在分析三维ＳＴＬ文件格式数据结构的基础上,分析了建立拓扑结构的优点并提出了建立拓扑结构关系的方法

,并建立了快速优化分层算法,从而大大提高了铸件三维有限差分网格自动剖分的速度和效率,开发了能适用于任意

复杂铸件形体的三维网格剖分程序,通过实际应用证明了程序的实用性。-the analysis of 3D STL file format data structure on the basis of Analysis of the establishment of topological structure and the advantages of the establishment of relations between the topological structure, and the establishment of a rapid hierarchical optimization algorithm, thus greatly improving the casting 3D finite difference Automatic Mesh Generation for the speed and efficiency developed can be applied to arbitrary physical Castings complex 3D Mesh Generation procedures, through the practical application of the procedures to prove the practicality.