Transactions of Materials and Heat Treatment

Title：Stretch forming technology of aviation large and complex skin

Authors： Tang Tao Li Zhiqiang Men Xiangnan Jiang Jianjun

Unit： Chengdu Aircraft Industrial (Group) Co. Ltd.

KeyWords： aviation skin stretch forming finite element springback

ClassificationCode：V262

year,vol(issue):pagenumber：2019,44(7):57-61

Abstract：

In order to realize the precision forming of aviation large skin parts, shorten the development period of aircraft, solidify and optimize the stretch parameters and optimize the die structure, the stretch forming characteristics of large skin parts were analyzed, and the stretch forming process of the rear fuselage skin for a business aircraft was simulated by the finite element numerical simulation method PAM-Stamp. Then, the optimal stretch forming process parameters of part were obtained by calculation, and the springback of part was analyzed. Furthermore, the tooling structure was optimized, and the simulation results were verified by the experiments. Based on the above research, the manufacture of skin part are basically realized, and the traditional “experiential-type” skin-manufacturing mode is transformed into that of the “theoretical-type”. Thus, the production cycle of part is reduced to save the cost of part manufacturing. At the same time, the finite element simulation technology of skin forming process in the future was discussed, and some valuable suggestions were provided.

Funds：

唐涛（1983-），男，学士，工程师，E-mail：17946492@qq.com；通讯作者：李志强（1989-），男，硕士，工程师，E-mail：18108245086@163.com

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