圧裂引張荷重を受ける中空円板中のき裂の応力拡大係数

概要

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Stress intensity factors for cracks emanating from a circular hole in a circular disk under diametral compression are analyzed by the body force method. The stress intensity factors K_1 for several cases of the ratio β of the inner to the outer radius and the ratio λ of crack length to the inner radius are numerically calculated. The main results are summarized as follows : (1) In the case of λ≦0.1, an approximate equation for K_1 on the basis of the maximum tensile stress at the edge of a hole is derived. (2) In the case of β≦0.3 and λβ≧0.1, K_1 can be estimated by the results of a circular disk containing a central crack without a hole. (3) With increasing β, K_1 approaches the results for the pure bending problem where the width is equal to the difference between the inner and the outer radius.
社団法人日本機械学会の論文
1986-08-25