Numerical simulation study on rolling-chemical milling process of aluminum-lithium alloy skin panel

2017 3rd International Conference on Applied Materials and Manufacturing Technology

Huang, Z.B.^1 ; Sun, Z.G.^1 ; Sun, X.F.^1 ; Li, X.Q.^2

Shanghai Aircraft Manufacturing Co., Ltd., COMAC, Shanghai

201325, China^1

School of Mechanical Engineering and Automation, Beihang University, Beijing

100191, China^2

关键词: Aluminum lithium alloy;    Chemical milling;    Geometric accuracy;    Material performance;    Numerical simulation studies;    Process parameters;    Simulation model;    Technological parameters;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/242/1/012040/pdf
DOI  :  10.1088/1757-899X/242/1/012040

来源: IOP

【 摘 要 】

Single curvature parts such as aircraft fuselage skin panels are usually manufactured by rolling-chemical milling process, which is usually faced with the problem of geometric accuracy caused by springback. In most cases, the methods of manual adjustment and multiple roll bending are used to control or eliminate the springback. However, these methods can cause the increase of product cost and cycle, and lead to material performance degradation. Therefore, it is of significance to precisely control the springback of rolling-chemical milling process. In this paper, using the method of experiment and numerical simulation on rolling-chemical milling process, the simulation model for rolling-chemical milling process of 2060-T8 aluminum-lithium alloy skin was established and testified by the comparison between numerical simulation and experiment results for the validity. Then, based on the numerical simulation model, the relative technological parameters which influence on the curvature of the skin panel were analyzed. Finally, the prediction of springback and the compensation can be realized by controlling the process parameters.