结点连元法的一种改进算法

An Improved Algorithm of Node Connection Approach

针对Ｓ．Ｈ．Ｌｏ的非随机布点算法的缺陷，采用圆切除法对其改进，使得结点分布更为合理，并在此基础上给出一种有限元网格剖分算法—Ｗａｔｓｏｎ算法的改进算法．该算法实现简单，生成的单元质量好，适用于任意形状的平面域．

Larger blank regions will form after deleting inner nodes near the border in the nonrandom point - distributing algorithm of S. H. Lo. So some improvements by using circular cutting-off method are presented, by which the nodes distribution can be made more rational. Based on it, an improved algorithm of Node connection approach is proposed. Which can be easily realized and generate high quality elements. It is available for arbitrary plane regions.