抄録
A three-dimensional solidification analysis of castings and its input data generation software are presented. The geometry to be analyzed is divided into elements such as pentahedrons and hexahedrons which have a nodal point in themselves. The heat balance equations for the elements are solved numerically. The input data for the analysis are generated interactively by the use of computer graphics. A method of predicting the shrinkage defect by a gradient of the permeability is proposed and some numerical examples are demonstrated. The calculated values agree with the experimental ones in most cases. A more precise prediction of the defect may require the consideration of flow phenomena and the heat transfer during pouring. The proposed method can be developed into such analyses.
