锻压技术

先进高强度钢板DP590回弹试验及数值模拟研究

英文标题：Experimental research and numerical simulation of springback for advanced high-strength steel-DP590

作者：李贵柳玉起柯俊逸杜亭

单位：华中科技大学

分类号：TG386; TP391.9

出版年,卷(期):页码：2013,38(5):50-55

摘要：

回弹是高强钢板应用面临的主要问题之一，基于NUMISHEET 96的S_Rail标准考题制作试验模具，利用伺服压机的特点来研究保压时间、保压次数、压边力大小和镦死力大小等对先进高强度钢板DP590回弹的影响。实验结果表明，通过压边力和镦死力及保压次数可以使板料在厚度方向发生挤压变形，即强压负间隙可以有效的减小回弹。最后结合数值模拟方法研究比较CAE分析的单元类型对厚向挤压变形情况下的回弹模拟影响。BT壳单元无法模拟负间隙和强压的冲压工况，实体壳单元和实体单元都可以有效模拟强压和模具负间隙的情况，且具有相同的精度，但实体单元受单元数量的限制，其计算效率相对较低。因此实体壳单元更加适合强压负间隙条件下的高强钢板冲压有限元分析。

Springback is the most common defect in the application of advanced high-strength steel (AHSS) parts. Based on the NUMISHEET 96 S_Rail benchmark,a set of experimental die & mold was designed and made. Using the characteristics of servo press, the springback behavior of DP590 under different pressure holding time, holding times, blank holder force and locked force was investigated by experiment and simulation methods. The experimental results show that the blank extrusion deformation on the thickness direction under the extreme pressure conditions can reduce the springback effectively. Finally, combining the experiment and FEA methods, the effectiveness of FEM element types for extrusion deformation simulation was researched. BT shell element can not be used for extrusion deformation simulation. Solid shell and solid elements can effectively simulate the extrusion deformation and have the same accuracy, but the calculation efficiency of solid element is lower by the restriction of element number. Therefore, the solid shell element is more suitable for extreme pressure finite element analysis.

基金项目：

国家自然科学基金资助项目(No.51275184)；中央高校基础研究基金资助项目（HUST: 2012QN044）

李贵（1983-），男，博士研究生

参考文献：

［1］马宁, 申国哲, 张宗华, 等.高强度钢板热冲压材料性能研究及在车身设计中的应用[J]. 机械工程学报, 2011,47(8), 60-65.Ma N, Shen G Z, Zhang Z H, et al. Mechanical properties research of high strength steel on hot forming and its application in vehicle body design [J]. Journal of Mechanical Engineering, 2011, 47(8):60-65.
［2］康永林, 陈贵江,朱国明, 等. 新一代汽车用先进高强钢的成形与应用[J]. 钢铁, 2010, 45(8):1-6.Kang Y L, Chen G J, Zhu G M, et al. Forming technology and application of new generation advanced high strength steel for automobile [J]. Iron and Steel, 2010, 45(8):1-6.
［3］蒋浩民, 陈新平, 石磊, 等. 先进高强度钢板的冲压成形特性及其应用[J]. 塑性工程学报, 2009, 16(4):183-186.Jiang H M, Chen X P, Shi L, et al. Forming characteristics and application of advanced high strength steel [J]. Journal of Plasticity Engineering, 2009, 16(4):183-186.
［4］Wagoner R H, Lim H, Lee M G. Advanced issues in springback[J]. International Journal of Plasticity, 2013, 45:3-20.
［5］Wagoner R H. Advanced High Strength Steel Workshop[R]. Arlington, Virginia, USA, October 22-23, 2006, 1-122.

［6］Chen P, Koc M. Simulation of springback variation in forming of advanced high strength steels[J]. Journal of Materials Processing Technology, 2007, 190(1-3):189-198.[7]Lee S W, Yang D Y. An assessment of numerical parameters influencing springback in explicit finite element analysis of sheet metal formingprocess[J]. Journal of Materials Processing Technology, 1998, 80-81:60-67.
［8］Li K P, Geng L, Wagoner R H. Simulation of springback: choice of element[A]. Proceedings of the 6th ICTP[C]. Berlin, 1999.
［9］Yuen W Y D. Springback in the stretch-bending of sheet metal with non-uniform deformation[J]. Journal of Materials Processing Technology, 1990, (22):1-20.
［10］Tang S C. Analysis of springback in sheet forming operation[A]. Proceedings of the 6th ICTP[C]. Berlin,1987.
［11］Focellese L, Fratini F, Gabrielli M F. The evaluation of springback in 3D stamping and coining processes[J]. Journal of Materials Processing Technology, 1998, 80-81:108-112.
［12］Narasimhan N, Lovell M. Predicting springback in sheet metal forming:an explicit to implicit sequential solution procedure[J]. Finite Elements in Analysis and Design, 1999, 33(1):29-42.
［13］徐刚, 李建军, 付秀娟. 成形速度及载荷对高强钢板回弹影响的研究[J]. 锻压技术, 2012, 37(2):15-20.Xu G, Li J J, Fu X J, et al. Research on influence of forming speed and load on springback for high strength steel sheets [J]. Forging & Stamping Technology, 2012，37(2):15-20.
［14］单体坤, 李淑惠, 陈关龙. 变压边力下高强度钢板的回弹研究[J]. 塑性工程学报, 2005, 12(6): 57-58.Shan T K, Li S H, Chen G L. Research on springback of high strength sheet metal in variable blank-holder forces [J]. Journal of Plasticity Engineering, 2005, 12(6): 57-58.
［15］刘伟, 刘红生, 邢忠文, 等. 高强钢板冲压成形的回弹规律与工艺参数研究[J]. 材料科学与工艺, 2010, 18(6):758-761.Liu W, Liu H S, Xing Z W, et al. Study on process parameters and springback rule for stamping of high strength steel sheet[J]. Materials Science & Technology, 2010, 18(6):758-761.
［16］Chen P, Koc M, Wenner M L. Experimental Investigation of Springback Variation in Forming of High Strength Steels[J]. Journal of Manufacturing Science and Engineering, 2008, 130(4):041006.1-041006.9.
［17］Andersson A. Numerical and experimental evaluation of springback in advanced high strength steel[J]. Journal of Materials Engineering and Performance, 2007, 16(3):301-307.
［18］Mori K, Akita K, Abe Y. Springback behaviour in bending of ultra-high-strength steel sheets using CNC servo press[J]. International Journal of Machine Tools & Manufacture, 2007, 47(2):321-325.
［19］Karafillis A P, Boyce M C. Tooling design in sheet metal forming using springback calculations[J]. International Journal of Mechanical Sciences, 1992, 34(2):113-31.
［20］Gan W, Wagoner R H. Die design method for sheet springback[J]. International Journal of Mechanical Sciences, 2004, 46(7):1097-1113.
［21］夏敏, 向华, 庄新村, 等. 基于伺服压力机的板料成形研究现状与发展趋势[J]. 锻压技术, 2013, 38(2):1-5.Xia M, Xiang H, Zhuang X C, et al. Research status and development tendency of sheet metal forming using servo press [J]. Forging & Stamping Technology, 2013, 38(2):1-5.

服务与反馈：

【文章下载】【加入收藏】