Development of full automatic mesh generator and its graphic user interface for two dimensional adaptive finite element analysis

摘要

The discretization of a whole domain is a prerequisite for FEM. Since manual mesh generation is a tedious process, the mesh generation scheme has been studied in recent years. In iterative analyses, the geometry of the domain is drasticallychanged during iterations. It is known that mesh regeneration eliminates mesh distortion caused by geometry changes, which exerts unfavorable effects on the convergence of the whole analysis. If error control of the analysis is additinally considered,such a process should be adaptive; adaptive remeshing is required for a reliable solution. There exist numerous mesh generators on the market, however, most of them are based on an interactive procedure with a user, thus they cannot be used for theadaptive remeshing process. In this paper, a sophisticated mesh generation scheme for the adaptive remeshing process in 2D FEM and its graphic user interface are discussed in detail. After comparison with other schemes, it can be concluded that ourscheme is superior to the others in terms of flexibility and time complexity.