209 3次元曲面メッシュ生成システムの開発

概要

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We are developing a new system GENNET to divide automatically into mesh of nearly equilateral triangular elements in surface model represented as a parametric curved surface. This system can be used for finite element analysis of shell constructions, boundary element analysis of solid models, optical molding, landform analysis or computer graphics. Input data for the system are the specification of curved surface with its boundary and mesh size. The types of surface to be devided are plane, sphere, conic surface, hyperbolic paraboloid, torus surface and free curved surface. User can add the functions to define other types of parametric surfaces into this system. The basic idea of the algorithm is the mapping of mesh on 2D parameter plane onto 3D curved surface. The topology of nodes, edges and elements is described on the two-dimensional plane. Distance and angle are measured on the three-dimensional surface. An example of generated mesh is illustrated.
一般社団法人日本機械学会の論文
2001-09-20