三维域四面体网格生成的推进网阵方法和网格光顺

On the一Advancing Front Approach for Tetrahedral; Mesh Generation and Smoothing Process

本文讨论了应用推进网阵方法在任意形状三维块体内的四面体元网格的生成过程，建议了这个过程中一个典型四面体元生成的一般方案，提出了一个简便的在三维非平面表面域上三角形网格的广义Ｌａｐｌａｃｉａｎ光顺方案和一个块体域内四面体元网格的光顺方案，给出的一些图形结果表明了所提出的网格生成器及其程序的功能和质量。本文工作已作为前处理机在英国有限元分析软件公司ＦＥＡＬｔｄ的通用有限元程序ＬＵＳＡＳ中实现。

This paper discusses a procedure of tetrahdr1 mesh generation using the advancing frontapproach in a volum e region with arbitrary shape and proposes a general scheme to generate atypical tetrahedral element in the procedure. A simple generalized Laplacian smoothing scheme fortriangular meshes on a 3D non-planar surface region and a smcothing sc heme for tetrahedralmeshes in a volume region are presented.Some graphic results are given to illustrate theperformance and capability of the present mesh generator and the implemented cede. The presentwork has been implemented as a pre-processor in the general purpose finite element packageLUSAS.