Transactions of Materials and Heat Treatment

Title：Design of drawbeads and optimization of blank for hub hood fender based on Autoform

Authors： Yu Jixing Shi Xiangyang Liu Kai Liu Mingwen Yin Zuohu

Unit： Wuhan University of Technology

KeyWords： hub hood fender AutoForm drawing drawbead

ClassificationCode：TG386

year,vol(issue):pagenumber：2016,41(2):45-50

Abstract：

The shape of the hub hood fender automobile panel is arc, so it is easy to wrinkle, rupture and form inadequately during its forming because of the non-uniformity material flow. The drawing process was numerically simulated by Autoform software, and the best effect of the deformation was gained through the closed circuit drawbead by comparing three different drawbeads design, namely sections, open circuit and closed circuit. Therefore, the maximum thickening rate decreased from 3.32% to 1.18%, and the wrinkle disappeared on the panel. Furthermore, the blank shape was optimized according to the material flow rule, namely, all right angle sides were modified by circular arc to form fan-shaped blank. The results show that with the design of closed circuit drawbead and fan-shaped blank, the maximum thickening rate and thinning rate is 0.56% and 19.3% respectively, and the qualified products are obtained without defection.

Funds：

湖北省自然科学基金资助项目（2015CFB167）

余际星(1957-)，男，硕士，副教授石向阳（1990-），男，硕士研究生

Reference：

[1]史刚．拉延筋技术[J]．模具技术，2004，(3)：31-33．Shi G. Drawbead technology[J]. Die and Mould Technology, 2004，(4):31-33.

[2]马晓春，沈卫兵．有限元数值模拟技术在汽车冲压件成形中的应用[J]．浙江工业大学学报，2007，(1)：100-104．Ma X C, Shen W B. Application of numerical simulation of finite element in molding process of automobile pressing parts [J]. Journal of Zhejiang University of Technology,2007，(1):100-104.

[3]陈邦华，夏玉峰，杜婉婉．成形图在汽车内板件冲压中的应用[J]．热加工工艺，2014，43(17)：122-124．Chen B H, Xia Y F, Du W W. Application of forming diagram in auto inner panels stamping process[J]. Hot Working Technology,2014,43(17):122-124.

[4]李奇涵，王文广，邓义，等. 基于数值模拟的油箱底壳拉延筋设置与优化[J]．锻压技术，2014，39(12)：31-39.Li Q H, Wang W G, Deng Y, et al. Design and optimization of drawbead of oil based on numerical simulation[J]. Forging & Stamping Technology,2014，39(12):31-39.

[5]古成中，吴新跃. 有限元网格划分及发展趋势[J]. 计算机科学与探索，2008，(3):248-259.Gu C Z, Wu X Y. A review of FEM and trend of development[J]. Journal of Frontiers of Computer Science and Technology,2008，(3):248-259.

[6]陈涛，高晖，李光耀，等．真实拉延筋参数化建模及其在薄板冲压仿真中的应用[J]．中国机械工程，2006，17(S1)：22-26.Chen T, Gao H, Li G Y, et al. New method of modeling drawbead geometry and its application in sheet metal forming[J]. China Mechanical Engineering,2006，17(S1):22-26.

[7]印雄飞，何丹农，彭颖红，等．板料成形有限元分析中的等拉延筋模型[J]．锻压装备与制造技术，1999，34(5)：49-51．Yin X F, He D N, Peng Y H, et al. Equivalent drawbead model in FEA of sheet forming[J]. China Metalforming Equipment & Manufacturing Technology,1999,34(5):49-51.

[8]李恩．汽车前轮罩拉深成形工艺研究[D]．合肥：合肥工业大学，2010．Li E. Study on Drawing Process of Front Wheel Cowling of the Automobile[D]. Hefei:Hefei University of Technology，2010.

[9]刘志军，梁秀强，卢宁．汽车冲压件起皱叠料问题的解决方案[J]．模具制造，2015，(2):20-23.Liu Z J, Liang X Q, Lu N. Solutions for the wrinkling and folding problem of automobile stamping parts[J]. Die & Mould Manufacture,2015，(2):20-23.

[10]孙琳琳．板料拉深中的拉延筋设置规律研究[D]．济南：山东大学，2006．Sun L L. Experimental Research on Regulation of Darwbead Installation in the Sheet Meatl Drawnig[D]. Ji'nan: Shandong University,2006.

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