摘要
某给定区域的四边形网格被一给定直线切割后，有的四边形被切割成非四边形，舍去直线一侧的网格而保留直线另一侧的网格，为使有限元计算能继续进行下去，必须对保留的部分中靠直线附近的作局部调整。本文首次分析了四边形网格被直线切割的各种几何特征，并针对每种几何特征给出了相应处理办法，编制了程序。数值例子证明本算法是可靠实用的。
When quadrilateral meshes in a region are cutted by a given line,some quadrilateral meshes become non quadrilateral meshes.The meshes on one side of the line are deleted and the meshes on another side of the line are retained.In order to continue the finite element calculations,the retained meshes near the line must be adjusted locally.For the first time ,this paper analyses all geometric characterices for the quadrilateral meshes cutted by a line.Treatment methods relevant to each geometric characterices are given.programs are given,numerical examples are given to test the validity and reliability of the algoritm.
出处
《长春光学精密机械学院学报》
1998年第2期20-24,共5页
Journal of Changchun Institute of Optics and Fine Mechanics
