Finite element analysis of stiffness and static dent resistance of aluminum alloy double-curved panel in viscous pressure forming

来源期刊：中国有色金属学报(英文版)2009年增刊第2期

论文作者：李毅 王忠金

文章页码：312 - 317

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

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.