エネルギー法を用いた境界要素法による応力拡大係数の解析　　二次元き裂問題に対する適用

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  • Analysis of the stress intensity factor using the energy method combined with the boundary element method. (Application to two-dimensional crack problems).
  • エネルギーホウ オ モチイタ キョウカイ ヨウソホウ ニ ヨル オウリョク カ

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The energy method combined with the boundary element method is used to obtain the stress intensity factors of two-dimensional crack problems. The analyses are performed to examine the factors affecting the accuracy of solutions, that is, the method for crack extension, the value of crack extension and the type of element. It is shown from the analyses that the linear boundary element gives accurate solutions when the node at the crack tip is released by changing its boundary conditions. Then, the method proposed here is applied to center cracked plates subjected to tension and compact tension specimens to show the effectiveness of the present method.

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