非多様体形状モデルを用いた形状特徴の表現と管理

概要

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This paper discusses representation, maintenance, and editing of form-features based on non-manifold geometric modeling. Form-features are very important to maintain meanings of partial shapes, but in conventional solid modeling, it is difficult to represent various forms of partial shapes and maintain them throughout design. These problems can be solved by using a non-manifold geometric modeling system. In our method, the system maintains topological structure that can represent any form-feature as a collection of topological entities. This is realized by subdividing a modeling space into sets of topological entities, and maintaining the relationships between embedded form-features and the topological entities. Form-features, resultant shapes and compound form-features can be extracted from the topological structure. In addition, editing operations based on this representation can cancel or modify form-features very quickly.
公益社団法人精密工学会の論文
1993-06-05