. 2007, 25(0704): 15-24.
The industry for complex products is important for national economy and national safety. Although tools like Computer Aided Design, Computer Aided Engineering and Computer Aided Optimization have been used successfully, and with prominent results, the design, engineering, optimization are mostly dealt with separately, and in this way, the data of complex product virtual prototype is difficult to be managed. Now PDM system can manage document, product structure, engineering change and workflow jointly, but it can not integrate CAX process（CAD modeling process, CAE simulation process, CAO optimization process）and CAX data（CAD digital model, CAE analysis result, CAO optimization project）. According to the features of complex product design, an integrated platform for collaborative design, simulation , optimization is proposed, which is useful in improving quality of complex products and reducing the cost.
