複数個の外周環状き裂を有する丸棒のねじりにおける干渉効果

概要

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In a solid with many cracks, the stress field is affected by the mutual interface of cracks. In the present paper, to investigate the interaction of many cracks, the torsional stress state of a cylindrical rod with three parallel ring-shaped edge cracks is considered on the basis of the theory of elasticity. The radius of the central crack in different from those of the others. Numerical results are illustrated for the distributions of displacements and shear stresses and for the variations of the stress intensity factors with distance between cracks and with the sizes of the cracks. The stress intensity factors in the deep cracks are larger than those in shallow ones. The maximum stress intensity factor in a cylindrical rod with three cracks increases with increasing distance between cracks, and approaches that in the case of a single crack.
社団法人日本機械学会の論文
1992-06-25