正則化された境界積分方程式に基づくラプラス変換境界要素法による動的応力拡大係数の解析

抄録

This paper presents a computational method of dynamic stress intensity factors(DSIF) in two-dimensional problems. In order to obtain accurate numerical results of DSIF, the boundary element method using the Laplace transform based on regularized boundary integral equations is applied to the computation of transient elastodynamic responses. A computer program id newly developed for two-dimensional elastodynamics. Numerical computation is carried out for computation of DSIF for a rectangular plate with a center crack under impact tension. Accuracy of the results is investigated from the viewpoint of computational conditions such as the sampling number of the inverse Laplace transform and the number of boundary elements.