基于特征的实体造型数据结构

从特征设计的角度分析了实体造型的不足，在吸收相关工作优点的基础上，提出基于特征的实体造型数据结构．其中包括引入非流形表示，增加连接边和连接点，尤其是扩展边的内涵，引伸出多点边，使实体造型与特征造型有机结合，向符合工程设计需要的产品模型方向转化．

The Feature-based Solid Modeling Data Structure

in this paper, some weakness of solid modeling is indicated from the point of view of feature design. By taking advantage of the existing feature modeling techniques, a single non-manifold data structure is proposed which contains joint-edge and joint-vertex, especially multipoint-edge. The solid modeling is combined with feature modeling, thus being changed into product modeling to meet the needs of engineering design.