The strain-energy release rate is determined for an edge crack in a uniformly stressed bar of circular cross-section. Values of the strain-energy release rate, obtained using a finite-element representation of the bar and by measuring the compliance of the bar experimentally, are shown to be in close agreement. For crack depths of less than one-half diameter, the strain-energy release rates are found to be lower than existing results on rectangular bars having the same relative crack length.
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References
1.
CalderJ. W.Accident at Markam colliery1974 (Department of Energy, HMSO, Cmnd 5557)
2.
BushA. J.‘Experimentally determined stress intensity factors for single-edge-crack round bars loaded in bending’, Experimental Mechanics197616, 251–257.
3.
CannonD. F.AllanJ. R.‘The application of fracture mechanics to railway failures’, Railway Engineering Journal July1974 (Institution of Mechanical Engineers).
4.
WatwoodV. B.‘The finite element method for prediction of crack behaviour’, Nuclear Engng and Design196911, 323–332.
5.
DeveralL. L.LindseyG. H.‘A comparison of numerical methods for determining stress intensity factors’, J. Basic Engng197294, 508–509.
6.
AndersonG. P.RugglesV. L.StiborG. S.‘Use of finite element computer programmes in fracture mechanics’, Int. J. Fracture Mech.19717, 63–76.
7.
GrossB.SrawleyJ. E.BrownW. F.‘Stress intensity factors for a single edge notch tension specimen by boundary collocation of a stress function’, NASA TN D-23961964.
8.
SrawleyJ. E.JonesH.GrossB.‘Experimental determination of the dependence of crack extension force on the crack length for a single-edge-notch tension specimen’, NASA TN D-23961964.
9.
IrwinG. R.KiesJ. A.‘Critical energy rate analysis of fracture strength’, Welding Research Supplement1954.
10.
CartwrightD. J.RookeD. P.‘Evaluation of stress intensity factors’. Journal of Strain Analysis197510, 217–224.
