Mode I weight functions were derived for the deepest and surface points of an external radial-longitudinal semi-elliptical surface crack in a thick-walled cylinder with the ratio of the internal radius to wall thickness, Ri/t = 1.0. Coefficients of a general weight function were found using the method of two reference stress intensity factors for two independent stress distributions, and from properties of weight functions. Stress intensity factors calculated using the weight functions were compared to the finite element data for several different stress distributions and to the boundary element method results for the Lame´ hoop stress in an internally pressurized cylinder. A comparison to the ASME Pressure Vessel Code method for deriving stress intensity factors was also made. The derived weight functions enable simple calculations of stress intensity factors for complex stress distributions.
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February 1997
Research Papers
Weight Functions for an External Longitudinal Semi-Elliptical Surface Crack in a Thick-Walled Cylinder
A. Kiciak,
A. Kiciak
Department of Mechanical Engineering, University of Waterloo, Waterloo, Ontario, N2L 3G1 Canada
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G. Glinka,
G. Glinka
Department of Mechanical Engineering, University of Waterloo, Waterloo, Ontario, N2L 3G1 Canada
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D. J. Burns
D. J. Burns
Department of Mechanical Engineering, University of Waterloo, Waterloo, Ontario, N2L 3G1 Canada
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A. Kiciak
Department of Mechanical Engineering, University of Waterloo, Waterloo, Ontario, N2L 3G1 Canada
G. Glinka
Department of Mechanical Engineering, University of Waterloo, Waterloo, Ontario, N2L 3G1 Canada
D. J. Burns
Department of Mechanical Engineering, University of Waterloo, Waterloo, Ontario, N2L 3G1 Canada
J. Pressure Vessel Technol. Feb 1997, 119(1): 74-82 (9 pages)
Published Online: February 1, 1997
Article history
Received:
June 3, 1994
Revised:
September 16, 1996
Online:
February 11, 2008
Citation
Kiciak, A., Glinka, G., and Burns, D. J. (February 1, 1997). "Weight Functions for an External Longitudinal Semi-Elliptical Surface Crack in a Thick-Walled Cylinder." ASME. J. Pressure Vessel Technol. February 1997; 119(1): 74–82. https://doi.org/10.1115/1.2842270
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