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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 of two-stage deep drawing of complex-shaped parts
YANG Jian-hua(杨建华), CHEN Jun(陈 军),
HE Dan-nong(何丹农), RUAN Xue-yu(阮雪榆)

Department of Plasticity Technology,
Shanghai Jiaotong University, Shanghai 200030, China

Abstract:Choosing inner-door panel of auto as an example, the two-stage deep drawing of complex sheet metal was studied. By using CAD software UG and numerical simulation software DYNAFORM, the characteristic of the CAD modeling of the simple workpiece and the complex sheet metal, finite element modeling and the selection of parameters were analyzed. The effects of three important material parameters such as yield stress, strain hardening exponent and normal anisotropic parameter on the formability of the two-stage deep drawing of inner-door panel of auto were investigated. The results show that the yield stress has large influence on the increase of thickness, while the strain hardening exponent has little effect on the thickness change. Otherwise, larger normal anisotropic parameter can result in a better formability of the sheet.

 

Key words:  inner-door panel of auto; complex sheet metal; two-stage deep drawing; numerical simulation

ISSN 1672-7029
CN 43-1423/U

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