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Title:Robustness process optimization and springback compensation for hood inner panel based on Autoform
Authors: Ran Aoyang Gong Xi Wang Dapeng Jiang Lei Xie Yuting Chen Junwei 
Unit: (New Model Center  Dongfeng Honda Automobile Co.  Ltd.  Wuhan 430056  China) 
KeyWords: hood inner panel  robustness springback compensation  digital twin optimization of blank holder force 
ClassificationCode:TG386
year,vol(issue):pagenumber:2023,48(6):61-68
Abstract:

 In order to improve the problems of poor robustness and poor springback for automobile body panels, for the hood inner panel, combined with the product characteristics, a fined 3D die surface was designed by CAD & CAE collaboration method, and the stamping process scheme was evaluated by forming and springback simulation with Autoform. Firstly, taking the springback amount as the objective function, taking the thinning rate as the constraint condition, and taking the blank holder force as the controllable design variable, the homogeneous single factor test was carried out, and the robustness evaluation of uncontrollable noise factors was conducted. Finally, the springback compensation for the robust process optimization results was performed by combining node displacement and geometric compensation, and the difference between physical scanning and virtual simulation was compared by digital twin. The results show that the combination of robustness process optimization and springback compensation has good reliability and accuracy. The accuracy of the first round sample reaches 95.2%, and the consistency with the simulation results reaches 94.9%, which effectively reduces the number and time of testing.

Funds:
国家自然科学基金面上项目(51975439)
AuthorIntro:
冉奥阳(1993-),男,硕士,工程师
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