Abstract
The indirect fictitious boundary integral method attacks three-dimensional flat notch problems. In this analysis, a new idea is introduced. That is, we set up one open fictitious-boundary surface between two neighboring real-boundary surfaces and distribute the simple- and the double-layer surface densities over it. As examples, stress concentration problems of a circular bar with a flat ellipsoidal cavity or a flat semielliptic annular groove under uniform tension are treated.
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