Transactions of Materials and Heat Treatment

Title：Measurement and application of forming limit curve for DC05 sheet metal

Authors： Lu Jianjun Zhu Yitao Yi Jiedong Chen Wei

Unit： Changzhou Vocational Institute of Mechatronic Technology Jiangsu University

KeyWords： forming limit curve DC05 steel bulging experiment drawing criterion

ClassificationCode：TG386

year,vol(issue):pagenumber：2019,44(12):27-32

Abstract：

The forming limit curve of DC05 sheet metal was measured by bulging experiment of steel die, and it was applied to the numerical simulation of drawing for automobile seat support plate. Then, the cracking, excessive thinning and wrinkling defects during the drawing process were predicted. Comparing the simulation results between the measured and the software-built forming limit curves, the simulation results based on the measured forming limit curves were more consistent with the experimental results which was verifed by the actual experiment. The results show that through the forming limit curve of DC05 sheet metal measured by the experimental method, in the finite element numerical simulation, the wrinkling phenomenon in the key area is less, the thickness distribution of sheet metal is more uniform, the fracture risk coefficient is lower, and the quality of drawing part meets the actual requirements more. Therefore, the measured forming limit curve of sheet metal is more accurate and can be used as a criterion for numerical simulation of forming properties to replace the forming limit curve of the software.

Funds：

江苏省科技支撑计划（工业）项目（BE2014056）；江苏高校“青蓝工程”资助项目（苏教师〔2018〕12号，苏教师〔2019〕3号）

陆建军(1978-), 男, 硕士, 副教授 E-mail：794632435@qq.com 通讯作者: 陈炜(1965-), 男, 博士, 教授 E-mail:315157645@qq.com

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