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Abstract：
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The forming ability of 6061 aluminum alloy sheet material at room temperature was studied to provide a theoretical reference for engineering applications by the combination of experiment and numerical simulation, and the limit drawing ratio LDR obtained by Dynaform finite element simulation was highly consistent with the LDR of 1.67 for material in physical experiment. The experiments show that the maximum thinning rate of material increases continuously with the increasing of stamping speed and blank holder force, and the maximum thickening rate gradually decreases with the increasing of stamping speed and blank holder force. Furthermore, the thickness change curve obtained by the finite element simulation shows that the thicknesses of cylindrical part in the straight wall area and the bottom area do not change significantly, and the closer to the punch fillet is, the greater the change of thinning rate is. In addition, the thinning rate increases with the increasing of blank diameter, which is consistent with the change trend of data measured at the thickness tracking points in the longitudinal section of drawing part. Thus, it shows that under the same conditions, the Dynaform finite element simulation has certain guiding significance for stamping of aluminum alloy.
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Funds：
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国家自然科学基金资助项目（51805315）
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AuthorIntro：
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仇建桐（1992-），男，硕士研究生，E-mail：qiujt0216@163.com；通讯作者：邓沛然（1970-），男，博士，讲师，E-mail：peirandeng@126.com
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Reference：
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[1]关绍康, 姚波,王迎新.汽车铝合金车身板材的研究现状及发展趋势[J].机械工程材料,2001,25(5):12-14.
Guan S K, Yao B, Wang Y X. The progress and prospect of research on aluminium alloys for auto body sheets [J]. Materials for Mechanical Engineering, 2001,25(25):12-14.
[2]王孟君, 甘春雷.6061铝合金低温快速流变行为的研究[J].金属热处理,2003,28(6):16-18.
Wang M J, Gan C L. Highspeed flow behavior of 6061 aluminium alloy at low temperature [J]. Heat Treatment of Metals, 2003, 28(6):16-18.
[3]Pikett A K, Pyttel T, Payen F. Failure prediction for advanced crashorthiness of transportation vehicles[J].International Journal of Impact Engineering,2004,30:853-872.
[4]彭晓东, 李玉兰,刘江.轻合金在汽车上的应用[J].机械工程材料,1999,23(2):1-4.
Peng X D, Li Y L, Liu J. The applications of light alloys to automotive industry[J]. Materials for Mechanical Engineering, 1999, 23(2):1-4.
[5]朱晶, 杜坤,贾维平,等.5052铝合金板材室温冲压成形性能研究[J].热加工工艺,2015,44(19):1-4.
Zhu J, Du K, Jia W P, et al. Research on stamping formability of 5052 aluminum alloy sheet at room temperature [J]. Hot Working Technology,2015,44(19):1-4.
[6]Birk A M. Review of expanded aluminum products for explosion in containers holding flammable liquids and gases [J].Journal of Loss Prevention in the Process Industries，2008, 21(5): 493-505.
[7]Mallick P K. Materials，Design and Manufacturing for Lightweight Vehicles[M]. Florida: CRC Press, 2010.
[8]Nargess S. Lightening the material[J].Automotive Engineering,2003,31(9):70-71.
[9]模具实用技术丛书编委会. 冲模设计应用实例[M]. 北京:机械工业出版社, 2000.
Editorial Board of the Mould Practical Technology Series. Application Example of Mould Design [M]. Beijing: China Machine Press,2000.
[10]陈新平, 蒋浩民.汽车钢板胀形区成形极限图的预测与验证[J].精密成形工程,2003,21(6):86-88.
Chen X P, Jiang H M. The prediction and validation of bulging region of forming limit diagram (FLD) of steel sheet [J]. Journal of Netshape Forming Engineering, 2003, 21(6):86-88.
[11]陈新平, 汪学璞.一种预测左半部成形极限图的简单方法[J]. 金属成形工艺, 2000,18(4):4-7.
Chen X P, Wang X P. Approach for predicting the limit draw strain of the forming diagram [J]. Metal Forming Technology, 2000, 18(4):4-7.
[12]GB/T 15825.3—2008，金属薄板成形性能与试验方法第3部分：拉深与拉深载荷试验 [S].
GB/T 15825.3—2008，Sheet metal formability and test methods—Part 3: Drawing and drawing load test [S].
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