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Stress intensity factors for cracked T-sections and dynamic behaviour of T-beams

Authors
Journal
Engineering Fracture Mechanics
0013-7944
Publisher
Elsevier
Publication Date
Volume
73
Issue
1
Identifiers
DOI: 10.1016/j.engfracmech.2005.06.003
Keywords
  • Fracture Mechanics
  • Line Spring Model
  • Stress Intensity Factor
  • Dynamic Stiffness Matrix
  • T-Beams

Abstract

Abstract This paper presents an extension of a simple and convenient method proposed by Kienzler and Herrmann [An elementary theory of defective beams. Acta Mech 1986;62:37–46] to estimate the stress intensity factors of cracked beams and bars. This method is based on an elementary beam theory estimation of the strain energy release as the crack is widened into a fracture band. As an extension, the power of the simple beam theory analysis is demonstrated by application to cracked T-beams subjected to a bending moment, shear forces and a torsion. Moreover, the present work addresses the coupled bending-torsional vibration of cracked T-beams within the context of the dynamic stiffness matrix method of analysing structures.

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