Transactions of Materials and Heat Treatment

Title：Mechanism analysis on influence of variable speed deep drawing on formability of B340/590DP sheet metal

Authors： Fu Xiujuan Zhou Zhen Yu Yuehong Li Jianjun

Unit： Wuhan Institute of Technology Huazhong University of Science and Technology

KeyWords： variable speed deep drawing formability equivalent stress equivalent strain rate virtual power equation

ClassificationCode：TG386

year,vol(issue):pagenumber：2018,43(4):131-137

Abstract：

In order to study the mechanism of influence of variable speed deep drawing on the formability of sheet metal in the stamping process, a virtual power equation and finite element analysis model in the deep drawing process were established. The results show that the equivalent stress, equivalent strain rate, friction between sheet and die and normal stress in the main deformation zone are main factors influencing the deep drawing formability. However, the variable speed deep drawing affects the formability of sheet metal by decreasing the equivalent stress, equivalent strain rate and friction between sheet and die in the main deformation zone. Comparing the forming state and forming quality of parts at different forming speeds, the theory analysis and finite element simulation were verified by deep drawing experiment. Thus, the reasonable variable speed in forming process can reduce the total deformation power so as to improve the deep drawing formability of sheet metal, and the mechanism analysis on variable speed provides a theoretical basis for the application of variable speed forming.

Funds：

国家自然科学基金资助项目(51575406)；材料成形与模具技术国家重点实验室开放课题研究基金（P2016-16）；研究生教育创新基金（CX2016015）

付秀娟（1974-），女，博士，副教授；E-mail：fuxiujuan2008@163.com

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