Comparison of stress intensity factors for cracks at countersunk holes

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Proceedings titleAIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
Conference47th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, May 1-4, 2006, Newport, Rhode Island
Pages685694; # of pages: 10
SubjectBending (deformation); Cracks; Finite element method; Mathematical models; Tensile testing; Countersunk holes; Knife edge hole; Straight-shank hole; Stress intensity factors
AbstractThis paper focuses on the study and comparison of stress intensity factor solutions for cracks emanating from countersunk holes in a plate subjected to remote tension and bending moments. To explore the difference in the crack behavior at a straight-shank and countersunk rivet hole, models of holes with different shapes at various ratios of countersunk depth to plate thickness were generated, in which there were two extreme cases of countersunk holes: knife edge hole and straight-shank hole. The stress intensity factor solutions for cracks at the countersunk holes were predicted using the FEM-BEM alternating technique. The FEM-BEM alternating method, which is described in this paper, was verified by carrying out a study of the stress intensity factor for a crack at a straight-shank hole. A range of crack shapes and sizes under remote tension and bending moments were analyzed. The results from the crack analyses revealed that the crack behavior is considerably different at the countersunk holes with different countersunk depths.
Publication date
AffiliationNRC Institute for Aerospace Research; National Research Council Canada
Access conditionavailable
Peer reviewedYes
NRC numberSMPL-2006-0024
NPARC number8928274
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Record identifierdcfef4d2-9bd9-4131-ac64-c937a4e400f0
Record created2009-04-23
Record modified2016-05-09
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