Use computer to perform product design and engineering analysis for complex engineered products, resolving key technical issues including efficient solid modeling, analysis-dependent geometric computing,design knowledge's effective expressions and processing.It aims to ultimately equip the CAD technology with the desired efficiency, robustness, integration and intelligence that engineering designers wishes in designing complex engineered products.Research focuses:high-performance solid modeling, simulation-driven design,virtual prototyping, design knowledge capturing and reusage, field-dependant professional CAD technologies and systems.