A Study on the Preprocessing for Finite Element Analysis of 3-Dimensional Structures.(With Focus on Geometric Modelling)

3차원 구조물의 유한요소해석 전처리에 관한 연구(기하학적 모델링을 중심으로)

This paper introduces a geometric modelling system adopted in a newly developed preprocessor for finite element analysis of three dimensional structures. The formulation is characterized by hierarchical construction of structural model which consists of control points, curves, surfaces and solids. Various surface and solid modeling schemes based on blending functions and boundary representation are systematized for finite element mesh generation. The modeling system is integrated with model synthesis and operations which facilitate modelling of complex structures.