Abstract
In recent years, 3D-CAD systems have been rapidly improving. However, the principal improvements are focused on shape modeling and operability, so that it is still remained to be solved, how to handle the design information and intention generated within the design process. Our objective is to smoothly and broadly support the design process more by proposing an architecture to handle the design information and intention from the upstream design stage to the downstream process. Especially, it is important to analyze the design information which should be handled in the upstream design stage and to transmit this information accurately up to the detailed design stage where the geometries are decided. In this paper, the important information in the upstream design stage and the framework to handle these kinds of information is discussed.
