上海交通大学学报 ›› 2017, Vol. 51 ›› Issue (11): 1312-1319.doi: 10.16183/j.cnki.jsjtu.2017.11.005
万旭敏,赵亦希,孔庆帅,于忠奇
发布日期:
2017-11-30
基金资助:
WAN Xumin,ZHAO Yixi,KONG Qingshuai,YU Zhongqi
Published:
2017-11-30
摘要: 针对金属薄板在普旋成形时易出现法兰起皱失效的问题,开展了铝合金封头普旋成形的有限元仿真及实验研究,分析旋压法兰边的弹性应变能及其增量与起皱失稳之间的关系,提出了铝合金材料的起皱判据.结果表明:在金属薄板普旋成形过程中,旋轮给坯料施加的变形力导致了法兰边的弹性应变能增加和振荡.由于弹性应变能增量幅值的增加,法兰边和旋轮作用区围成的扇形区域中出现了不稳定区域,故产生失稳起皱.基于Drucker公设提出了法兰起皱的判据,并建立了计算流程.通过普旋实验的验证可知,该判据能较准确地预测旋压成形时法兰边的起皱缺陷.
中图分类号:
万旭敏,赵亦希,孔庆帅,于忠奇. 旋压法兰起皱预测[J]. 上海交通大学学报, 2017, 51(11): 1312-1319.
WAN Xumin,ZHAO Yixi,KONG Qingshuai,YU Zhongqi. Research on Prediction of Flange Wrinkling in Conventional Spinning[J]. Journal of Shanghai Jiao Tong University, 2017, 51(11): 1312-1319.
[1]WONG C C, DEAN T A, LIN J. A review of spinning, shear forming and flow forming processes[J]. International Journal of Machine Tools and Manufacturing, 2003, 43: 1419-1435. [2]RUNGE M. Spinning and flow forming[J]. Leifield GmbH, 1994, 9(1): 101-109. [3]杨合, 詹梅, 李甜, 等. 铝合金大型复杂薄壁壳体旋压研究进展[J]. 中国有色金属学报, 2011, 21(10): 2534-2550. YANG He, ZHAN Mei, LI Tian, et al. Advances in spinning of aluminum alloy large-sized complicated thin-walled shells[J]. Transactions of Nonferrous Metals Society of China, 2011, 21(10): 2534-2550. [4]SUN Y N, WAN M, WU X D. Wrinkling prediction in rubber forming of Ti-15-3 alloy[J]. Transactions of Nonferrous Metals Society of China (English Versions), 2013(10): 3002-3010. [5]KOBAYASHI S. Instability in conventional spinning of cones[J]. Journal of Engineering for Industry-Transactions of the ASME (Series B), 1963, 85: 44-48. [6]HAYAMA M, MUROTA T, KUDO H. Deformation modes and wrinkling of flange on shear spinning[J]. Bulletin of JSME, 1966, 9(34): 423-433. [7]HAYAMA M, TAGO A. The fracture of walls on shear spinning: Study on the spinnability of aluminium plates[J]. Bulletin of the Faculty of Engineering, Yokohama National University, 1968, 17: 93-103. [8]HAYAMA M, KUDO H, SHINOKURA T. Study of the pass schedule in conventional simple spinning[J]. Bulletin of the JSME, 1970, 13(65): 1358-1365. [9]WANG X, CAO J. An analytical prediction of flange wrinkling in sheet metal forming[J]. Journal of Manufacturing Processes, 2000, 2(2): 100-107. [10]KLEINER M, GOBEL R, KANTZ H, et al. Combined methods for the prediction of dynamic instabilities in sheet metal spinning[J]. CIRP Annals-Manufacturing Technology, 2002, 51(1): 209-214. [11]WATSON M, LONG H. Wrinkling failure mechanics in metal spinning[J]. Procedia Engineering, 2014, 81: 2391-2396. [12]耿艳青. 多道次普通旋压成形工艺试验及数值模拟研究[D]. 南昌: 南昌航空大学航空制造工程学院, 2012: 24-25. [13]STOUGHTON T B, YOON J W. Review of Drucker’s postulate and the issue of plastic stability in metal forming[J]. International Journal of Plasticity, 2006, 22(3): 391-433. [14]张柔雷. 关于塑性力学公设适用性的讨论[J]. 力学与实践, 1990, 12(6): 70. ZHANG Roulei. Discussion on the applicability of plasticity mechanics’ postulates[J]. Mechanics in Engneering, 1990, 12(6): 70. [15]王仁. 塑性力学引论[M].修订版.北京: 北京大学出版社, 1989: 126-127. [16]徐秉业. 应用弹塑性力学[M]. 北京: 清华大学出版社, 1995: 120-121. [17]林忠钦. 车身覆盖件冲压成形仿真[M],北京: 机械工业出版社, 2004: 59. |
[1] | 李萍,代光旭,杨卫正,胡传鹏,吴超,薛克敏. 铲旋工艺的有限元分析及试验研究[J]. 上海交通大学学报, 2019, 53(6): 719-725. |
[2] | 解焕阳, 董湘怀, 方林强. 电塑性效应及在塑性成形中的应用新进展[J]. 上海交通大学学报(自然版), 2012, 46(07): 1059-1062. |
[3] | 何建丽,肖艳红,崔振山,陈飞. 热成形韧性断裂判据的建立及应用[J]. 上海交通大学学报(自然版), 2013, 47(11): 1707-1711. |
[4] | 路平1a,1b,张云开1a,1b,陈波2. 汽车轮辐错距强力旋压成形的有限元仿真[J]. 上海交通大学学报(自然版), 2015, 49(01): 56-61. |
[5] | 丁亚男,谭淑霖,韩先洪,崔振山. 硼钢热冲压产品的力学性能预测模型及U型件验证[J]. 上海交通大学学报, 2017, 51(11): 1320-1327. |
阅读次数 | ||||||
全文 |
|
|||||
摘要 |
|
|||||