摘要
基于特征的设计是一种基于特征的 CAD系统的实现方法 ,它使设计者直接使用设计特征进行产品建模 ,而在基于特征的 CAD系统中特征的描述和修改是两个重要的问题。本文在分析了特征模型的描述、特征间的相互关系的基础上 ,开发了一个基于特征设计的原型系统 ,其特点是 :( 1)用特征关系图全面描述特征间的关系 ;( 2 )用基于可回退欧拉操作的造型历史树描述造型过程 。
Feature based design is the way to feature based CAD system. Designers can use design features to model the product. Description and modification of features are two important problems in the CAD system. Based on analyzing description of feature model and relationship among features, a prototype design system based on feature has been studied. It possesses characteristics as follows:(1) to describe the relationship among features completely with the chart of feature relationship; (2) to describe modeling process with model history tree based on undo Euler operation to carry out partial modification on features.
出处
《机械科学与技术》
CSCD
北大核心
2000年第4期627-630,共4页
Mechanical Science and Technology for Aerospace Engineering
关键词
特征关系图
CSG树
欧拉操作
CAD
特征
Feature based design
The chart of feature relationship
CSG tree
Euler operation
