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本文在分析三维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。
On the basis of analyzing the data structure of 3D STL file format, this paper analyzes the advantages of establishing topology structure and proposes a method to establish the topology structure, and establishes a fast optimized hierarchical algorithm, which greatly improves the accuracy of 3D finite difference mesh automatic casting The speed and efficiency of the subdivision, developed a three-dimensional mesh subdivision program that can be applied to any complex casting body, and proved the practicality of the program through practical application.