202 初期ひずみを利用した刃状転位の有限要素モデル(GS05 FEM・MD)

Abstract

One of the authors proposed a finite element model of an edge dislocation before, based on the mathematical model by the use of a dislocation of displacement. But, this model needs to rearrange the stiffness matrix for connecting nodal points. Now, we propose a new finite element model of a dislocation by initial strain which doesn't need to rearrange the stiffness matrix. Examples for analysis are an edge dislocation in an infinite region and one neighboring a free boundary. In these analysis, stress fields around the dislocation are calculated by FEM and compared with the analytical results. From the results, it is shown that the new model of dislocation is satisfactory enough to anlyze the dislocation problem by usual FEM program.