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1998
Journal Article
Titel
Stress intensity factors for internal circumferential cracks in thin- and thick-walled cylinders
Abstract
The paper addresses the calculation of mode I stress intensity factors for complete circumferential cracks on the inner surface of a hollow cylinder subjected to axisymmetrical loading. The analysis based on the weight function method involves two reference sets of data. These are the stress intensity factor and the crack mouth opening displacement for a crack under uniform loading. Boundary-element computations are performed in order to extend the reference data available in the literature to include the cases of thin-walled cylinders and deep cracks. The accuracy of the derived weight function is verified by comparing stress intensity factors for several kinds of radially varied loading to corresponding numerical results obtained using the boundary-element technique. For the majority of geometries, the relative error in calculating the stress intensity factor is found to be within 3 per cent.