参数化模型到直接建模的模型转换方法

中国机械工程

参数化模型到直接建模的模型转换方法

陆鹏;闫崇京;谷秋实

南京航空航天大学机电学院，南京,210016

出版日期:2017-04-25 发布日期:2017-04-25

Transformation Method from Parametric Modeling to Direct Modeling

LU Peng;YAN Chongjing;GU Qiushi

College of Mechanical and Electrical Engineering,Nanjing University of Aeronautics & Astronautics,Nanjing,210016

Online:2017-04-25 Published:2017-04-25

摘要/Abstract

摘要： 参数化建模和直接建模方法是当前主流的两种三维几何建模方法，两者在功能上有较强的互补性。为了实现两种模型之间的转换，更好地体现设计者的设计意图，提高设计效率，提出了基于曲面重构的转换方法。通过对参数化模型表面点集做Delaunay三角剖分，求解出模型表面几何方程，拟合重构出直接建模模型，并以包含特征信息的三角网格单元的跟踪标记和数据更新来实现直接建模操作。实验表明，该转换方法适用于大多数特征模型的转换，且具有较高的转换效率。

关键词: 参数化模型, 直接建模模型, 三角剖分, 网格标记

Abstract: Currently, parametric modeling and direct modeling were two main methods of 3D geometric modeling, these methods had strong complementary on the functions. In view of how to realize the conversion between them, to reflect designers' intentions better, and to improve design efficiency, a method was proposed herein based on surface reconstruction. In order to restructure the parameterized model, the method needed to do a Delaunay triangulation by the points from parameterized model surface, and the direct modeling operation was realized by tracking tag and data update of the triangular mesh elements which contained feature informations. Finally, experimental results show that the proposed method is suitable for most feature models with a high conversion efficiency.

Key words: parameterized model, direct modeling model, triangulation, grid mark

中图分类号:

TH164

陆鹏, 闫崇京, 谷秋实. 参数化模型到直接建模的模型转换方法[J]. 中国机械工程.

LU Peng, YAN Chongjing, GU Qiushi. Transformation Method from Parametric Modeling to Direct Modeling[J]. China Mechanical Engineering.

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