境界要素法による応力拡大係数の簡便計算法

概要

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The method that the present authors have recently proposed on using the finite element method has been incorporated into a boundary element method to analyse twodimensional elastostatic stress intensity factors. Namely, the present method is based on the expectation that the ratio of the resultant force around the crack tip in the theoretical value and the numerical one is constant. Numerical-emprical formulas for stress intensity factors of the mode I and II deformations are established from the results of stress analysis for the strips with central crack and the rectangular plates with contral inclined crack, respectively. The linear strain element has been used to the calculations of stress for the cracked plates. The usefulness of the method has been tested with a number of plates with crack, and the results have turned out to be fairly satisfactory.
社団法人日本機械学会の論文
1990-10-25