基于STL文件的空间CAE模型自动识别

Identification of three-dimensional CAE model based on STL files

STL类型文件是目前CAD/CAM中广泛使用输入 /输出格式 ,它具有简单 ,适应性好等特点 ,基于此类文件通过分析、比较、归类、排除等方法识别其中所包含的表面几何及其拓扑信息 ,进一步通过欧拉定理确定各个表面所围成的实体信息 ,对下一步的空间模型的有限元分析具有重要意义 .

The STL file is currently widely used in CAD/CAM as an interchange format. The main advantages related to the use of this format depend on its “neutral” nature and adaptability. Identification of surface geometry and topology in three-dimensional CAE model based on STL files is performed by analysis, comparing, classifying and excluding methods. Furthermore, reconstruction of solid model resulting from the identification can be obtained by using Euler's theorem so as to get a suitable model for FEA analysis.