基于Auto CAD AME的规则二次曲面壳的全四边形网格自动剖分

All quadrilateral mesh automatic generation for regular quadric surfaces based on Auto CAD AME

利用ＡｕｔｏＣＡＤ的高级造型扩展ＡＭＥ建立二次曲面及其相交模型；自动提取二次曲面的标准参数信息及曲面的交线信息，自动形成二次曲面壳块的等参面．该方法消除了网格剖分时曲面上极点处可能出现的奇异性，实现了二次曲面及其组合曲面上的全四边形网格剖分，并可按网格划分的密度要求实现网格的疏密过渡．

Quadric surfaces or their intersection models are built by using Advanced Modeling Extension (AME) of Auto CAD. The information of lines of intersection of surfaces are drawn automatically and the isoparametric area is built automatically. This method dispels the singularity properly occurring at the poles of surfaces when meshing it, realizes the all quadrilateral meshing on quadric surfaces, and realizes the generation graded meshed.