首页 | 本学科首页   官方微博 | 高级检索  
     

参数化特征造型中拓扑结构变异的一种解决方法
引用本文:刘雄伟,郑海波,屠晓明.参数化特征造型中拓扑结构变异的一种解决方法[J].计算机辅助设计与图形学学报,2001,13(3):267-270.
作者姓名:刘雄伟  郑海波  屠晓明
作者单位:华侨大学先进制造技术研究所
基金项目:福建省自然科学基金! ( E9910 0 2 2 )
摘    要:文中首先分析了基于边界表示的特征模型用于参数化特征变动设计所存在的问题,指出了以边界表示中的几何边为形状特征定位约束基准无法满足拓拟结构变异的局限性,分析了基于草图的特征造型方法在变动设计中的重要性。在此基础上,提出了将基于实体模型边界表示的特征模型与基于草图的特征模型结合起来的新思想,并给出了该思想的实现方法,该方法使特征定位基准在特征造型过程中保持不变,且不随特征定位约束参数的改变而变化,能很好地满足参数化变动设计与拓扑结构变异的要求。

关 键 词:变动设计  拓扑结构  特征造型  参数化设计  CAD
修稿时间:1999年11月23

Solution to Topological Variation in Parametric Feature Modeling
LIU Xiong,Wei,ZHENG Hai,Bo,TU Xiao,Ming.Solution to Topological Variation in Parametric Feature Modeling[J].Journal of Computer-Aided Design & Computer Graphics,2001,13(3):267-270.
Authors:LIU Xiong  Wei  ZHENG Hai  Bo  TU Xiao  Ming
Abstract:The B Rep based feature model is not suitable for feature editing which leads to topological variations. The authors point out that using the geometric edge in the B Rep as the location base of form feature is unsatisfied with topological variation after a case study. This paper presents the sketch based designing procedure for parametric feature modeling and illustrates the importance for feature variational design. For the implementation, the authors present a new method which combines the B Rep based feature model and the sketch based feature model together in the designing procedure. This method keeps the location base of form feature invariance during the feature modeling and editing, and it is suitable for feature parametric variational design and topological variation.
Keywords:variational design  topological structure  feature modeling  parametric design
本文献已被 CNKI 维普 万方数据 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号