吉林大学学报(工学版) ›› 2018, Vol. 48 ›› Issue (1): 221-228.doi: 10.13229/j.cnki.jdxbgxb20170021

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Effect of multi-point punch active loading path on the stretch-forming of sheet

LIU Chun-guo, LIU Wei-dong, DENG Yu-shan   

  1. Roll Forging Research Institute, Jilin University, Changchun 130022,China
  • Received:2017-01-06 Online:2018-02-26 Published:2018-02-26

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Abstract: In This paper the influences of three different loading paths on the quality of stretch- forming were studied. Based on the plane strain assumption, the s tress state of Al alloy sheet between multi-point stretch-forming and equidifferent-curvature punch active loading stretch-forming were compared and analyzed. The strain, stress, elongation distribution of the multi-point stretch-forming and the multi-point punch active loading stretch-forming under three different loading conditions were studied by numerical simulation. Results show that, compared with the multi-point stretch-forming, constant velocity punch active loading, isochronous punch active loading and equidifferent-curvature punch active loading can not only reduce the stress concentration in the position between the sheet and jaw, but also improve the uniformity of the distribution of stress, strain and elongation. The results confirm that equidifferent-curvature punch active loading method can achieve the best formability of Al alloy sheet.

Key words: materials synthesis and processing technology, multi-point die, loading path, stretch-forming, numerical simulation

CLC Number: 

  • TG386.41
[1] Tan Fu-xing, Li Ming-zhe, Cai Zhong-yi.Formability analysis on the process of multi-point forming for titanium alloy retiary sheet[J]. International Journal of Advanced Manufacturing Technology, 2009, 41(11): 1059-1065.
[2] Philippe Dal Santo, Guénaël Germain, Serge Boude, et al.Cold forming by stretching of aeronautic sheet metal parts[J]. International Journal of Computer Integrated Manufacturing, 2014, 27(2): 344-351.
[3] Kohara S.Forming limit curves of aluminum andaluminum alloy sheets and effects of strain path on thecurves[J]. Materials Processing Technology, 1993, 38(3): 723-735.
[4] 蔡中义,张海明,李光俊,等. 多点拉形数值模拟及模具型面补偿方法[J]. 吉林大学学报:工学版, 2008, 38(2): 329-333.
Cai Zhong-yi, Zhang Hai-ming, Li Guang-jun, et al.Numerical simulation of sheet metal multi-point stretch forming and compensation of die surface[J]. Journal of Jilin University (Engineering Science), 2008, 38(2): 329-333.
[5] 周朝晖,蔡中义,李明哲. 多点模具的拉形工艺及其数值模拟[J].吉林大学学报:工学版, 2005, 35(3): 287-291.
Zhou Zhao-hui, Cai Zhong-yi, Li Ming-zhe.Stretching process based on multi-point die and its numerical simulation[J]. Journal of Jilin University (Engineering Science), 2005, 35(3): 287-291.
[6] Li X J, Zhang Z Q, Zheng Q F, et al.A study of basic mechanics in the multi-point single-point incremental combined forming of sheets metal[J]. Materials ResearchInnovations, 2015, 19(5): 385-388.
[7] 陈雪,李明哲,付文智,等. 基于多点模的板材柔性夹钳拉形夹持力[J]. 吉林大学学报:工学版, 2011, 41(1): 95-99.
Chen Xue, Li Ming-zhe, Fu Wen-zhi, et al.Clamping force of sheet metal flexible grippers stretch-forming based on multi-point die[J]. Journal of Jilin University (Engineering Science), 2011, 41(1): 95-99.
[8] Wiebengaa J H, Atzemab E H, van den Boogaardc A H.Stretching the limits of forming processes by robust optimization: a numerical and experimental demon- strator[J]. Journal of Materials Processing Technology, 2015, 217(5): 345-355.
[9] 王丽丽,李东升,李小强,等. 可重构柔性多点模具蒙皮拉形模面补偿算法[J]. 北京航空航天大学学报, 2011, 37(8): 1011-1015.
Wang Li-li, Li Dong-sheng, Li Xiao-qiang, et al.Die-face compensation algorithm in stretch forming of aircraft skin over reconfigurable compliant tooling[J]. Journal of Beijing University of Aeronautics and Astronautics, 2011, 37(8): 1011-1015.
[10] 张冬娟,崔振山,李玉强,等. 平面应变板料拉弯成形回弹理论分析[J]. 工程力学, 2007, 24(7): 66-71.
Zhang Dong-juan, Cui Zhen-shan, Li Yu-qiang, et al.Springback of sheet metal after plane strain Stretch-bending[J]. Engineering Mechanics, 2007, 24(7): 66-71.
[11] Paulsen Frode, Welo Torgeir.Application of numerical simulation in the bending of aluminum-alloy profiles[J]. Journal of Materials Processing Technology, 1996, 58(2): 274-285.
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