体積力法による屈曲き裂・分岐き裂の新解析法

概要

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The body force method is one of the most powerful methods to analyze bent or branched cracks. In particular, a more accurate solution of the stress intensity factor can be obtained by applying the resultant force boundary condition (resultant force method). However, the crack displacement of bent or branced cracks cannot be obtained continuously by the resultant force method, and it is necessary to divide a crack into very small elements to achieve high accuracy. In this paper, we propose a new resultant force method to obtain continuous crack displacement of bent or branched cracks, which dramatically improves the accuracy of the solution. The effectiveness of this new method is illustrated by solving some typical crack problems. Moreover, simulation of crack propagation through grain boundaries is performed.
社団法人日本機械学会の論文
1993-11-25