Transactions of Materials and Heat Treatment

Title：Finite element simulation on discrete filling rolling for integral panel skins

Authors： Li Yeqi Liu Jinsong Liu Ting Wang Yu Du Tongliang Song Hongwu Zhang Shihong

Unit： Shenyang Ligong University Chinese Academy of Sciences Shanghai Aerospace Equipments Manufacturer Co. Ltd.

KeyWords： rolling discrete filling integral panel skins thickness of backing plate number of filler

ClassificationCode：TG306

year,vol(issue):pagenumber：2020,45(2):106-112

Abstract：

The integral panel skins of aluminum alloy with a certain curvature is a typical component with multi-ribs which is difficult to form and easy to produce various defects by traditional bending process. Therefore, the discrete filling assisted rolling for integral panel skins of 2A12T4 aluminum alloy was proposed and compared with the overall filling rolling through experiments. At the same time, the influent factors in the discrete filling assisted rolling of integral panel skins were explored by the finite element simulation technology. The results show that the number of filler and the thickness of upper and lower backing plates have a great influence on the forming quality, and when the number of filler is 3-6, the forming is stable to avoid rib buckling and instability. Furthermore, with the increasing of the thickness for backing plate, the circular arc on the surface of panel skins is smoother and more continuous, but the springback is enhanced. When the thickness of upper and lower backing plates is 10-20 mm respectively, the comprehensive performance of the integral panel skins is better. Thus, the discrete filling assisted rolling technology can form the high-quality integral panel skins.

Funds：

国家自然科学基金资助项目（51875547）

李烨琪（1994-），女，硕士研究生，E-mail：936022904@qq.com；通讯作者：刘劲松（1971-），男，博士，副教授，E-mail：jsliu@imr.ac.cn

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