含设计意图的3D模型在异构CAD系统间实时交互的研究

hrough analyzing modeling methods and extracting their commonness of popular commercial 3D CAD, this paper frames a novel definition of exchanging 3D model data with design intents among different 3D CAD systems. The framework of describing 3D model format is hierarchical, so it is suitable for the XML expressions and real-time transmission through Web. The studies of this paper focus only on the data representations of volume feature (namely form feature). These representations include the total content of a sketch, creating manners of a feature and inter-combinations between features for a part model. Additionally, this paper also introduces how to insure the coherence of model data when different CAD systems are in collaborative work.