Study of method for full hexahedral grid meshing based on FEM elastic deform operation
Received:October 20, 2009  Revised:August 01, 2010
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DOI:10.7511/jslx201102014
KeyWord:FEM  hexahedral grid  meshing method  smoothing algorithm  shaft ingate
     
AuthorInstitution
邹静 北京科技大学 土木与环境学院,北京
纪洪广 北京科技大学 土木与环境学院,北京
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Abstract:
      A new simple method for hexahedral mesh generation is proposed based on the mapping method and authors’ experiences on FEM meshing. Firstly, the initial grid is selected according to the contour of the body. Secondly, this grid is forced to deform so that all surface nodes can reach the destination surfaces, and then, the locations of the internal nodes are determined by FEM calculations under elasticity condition. Finally, after checking the quality of all elements, the target grid can be constructed by adjusting distorted elements. In order to validate the proposed technique, a full hexahedral grid is built for a complex shaft ingate model. The feasibility of the present method is fully proved.