Numerical simulation and experimental study of 304 metastable austenitic stainless steel in cup drawing

YE Liyan; LI Xifeng; CHEN Jun

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Numerical simulation and experimental study of 304 metastable austenitic stainless steel in cup drawing

YE Liyan #,LI Xifeng *,CHEN Jun

National Engineering Research Center of Die & Mold CAD, Shanghai Jiao Tong University, Shanghai 200030 China

*Correspondence author

#Submitted by

Subject:

Funding: Natural Science Foundation of China （No.No. 51105248）, Doctoral Program Foundation of Institutions of Higher Education of Chian （No.No. 20090073120058）

Opened online:10 December 2012

Accepted by: none

Citation: YE Liyan,LI Xifeng,CHEN Jun.Numerical simulation and experimental study of 304 metastable austenitic stainless steel in cup drawing[OL]. [10 December 2012] http://en.paper.edu.cn/en_releasepaper/content/4499906

Two constitutive equations including modified Johnson-Cook and Swift were used to fit the true stress-strain curves of 304 metastable austenitic stainless steel. The fitting results were good. Two simulations of cup drawing with two constitutive equations based on LS-Dyna and the practical experiment of cup drawing were carried out. The comparison of simulation and experiment, from the aspects of thickness variation, load-displacemen curve and major strain, showed that two simulations predicted the thickness variation of the bottom and wall of cup well. The prediction of thinning at the punch radius and thickening at the die radius and flange based on Johnson-Cook was more correct than Swift which was more effective in predicting the load-displacement curve. Two constitutive equations also worked well in predicting major strain distribution at the bottom and punch radius.

Keywords:modified Johnson-Cook; 304 metastable austenitic stainless steel; cup drawing

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