Abstract
Stress intensity factors in an infinite medium split by rectilinear and circumferential cracks are investigated. Basic solutions for a single rectilinear or a single circumferential crack contained in an infinite medium are first presented. By making use of these basic solutions, stress intensity factors for an infinite medium containing both rectilinear and circumferential cracks are determined, with the use of equivalence procedures based on the alternating method. Numerical values of the stress intensity factors are presented in tabular form for a number of particular cases of practical interest. The validity and convergence of the solution method, and other aspects of the investigation, are discussed. In addition, it is found that the fundamental problem of an infinite medium weakened by a circular hole in the plane problem of elasticity can be regarded as a special case of an infinite medium having a circumferential crack, when the crack contains an angle of 2π.
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