Transactions of Materials and Heat Treatment

Title：Analysis on vibration-assisted stretch forming of aircraft skin panel

Authors： Bai Linglei Chen Liangyu Zhao Kunmin

Unit： Hefei University of Technology Provincial Key Laboratory of Infectious Manufacturing and Equipment for Aviation Structural Parts

KeyWords： vibration aircraft skin panel stretch forming residual-stress numerical simulation

ClassificationCode：TG386

year,vol(issue):pagenumber：2017,42(11):18-25

Abstract：

After stretch forming, the residual stress in the formed panel causes springback, which seriously affects the assembly quality. Based on the cause of springback, the mechanism of residual-stress relief through vibration was described by the stress-strain mechanism of workpiece, and an vibration-assisted stretch forming of aircraft skin panel was proposed. Then, The basis condition of frequency and amplitude for the main parameters of process in the application and the reasonable range of practical choice in the practical application were given. Therefore, for the stretch forming of aircraft front edge skin panel, the influences of vibration on the springback and the frequency and amplitude on the springback modification were analyzed by numerical simulation and verified by the experiments. The results show that adding vibration in the stretch forming process of aircraft skin panel can reduce springback effectively, and when the frequency and amplitude are 30 Hz and 1.5 mm respectively, the sprinback is the minimum.

Funds：

国家自然科学基金资助项目(11472072)

作者简介：柏玲磊（1991-），男，硕士研究生 E-mail：hfutllbai@sina.com 通讯作者：赵坤民（1971-），男，博士，教授，博士生导师，国家“千人计划”专家 E-mail：kmzhao@dlut.edu.cn

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