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Improved stress intensity factor solutions for surface and corner cracks at a hole

Par Conseil national de recherches du Canada

DOITrouver le DOI : https://doi.org/10.2514/6.2012-1700
AuteurRechercher : 1; Rechercher : 1; Rechercher : 1
Affiliation
  1. Conseil national de recherches du Canada. Aérospatiale
FormatTexte, Article
Conférence53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference 2012, April 23-26 2012, Honolulu, HI
Sujetcorner cracks; correction approaches; modeling and analysis; semi-elliptical crack; surface cracks; thickness direction; three dimensional finite elements; uniaxial tensile loading; finite element method; stress intensity factors; structural dynamics; surface defects; cracks
Résumé
Detailed three-dimensional finite element (FE) modeling and analysis of quarter-elliptical and semi-elliptical cracks at a hole were carried out. Comparison cases showed that the accuracy of the classical Newman-Raju closed-form stress intensity factor solutions can be improved, especially for the surface crack case and in the thickness direction for the corner crack case. Using the developed FE models, improved stress intensity factor solutions for quarter-circular and semi-circular cracks at a hole were obtained for uniaxial tensile loading. A simple correction approach is also proposed to improve the accuracy of the Newman-Raju solutions for more general cases of quarter-elliptical and semi-elliptical cracks at a hole.
Date de publication
Maison d’éditionAmerican Institute of Aeronautics and Astronautics
Dans
  • 53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference 2012.
Série
  • A Collection of Technical Papers on ....
Langueanglais
Publications évaluées par des pairsOui
Numéro NPARC21269382
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Identificateur de l’enregistrement3cfdfc77-e7fb-4ebc-b2e9-6e6d7457e1c9
Enregistrement créé2013-12-12
Enregistrement modifié2020-04-21
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