Transactions of Materials and Heat Treatment

Title：Research on multi-step hydroforming process and optimization of process parameters for profiled cross-section component

Authors： Zhang Fan Lang Lihui Cheng Pengzhi Wang Tao Wu Hai

Unit： Beihang University Shanghai Huizhong Automotive Manufacturing Co. Ltd.

KeyWords： profiled cross-section component hydroforming multi-step process numerical simulation orthogonal test

ClassificationCode：TG394

year,vol(issue):pagenumber：2014,39(3):42-46

Abstract：

Trailing arm which is one of the typical automotive chassis parts is a profiled cross-section component, and it can be made with multi-cavity mould in order to improve material utilization and production efficiency. A numerical simulation investigation of multi-step hydroforming process of the part was conducted by using the dynamic explicit FEM code of Dynaform. And the influence of main process parameters was studied with orthogonal test. On the basis above, experiments of tube bending, pre-forming and hydroforming were carried out. The results show that the simulation result agrees well with the experimental one, and an ideal component can be made with the process parameters of pressure of axle feeding 30 MPa, axle feeding 15 mm and friction factor 0.06.

Funds：

工信部国际科技合作资助项目（2010DFA52030）；国家自然科学基金资助项目（51175024）

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