Design And Implementation Of The Finite Element Mesh Generation And Refinement Algorithm

This article is in the lab,"three-dimensional finite element analysis of thermal structure coupling system" project background, solid coupling for the three-dimensional finite element thermal analysis system meshing module, designed and implemented mesh generation and mesh refinement algorithm; for today finite element analysis technology overview, highlighting the3D mesh refinement sweep method and research status, summarize the3D swept France and mesh refinement algorithm According to three-dimensional finite element analysis of thermal structure coupling system meshing module needs analysis, given the system requirements analysis and design process, focusing on meshing sub-module, the module, the system interface and the interface to give a detailed design. Also on object-oriented programming and subsystem programming platforms were introduced.For a3D mesh generation algorithms swept France hexahedral mesh generation algorithm gives a detailed design. Elaborated Delaunay, AFT and mapping method algorithm, and highlight the sweep method and sweep method has the advantage and disadvantages of using hierarchical method of thought, and then carried out for each internal node generates and eventually internal node again re-positioning and handling the border issue. While the virtual decomposition problem is studied, can be decomposed into multiple complex boundary entities simple entities, and then swept meshing.Finite element mesh refinement algorithm for ordinary mesh refinement algorithm, modify and optimize their summed triangular meshes and quadrilateral mesh refinement algorithm is the core idea, from five refinement levels each given triangle mesh geometric grid and quadrilateral mesh refinement refinement and non-geometric mesh refinement algorithm implementation process and the process over to the mesh size and the detailed design, the mesh is refined from dense to sparse after in three-dimensional finite element analysis of thermal structure coupling the practical application of the system to improve the overall quality of the grid and get good results.In the end of this article summarizes the results and shortcomings, through the practical application of three dimensional finite element analysis of thermal structure coupling system meshing module plan works well, its divided mesh quality is excellent, able to meet the needs of users. And future research work has made a further outlook.