Abstract
The Boundary Element Method combined with Bueckner singular fields is extended to the analysis of cracks having strip yield zones. It is shown that the length of the strip yield zone can be determined accurately and economically for all applied stress levels from a single boundary element analysis. By using the derived strip yield zone length the determination of the crack tip opening displacement reduces to a non-singular boundary element analysis. Strip yield zone lengths and crack opening displacements determined by the method are shown to be in agreement with a known accurate solution. The application of the new method is illustrated by considering a single crack at a circular hole for which new strip yield zones and crack opening displacements are obtained.
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