平面有限元单元网格自动生成

Automatic Generation of Grids For Two Dimensional Finite Elements Problems

本文通过对平面三角形单元、四边形单元节点信息及单元定义的分析，用C语言编制了能自动生成平面三节点三角形单元，四节点、八节点四边形单元的有限元问题的前处理程序FEMPRE2D．C．通过使用FEMPRE2D．C程序可大大节省数据录入人员的工作量，减少准备数据的时间，并能消除录入数据时可能发生的错误，从而为正确解决工程问题提供可靠的保证．

This paper presents an automatic generation method based upon the analysis of the definition and nodes information of the two dimensional elements. This method applies to the triangle element with three nodes, the quadrilateral element with four nodes and eight nodes. The results show that this method greatly lessens the data-input work load thus quickens the data preparatory stage, and eliminates the possible data entry error thus guardian-tees the correctness of the solution of engineering problems.