Transactions of Materials and Heat Treatment

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ClassificationCode：V262.3+2

year,vol(issue):pagenumber：2019,44(4):57-63

Abstract：

Rubber forming is an important forming process for the manufacture of aircraft sheet metal parts. In order to improve the rubber forming efficiency of sheet metal parts, the springback problem in the rubber forming of concave curve flanging part was researched．Firstly，the tensile test of 2024-W aluminum alloy sheet in the new quenched state was carried out，and the material constitutive relations for springback compensation system and finite element simulation were provided. Then, the springback compensation was conducted by adopting the normal plane interception method based on CATIA secondary development, and the curved fillet and the flanging section curves in the normal plane were compensated to generate a new compensation profile. Finally, the compensated die was simulated by finite element software Pamstamp 2G. The results show that the springback angle decreases with the increasing of forming pressure. When the forming pressure is 60 MPa, the springback angle deviation before and after springback of part is within 1° which reaches the dimensional design requirements, and the feasibility of finite element simulation and the reliability of springback compensation system are verified.

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张凌云（1963-），男，博士，教授 E-mail：zhangly79@163.com 通讯作者：李峰（1992-），男，硕士研究生 E-mail：1374264154@qq.com

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