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镀层金属板冲压成形断裂失效的有限元模拟
英文标题:Finite element simulation of fracture in stamping for coated metal sheet
作者:伍杰 马增胜 阳习雨 刘惺 
单位:湖南工学院 湘潭大学 
关键词:镀层金属板 冲压 损伤 有限元模拟 
分类号:TG386
出版年,卷(期):页码:2015,40(3):136-140
摘要:

镀层金属板在加工过程中,由于工艺参数、模具几何参数的影响,经常会出现裂纹,并最终导致板材的断裂。以双面电沉积镍的低碳钢板为研究对象,采用基于连续介质损伤有限元模拟以及冲压成形实验相结合的方法对镀层金属板在冲压过程中的失效问题进行了研究。结果表明:随着冲压深度的增加,杯形件中的等效塑性应变与损伤值均增加,当冲压深度达到10 mm时,在杯形件冲头圆角处出现断裂现象。通过冲力冲程曲线与成形件形状的比较和损伤变量分布、等效塑性应变分布以及厚度减薄的分析发现,有限元模拟结果与冲压成形的试验结果符合得较好,证明了有限元模拟的正确性。
 

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. 

基金项目:
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)
作者简介:
伍杰(1982-), 男,博士,讲师
参考文献:


[1]Menezes L F, Teodosiu C. Three-dimensional numerical simulation of the deep-drawing process using solid finite elements[J]. Journal of Materials Processing Technology, 2000, 97(1): 100-106.
[2]肖业兴, 马铁军. 金属薄板冲压成形的有限元模拟研究[J]. 锻压技术,2012,38(1):165-168.Xiao Y X, Ma T J. FEM simulation of sheet metal stamping [J]. Forging & Stamping Technology, 2012, 38(1):165-168.
[3]Colgan M, Monaghan J. Deep drawing process: Analysis and experiment [J]. Journal of Materials Processing Technology, 2003, 132(1-3): 35-41.
[4]伍杰. 镍镀层金属薄板冲压成形的失效分析[D]. 湘潭:湘潭大学, 2012.Wu J. Failure Analysis of Nickel Coated Metal Sheet During Deep Drawing[D]. Xiangtan: Xiangtan University, 2012.
[5]Hauw B, Dubar L, Oudin J. Improvement of stamping computations by means of the identification of the bulk behavior of coatings: Application to galvanized sheets[J]. Journal of Materials Processing Technology, 1999, 94(1): 23–29.
[6]Takuda H, Mori K, Fujimoto H, et al. Prediction of forming limit in deep drawing of Fe/A1 laminated composite sheets using ductile fracture criterion[J]. Journal of Materials Processing Technology, 1996, 60(1-4): 291-296.
[7]van den Bosch M J, Schreurs P J G, Geers M G D. On the prediction of delamination during deep-drawing of polymer coated metal sheet[J]. Journal of Materials Processing Technology, 2009, 209(1): 297-302.
[8]Zhou L Q, Li Y P, Zhou Y C. Forming limit of electro deposited nickel coating in the left region[J]. Journal of Materials Engineering and Performance, 2006, 15(3): 287-294.
[9]刘先兰, 张文玉, 刘楚明. 细观损伤力学及其在金属塑性加工中的应用[J]. 锻压技术, 2008, 33(1):9-13.Liu X L, Zhang W Y, Liu C M. Meso-damage mechanics and its application in metal plastic forming[J]. Forging & Stamping Technology, 2008, 33(1):9-13.
[10]Lemaitre J, Sermage J P. One damage law for different mechanisms[J]. Computational Mechanics, 1997, 20(1): 84-88.
[11]Saanouni K. On the numerical prediction of the ductile fracture in metal forming[J]. Engineering Fracture Mechanics, 2008, 75(11): 3545-3559.
[12]Gelin J C, Oudin J, Ravalard Y. An imposed finite element method for the analysis of damage and ductile fracture in cold metal forming processes[J]. Ann. CIRP, 1985, 34 (1): 209-213.
[13]Khelifa M, Oudjene M, Khennane A. Fracture in sheet metal forming: Effect of ductile damage evolution[J].Computers and Structures, 2007, 85(3-4): 205-212.
[14]Fan J P, Tang C Y, Tsui C P, et al. 3D finite element simulation of deep drawing with damage development[J]. International Journal of Machine Tools & Manufacture, 2006, 46(9): 1035-1044.
[15]Liao Y G, Zhou Yichun, Huang Yongli, et al. Measuring elastic-plastic properties of thin films on elastic-plastic substrates by sharp indentation[J]. Mechanics of Materials, 2009, 41(3):308-318.
[16]Wu Jie, Ma Zengsheng, Zhou Yichun, et al. Prediction of failure modes during deep drawing of metal sheets with nickel coating[J]. Journal of Materials Science & Technology, 2013, 29(11):1059-1066.
[17]孙立君, 黄珍媛, 张寒, 等. 超薄板胀形破裂极限预测理论研究[J]. 锻压技术, 2013, 38(2): 142-146.Sun L J, Huang Z Y, Zhang H, et al. Theory research on rupture limit prediction for thin plate[J]. Forging & Stamping Technology, 2013, 38(2): 142-146.

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