Transactions of Materials and Heat Treatment

Title：Analysis of wrinkling factors for hemispherical stamping parts

Authors： Li Zhenjie

Unit： Henan Institute of Engineering

KeyWords： hemispherical parts wrinkle blank holding force(BHF) coefficient of friction finite element

ClassificationCode：TG35

year,vol(issue):pagenumber：2014,39(5):56-60

Abstract：

Theoretical analysis and research of finite element simulation were carried on flange wrinkle and sphere wrinkle of hemispherical parts with wide flange. Theoretical analysis demonstrates that flange wrinkle is caused by compressive stress, sphere wrinkle is caused by shrink around direction of latitude, and inhomogeneous circumferential tensile stress also leads to partial wrinkle in spherical surface. Finite element simulation shows that with the increasing of BHF, degree of flange wrinkle decreases and eventually disappears. With the increasing of BHF, blank diameter and coefficient of friction, the degree of sphere wrinkle decreases and eventually disappears too. Rectangle blank leads to partial wrinkle. So, the elimination of flange wrinkle can be realized by the increasing of BHF and blank diameter, and the occurring of wrinkle can be inhibited by the increasing of BHF, blank diameter and coefficient of friction, so does adopting of round blank.

Funds：

李振杰（1968-），男，硕士，讲师,工程师

Reference：

［1］王作成，韩福涛，崔国涛. 圆锥形件变压边力拉深工艺的研究[J].塑性工程学报，2006,13（2）：25-28.Wang Zuocheng, Han Futao, Cui Guotao. On deep-drawing process of conical work pieces with a variable blank holding force[J]. Journal of Plasticity Engineering, 2006,13（2）：25-28.
［2］李恩，王成勇，刘克素. 压边力对汽车前轮罩板成形性能的影响[J]. 合肥工业大学学报，2010，33(1)：32-35.Li En, Wang Chengyong, Liu Kesu. Influence of blank holder force on the formability of front wheel cowling panels of the automobile [J]. Journal of Hefei University of Technology, 2010，33(1)：32-35.
［3］陈水先，张辉，曾新祥，等. FVS0812铝合金半球形件拉深成形的有限元分析[J]. 锻压技术，2008，33(2)：128-133.Chen Shuixian, Zhang Hui, Zeng Xinxiang, et al. Finite element analysis on drawing process of FVS0812 aluminum alloy semi-spheroid[J].Forging ＆ Stamping Technology, 2008，33(2)：128-133.
［4］刘鸿文. 板壳理论[M]. 杭州：浙江大学出版社，1987.Liu Hongwen. Theory of Plates and Shells[M].Hangzhou: Zhejiang University Press, 1987.
［5］沈黎萍，高锦张，蒋松，等. 板料渐进成形半球形件的路径研究[J]. 锻压技术， 2010， 35(6)：40-44.Shen Liping, Gao Jinzhang, Jiang Song, et al. Research on incremental forming path of hemispherical workpiece [J].Forging ＆ Stamping Technology, 2010， 35(6)：40-44.
［6］李硕本. 冲压工艺理论与新技术[M].北京：机械工业出版社，2002.Li Shuoben. Stamping Process Theory and New Technology[M].Beijing: China Machine Press,2002.
［7］李春峰，杨玉英，李硕本. 半球形零件冲压变形失稳点分析[J]. 塑性工程学报，1995，2(1)：36-42.Li Chunfeng, Yang Yuying, Li Shuoben. Analysis of instability points of hemispherical parts in sheet metal forming[J]. Journal of Plasticity Engineering, 1995，2(1)：36-42.
［8］Ronda J, Memer C D, Bothma A S, et al. Simulation of square-cup deep-drawing with various friction and material models[J]. Journal of Material Processing Technology, 1995, (50): 92-104.
［9］陶友瑞，张福全，黄长清. 半球形件冲压成形的防内皱压板力研究[J].塑性工程学报，2004，11(1)：29-31.Tao Yourui, Zhang Fuquan,Huang Changqing. Investigation for critical side-wall wrinkle BHF of the hemisphere-shaped workpiece in the process of stamping[J]. Journal of Plasticity Engineering, 2004，11(1)：29-31.
［10］张晓斌，孙宇，攀红梅，等.板材成形压边力控制技术研究现状及发展趋势[J].锻压技术，2007,32（6）：6-12.Zhang Xiaobin, Sun Yu, Pan Hongmei, et al. Recent research and development trend of blank holder force control technology for sheet metal forming [J]. Forging ＆ Stamping Technology, 2007,32（6）：6-12.
［11］邱晓宁，刘泓滨，王义. 板料成形中起皱问题的分析及解决方案[J].机械设计，2009，26(9)：64-66.Qiu Xiaoning, Liu Hongbin, Wang Yi. Analysis and solving scheme on corrugation problem in the formation of plate materials[J].Journal of Machine Design, 2009，26(9)：64-66.
［12］安家菊.基于Dynaform宽凸缘拉深件数值模拟分析[J].机械设计与制造，2011，(9)：195-197.An Jiaju. Based on the Dynaform for wide flange drawing part of numerical simulation analysis [J]. Mechinery Design ＆ Manufacture, 2011，(9)：195-197.

Service：

【This site has not yet opened Download Service】【Add Favorite】