science/Digital Signal Processing.
  • Materials Science (Mechanical Engineering).