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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 13    No. 4    August 2003

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Numerical simulation-driven optimization of sheet metal drawing part shape
CHEN Jun(陈 军)1, SHI Xiao-xiang(石晓祥)2, RUAN Xue-yu(阮雪榆)1

1. National Die and Mold CAD Engineering Research Center,
Shanghai Jiaotong University, Shanghai 200030, China;
2. Engineering Research Center for Net-Shape Manufacturing,
The Ohio State University, Columbus, OH 43210, USA

Abstract:Numerical simulation and perturbation method were coupled into the iteration process for optimizing the sheet metal part stamping quality, by minimizing the risk of rupture, wrinkle and unstretched area. The optimization of the sheet metal drawing part surface was realized by adjusting the FEM node/element perturbation vector directions and values. The sweeping simplex algorithm was modified to better control the optimization process, and one-step simulation code was used to verify the new design formability. Finally, an autoauto fender drawing part shape optimization testified the proposed methods successfully.

 

Key words: sheet metal drawing; surface optimization; numerical simulation;
modified sweeping simplex; fender

ISSN 1672-7029
CN 43-1423/U

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