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

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DOIResolve DOI: http://doi.org/10.2514/6.2012-1700
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TypeArticle
Proceedings title53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference 2012
Series titleA collection of technical papers
Conference53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference 2012, April 23-26 2012, Honolulu, HI
ISSN0273-4508
ISBN9781600869372
SubjectCorner 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
AbstractDetailed 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.
Publication date
PublisherAmerican Institute of Aeronautics and Astronautics
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); Aerospace
Peer reviewedYes
NPARC number21269382
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Record identifier3cfdfc77-e7fb-4ebc-b2e9-6e6d7457e1c9
Record created2013-12-12
Record modified2016-05-09
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