抄録
We have examined, in a previous research, how the quality of a finite-element solution depends on the method of connection from a fine mesh region to another region to be twice as coarse, in a case of plane strain and a use of the four-node quadrilateral element. In this paper, above discussion is extended to a case using degenerated solid element. Three processing manners of the transition region of the mesh density are discussed. Namely, 1) a primitive meshing which filled up the quadrilateral elements with trapezoidal shape in the transition region; 2) a jointing manner such as a large element and two small elements are connected directly with compatible condition of inter-element displacement; 3) special elements having five-node are arranged for the region. Numerical examples show that a method using a five-node element having piecewise linear shape function and a primitive method provide good results, and direct joint method gives poor.
