CAE技术在汽车产品开发中的应用.ppt

CAE技术在汽车产品开发中的应用 顾镭博士 徐有忠博士 奇瑞汽车公司 奇瑞乘用车工程研究院 Outline Vehicle Product Development Process Chery CAE Capabilities Safety CAE Application 汽车新产品开发典型流程 System Engineering Fundamental 车身减重（863项目） 奇瑞碰撞安全设计能力评估 碰撞安全设计标准 CAE is the primary tool for crash safety development and assessment CAE is used at every stage of safety design and development process CAE is essential for product cycle time reduction Safety Challenges More Stringent Safety Requirements New 208, IIHS Offset, IIHS Side, R/O, OOP Reduce feasible solution domain Increase of Advance Restraint System Adaptive Venting/Column/Load Limiter, Tether Bag, Dual Pyro, IKB, SIR, OCS….. Certification complexity Styling demands shorter front end Achieve Leadership w. min. weight, cost, and time Safety CAE Philosophy Prediction instead of correlation Model the physics correct will ensure good predictions Design for success instead of predict for failure (Design focus instead of Verification focus) Robustness Needs to be considered Deliver high quality safety while meeting ABS Safety CAE Trends Lead Design More involvement in defining architectural and upfront targeting process CAE is not equal to FEA Integrate all possible tools. Use the most effective tool at different stages More discipline CAE approaches (CAE QOS) Incorporate Opt/Robustness tool set Well-round safety background Improve predicting capability Safety Action Plan People Safety Engineering mindset Discipline in following CAE Quality Process Out-of-Box thinking Lead design mindset Process Safety CAE QOS Standardized Safety Development Process Establish Safety KBE Technology Resolve CAE Gaps Build Opt/Robustness Tool sets Process Integration toolset Development of Safety Feature Technology GapsStructure - 1 Rupture, Failure, separation Weld Body Mounts, Engine Mounts Magnesium IP, Magnesium Radiator Support Fastener LCA Frame Fuel pipe/fuel rail/fuel tank/sender unit Latch failure Other Material - Nylon insert, foam, Honeycomb Windshield Dela