Transactions of Materials and Heat Treatment

Title：Simulation and engineering control method of springback for

Authors： Qiao Xiaoyong Cheng Aiguo Su Feiyu Yang Xue

Unit： Hunan University SAIC GM WULING Automobile Co. Ltd.

KeyWords： exterior panels springback surface distortion defects CAE engineering control method

ClassificationCode：TG386.41

year,vol(issue):pagenumber：2017,42(3):35-39

Abstract：

At present, the prediction accuracy of the cracking and wrinkle predicted by commercial stamping CAE analysis softwares can reach more than 90%. However, the prediction accuracy of springback remains low. Therefore, the influences of different setting conditions on the accuracy of springback simulation were analyzed, and the settings standard of stamping CAE springback and surface distortion were established. According to springback simulation accuracy of exterior panel, a springback and surface distortion control method was set up combining with the engineering knowledge base and CAE analysis. In this method, the stamping die face data of exterior panel was compensated springback according to the results of springback simulation and experience database. The compensation data was verified in simulation and the surface quality must be consistent with the original data in three aspects of Radius, Reflection and Section Analysis. The practice shows that this control method can predict and solve the problem of spring back and surface distortion for exterior panels effectively.

Funds：

国家重点研发计划(2016YFB0300400，2016YFB0300405)

乔晓勇（1981-），男，硕士，工程师

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