A General Purpose Automatic Mesh Generation Using Shape Recognition Technique

Computers in Engineering, Proc. 1991 ASME Intl. Comp. Engrg. Conf. Expos., ASME, 1991

MESHING
RESEARCH
CORNER

Mechanical Engineering Research Laboratory
Hitachi, Ltd., lbaraki, Japan

Abstract
This paper proposes a new automatic mesh generation algorithm, in which an artificial intelligence technique is introduced to imitate the process of human thinking for generating meshes. In this paper, the word "mesh" is used in lieu of element used in Finite Element Method. This system satisfies the user requirement that a geometric model should be divided into only quadrilteral meshes such that distortions are relatively small. The shape of a geometric model is recognized to provide the system with the ability to generate meshes for an arbitrary shape, and the ambiguity contained in the shape recognition is expressed by the membership function used in Fuzzy Logic. The algorithm for two dimensional automatic mesh generation is described and the application of this algorithm to a surface model is presented in this paper.