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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 19    Special 2    September 2009

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Finite element analysis of stiffness and static dent resistance of aluminum alloy double-curved panel in viscous pressure forming
LI Yi(李 毅), WANG Zhong-Jin(王忠金)

School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China

Abstract:The static dent resistance performance of the aluminum alloy double-curved panel formed using viscous pressure forming (VPF) was studied by finite element analysis, which mainly considers the forming process conditions. The whole simulation consisting of three stages, i.e., forming, spring-back and static dent resistance, was carried out continuously using the finite element code ANSYS. The influence of blank holder pressure (BHP) and the drawbead on the stiffness and the static dent resistance of the panels formed using VPF was analyzed. The results show that the adequate setting of the drawbead can increase the plastic deformation of the double-curved panel, which is beneficial to the initial stiffness and the static dent resistance. There is an optimum BHP range for the stiffness and the static dent resistance.

 

Key words: aluminum alloy; double-curved panel; viscous pressure forming; panel stiffness; static dent resistance; finite element analysis

ISSN 1672-7029
CN 43-1423/U

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