任意分布力を受ける表面き裂の応力拡大係数の解析 : 第4報,影響係数データベースの応力集中部材への応用

概要

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The authors have developed an influence function method by which the stress intensity factor, K, for surface cracks can be analyzed easily for arbitrarily distributed surface stresses. The data of the influence coefficients. K_<ij>, have been obtained for a semielliptical or a quarter-elliptical surface crack in a flat plate and for a semielliptical surface crack in a round bar. In this paper, the authors have shown how these data can be applied to the analysis of K for a surface crack originating at the stress-concentrated portions such as notch roots, welding joints and circular holes. It has been found that the proposed estimation scheme gives approximate values of K at most 10% higher than the exact values.これまでに求めた平板中および丸棒中の表面き裂の影響係数Kijデータベースを用いると切欠き，溶接継手等応力集中部に生じた表面き裂のＫ値が容易に，精度良く求められることを示した．
社団法人日本機械学会の論文
1987-08-25