Transactions of Materials and Heat Treatment

Title：Analysis and optimal design on press dimple forming process for aircraft seal plate based on Dynaform

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ClassificationCode：TG386.1

year,vol(issue):pagenumber：2021,46(1):37-42

Abstract：

After the dimples in aircraft seal plate are knocked, the surface of aircraft seal plate has different degrees of wrinkle and deformation, which is difficult to eliminate. Therefore, the dimple forming process of aircraft seal plate was simulated by nonlinear finite element analysis software Dynaform. The results show that during the forming process, the seal plate has no blank holder to support and the forming method is too rough and severe, which causes the seal plate to wrinkle and deform. In view of these issues, the corresponding measures were made to change the previous knock dimple forming method, and a pneumatic press dimple device was invented. Furthermore, the optimization design on mechanism was conducted by DMU module motion mechanism simulation method in software CATIA, and the blank holder plate was set up to limit the deformation of seal plate in flange area. Finally, the actual production results show that after the implementation of the improvement methods, the large-area wrinkle deformation of seal plate is eliminated, and the surface quality is greatly improved. Thus, the aerodynamic performance and stealth performance of aircraft during the flight are ensured.

Funds：

基金项目:四川省重点研发项目（2018GZ0063）

作者简介：成骏（1990-），男，学士，工程师 E-mail：chengj016@avic.com

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