Separating Data and View: Support View-wandering Between Different Trades during Engineering Design

Based on the analysis of the two forms during collaboration of engineering design, which are named as time collaboration and space collaboration, the paper introduces a TDM (total data model) centered framework to support both time and space collaboration of hybrid CAD applications. By separating data and view the framework supports designers' view-wandering between different trades so that they can adjust their behavior to avoid space conflict. The maintenance of time consistency is achieved by utilizing AST (address space transformation) algorithm, and in order to adapt AST to the new large-scale design environment, an effective garbage collection strategy is introduced. We have developed a prototype system to prove the validity, efficiency, feasibility of our framework and experiments result gives a clue of good prospect both for theory research and practical application.