Springback prediction for double-curvature stiffened panel during milling

被引：0
|
作者：
Liu C.-G. [1 ,2 ]
Yu X.-T. [1 ,2 ]
Yue T. [1 ,2 ]
Li D.-L. [1 ,2 ]
Zhang M.-Z. [1 ,2 ]
机构：
[1] Roll-forging Research Institute, Jilin University, Changchun
[2] College of Materials Science and Engineering, Jilin University, Changchun
来源：
Jilin Daxue Xuebao (Gongxueban)/Journal of Jilin University (Engineering and Technology Edition) | 2021年 / 51卷 / 01期
关键词：
Double-curvature panel; Finite element method(FEM); Residual stress; Springback prediction;
D O I：
10.13229/j.cnki.jdxbgxb20190169
中图分类号：
学科分类号：
摘要：
Aiming at the springback problem during manufacturing process of aluminum alloy thin-walled parts, a springback prediction method for double-curvature stiffened panel in milling process was proposed. The method estimates the springback value in the two directions of the panel according to the redistribution of the residual stress after the material is removed layer by layer. The finite element simulation results show that the stress distribution and radius after springback of the panel during the milling process were close to the calculated results. The maximum stress variation in both directions appears when the milling depth reaches the initial neutral surface. When the remaining thickness decreases, the errors between calculation results and FEM results increase gradually. In addition, the simulation results of different single-layer milling thickness show that the larger the thickness of single-layer milling, the larger the error of this method, and the maximum error is 9.07%. The forming-milling experiments were performed to verify the proposed method. The results show that the proposed method could predict the springback of the double-curvature stiffened panel. © 2021, Jilin University Press. All right reserved.
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页码：188 / 199
页数：11
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