Transactions of Materials and Heat Treatment

Title：Analysis on stamping and springback of hot rolled thick plate

Authors： Zhou Hailong Zhang Yaqi Mu Chuankun Wang Bin Mao An Ruan Yingyan

Unit： Technical Center of Dongfeng Motor Corporation

KeyWords： hot rolled thick plate stamping forming springback primary and secondary strain Autoform Dynaform MARC

ClassificationCode：TG386.1

year,vol(issue):pagenumber：2017,42(9):51-55

Abstract：

For the certain differences of mechanical properties, forming type and dimensional accuracy between hot rolled thick and thin blank and difficulties in accurate simulation on the forming and springback of thick plate by common sheet stamping analysis software, the forming characteristics and springback of the vehicle longitudinal beam were analyzed and compared by Autoform, Dynaform and MARC, and the software which is more suitable for thick plate simulation analysis was selected. Firstly, thick plate forming characteristics and the differences were analyzed by the three kinds of software. Secondly, their longitudinal beam simulation results were analyzed and compared respectively. In order to obtain true and authentic measured values, base circle on sheet metal before forming was drawn by the laser, then the primary and secondary strain was determined based on the changing size of base circle. Finally, the corresponding section and check points were selected, the springback and thickness change were measured, and their results were compared by three kinds of software. The results show that the thickness and primary and secondary strain analysis can be obtained precisely by the physical unit of software MARC, and the springback can be gained more precisely by software Dynaform. However, the springbacks deviated from the measured values largely by software MARC and Autoform.

Funds：

周海龙（1989-），男，学士，高级工程师 E-mail：zhl6541234@163.com

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