锻压技术

航空大型复杂蒙皮的拉伸成形技术

英文标题：Stretch forming technology of aviation large and complex skin

作者：唐涛李志强门向南蒋建军

关键词：航空蒙皮拉伸成形有限元回弹

分类号：V262

出版年,卷(期):页码：2019,44(7):57-61

摘要：

为实现航空大蒙皮零件的精确成形，缩短飞机研制周期，优化、固化拉伸参数，以及优化模具结构，分析了大蒙皮零件拉伸成形的特点。通过运用PAM-Stamp有限元数值模拟分析方法，对某公务机后机身蒙皮拉伸成形过程进行数值模拟，计算得出该零件的最优拉伸成形工艺参数，并分析了零件的回弹，优化了工装结构，最终通过试验进行验证。通过研究，基本实现了对蒙皮零件的制造，由传统的“经验型”蒙皮制造模式向“理论型”转变，缩短了零件生产周期，并节约了零件加工成本。同时，对未来蒙皮成形过程有限元仿真技术进行了探讨，并提供了宝贵意见。

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.

基金项目：

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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