Transactions of Materials and Heat Treatment

Title：Finite element simulation of fracture in stamping for coated metal sheet

Authors： Wu Jie Ma Zengsheng Yang Xiyu Liu Xing

Unit： Hunan Institute of Technology Xiangtan University

KeyWords： coated metal sheet stamping damage finite element simulation

ClassificationCode：TG386

year,vol(issue):pagenumber：2015,40(3):136-140

Abstract：

Cracks appear usually and eventually lead to failure in the coated metal sheet during the stamping process by the effects of process and tooling configuration parameters. For low carbon steel sheet with electrodeposited coating nickel of double-sided, its fracture in the stamping was studied by combining the continuum damage numerical simulation with the experiment. The results show that the damage and equivalent plastic strain increase with the increase of drawing depth. Fracture occurs at the radius corner of punch when the drawing depth increases to 10 mm. The experiment results is compared well with the simulation results by comparisons of punch displacement curve with the drawn part, distribution of damage variables, analyses of equivalent plastic strain and the thinning of blank. Further, the correctness of the finite element simulation is verified.

Funds：

国家自然科学基金资助项目（11102176）；湖南工学院科研启动基金资助项目(HQ13010)

伍杰（1982-）, 男，博士，讲师

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