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Knowledge‐Based Free Mesh Generation of Quadrilateral Elements in Two‐Dimensional Domains
Author(s) -
Zeng Young,
Cheng Gengdong
Publication year - 1993
Publication title -
computer‐aided civil and infrastructure engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.773
H-Index - 82
eISSN - 1467-8667
pISSN - 1093-9687
DOI - 10.1111/j.1467-8667.1993.tb00211.x
Subject(s) - quadrilateral , boundary (topology) , domain (mathematical analysis) , heuristic , computer science , inference , rule of inference , algorithm , theoretical computer science , mathematics , artificial intelligence , finite element method , structural engineering , engineering , mathematical analysis
A knowledge‐based system, FREEMESH, for free mesh generation of quadrilateral elements in general two‐dimensional structures, is introduced in this paper. Based on the recursive logic, a plane domain is firstly represented with boundary features, corresponding to which a group of heuristic rules is built up to generate quadrilaterals recursively. The niles include the initial design rules and the redesign rules. To facilitate the rule‐based inference, the geometric reasoning is turned to acquire domain boundary features. Examples show that this strategy is effective.