基于CGAL的单箱单室梁三维网格自动划分软件开发

以VS C＋＋为平台,利用CGAL（计算几何算法库）中Delaunay三角形网格划分功能,首先对单箱单室梁的一个横截面进行Delaunay三角形网格的划分;然后沿箱梁纵向一定距离新生成一个单箱单室截面,并采用映射点的原理,将已划分好Delaunay三角形网格的单箱单室截面上的节点,映射到新生成的单箱单室截面上形成新节点,并按已划分好Delaunay三角形网格的截面上节点的连接方式进行连接,即形成对新截面的Delaunay三角形网格划分;最后再将各个截面上相同编号的节点连接起来,实现以五面体六节点为基础的三维实体网格划分。为三维实体有限元软件开发提供一种有效的三维实体网格划分方法。

Development CGAL-based Single Box Single Room-type Bridge Three-dimensional Automatic Mesh Partitioning Software

Based on vc ＋＋ platform, using CGAL （Computational Geometry Algorithm Library） providing Delaunay triangulation meshing capability,firstly meshing a single box single room section by the Delaunay triangle, secondly creating a new single box single room section along the longitudinal box beam and using the mapping principle of node, mapping the nodes having been meshed of the single box single room section to a new one, connecting corresponding points and forming a new meshing section by the Delaunay triangle, Finally connecting the same number of nodes on each section and forming a five- sided six node-based three-dimensional solid meshing, providing aneffective three-dimensional solid meshing method for the development three-dimensional solid finite element software.