闭曲面有限元网格生成的边界预调整方法  

Boundary Pre-Adjustment Method for Finite-Element Mesh Generation of Closed Surface

作　　者：杜群贵[1] 刘胜[1] 黄晓东[1] 

机构地区：[1]华南理工大学汽车工程学院,广东广州510640

出　　处：《华南理工大学学报（自然科学版）》2007年第2期27-32,共6页Journal of South China University of Technology(Natural Science Edition)

基　　金：广东省科技计划攻关项目(2002A104040101);华南理工大学自然科学青年基金资助项目(B21-E505980)

摘　　要：为使闭曲面相对其参数域具有边界完整性,确保波前法(AFT)生成网格的可靠性,提出了以参/虚边界补充为特征的闭曲面边界预调整方法,将闭曲面分割为一系列开曲面片,进而利用AFT法使网格在各开曲面片上分区域同时生成.该方法可使基于AFT法的曲面网格生成算法直接用于各种形式的闭曲面.In order to guarantee an integrated boundary relationship between a closed surface and its parameter field, and to ensure the reliability of the advancing front technique （AFT） in mesh generation, a boundary pre-adjustment method of closed surface is developed, in which new edges related to the boundaries of the parameter field and the virtual boundaries inside the parameter field are formed and defined as the additional boundaries of the closed surface. As a result, the closed surface is divided into a series of slices with open surface. Therefore, meshes can be simultaneously generated via the AFT on each slice with open surface. The proposed method for boundary pre-adjustment makes the AFT suitable to the mesh generation of various closed surfaces.

关 键 词：有限元法 网格生成 波前法 闭曲面 边界调整 

分 类 号：TP391[自动化与计算机技术—计算机应用技术] U283.4[自动化与计算机技术—计算机科学与技术]