応力拡大係数の境界要素解析のための新しいき裂要素

概要

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In this paper, new crack elements are proposed for fracture mechanics analysis of two-and three-dimensional elastostatics by the boundary element method (BEM). In the proposed crack elements, arbitrary singularities of the stress or the traction near the crack front can be taken into account, and also the behavior of displacements near the crack front can be simulated in a reasonable manner. Three different kinds of interpolation function are used for modelling of the element geometry and the traction and displacement-variations, so that the nodal points of the crack element are located at their regular positions. Application is made to the stress intensity factor computation of some typical surface crack problems. Some interesting features are revealed through comparison of the results obtained with other available solutions.
一般社団法人日本機械学会の論文
1987-07-25