锻压技术

纵弧棱U型梁的冲压变形行为分析

英文标题：Analysis on stamping deformation behavior for U-shaped beam with longitudinal arc edge

作者：刘武静吕琳

分类号：TG386

出版年,卷(期):页码：2022,47(1):49-55

摘要：

针对高强钢纵弧棱U型梁类件的冲压成形问题，分析了纵弧棱U型梁成形件各个区域的冲压变形特点，再通过有限元分析总结了其成形过程的应力、应变分布情况和厚度变化规律，并结合模拟结果与物理试验探讨了该类零件在成形过程的减薄和增厚行为。验证结果表明：该梁类件的主要变形区为翼板区，且厚度从端部至中部逐渐减小；主要危险部位处于中部侧壁上与顶部圆角的连接处，最小厚度为0.833 mm，为制件质量的主要评估处，该处应变变化较大，其中厚度最大减薄量接近0.20 mm，易导致梁失效。研究结果对该类梁的成形工艺和模具设计具有参考价值。

For the stamping problem of U-shaped beam parts with longitudinal arc edges of high strength steel, the stamping deformation characteristics of each area for the U-shaped beam forming part with longitudinal arc edge were analyzed. Then, the stress and strain distributions and the thickness change laws of the forming process were analyzed by finite element, and its thinning and thickening behaviors in the forming process were explored by combining the simulation results and physical experiments. The verification results show that the main deformation area of the beam is the wing plate area, and the thickness gradually decreases from the end to the middle. The main dangerous area was at the junction of middle side wall and fillet at the top with the minimum thickness of 0.833 mm, which is the main assessment position for the quality of parts. In addition, the strain at this place changes greatly, and the maximum reduction amount of thickness is close to 0.20 mm, which is easy to cause failure of the beam. Thus, the research results have reference value for the forming process and die design for this type of beam.

基金项目：

重庆市应用开发资助项目（cstc2014yykfA60002）

作者简介：刘武静（1995-），男，硕士研究生 E-mail：liu415000267@163.com 通信作者：吕琳（1968-），女，硕士，教授 E-mail：lulin@cqut.edu.cn

参考文献：

[1]崔令江. 汽车覆盖件结构特征与冲压成形性[J].塑性工程学报,2001，8(2): 11-3.

Cui L J. Structural characteristics and stamping formability of automobile panels[J]. Journal of Plasticity Engineering, 2001，8 (2): 11-3.

[2]刘绪功. 基于特征的汽车覆盖件冲压成形性研究[D].南京：南京航空航天大学, 2005.

Liu X G. Research on Stamping Formability of Automobile Panels Based on Features[D]. Nanjing: Nanjing University of Aeronautics and Astronautics, 2005.

[3]高伟, 程万军,甄兴宇,等. 轿车非典型U形件冲压成形工艺及模拟研究[J].模具工业,2013,39(11):7-11.

Gao W, Cheng W J, Zhen X Y,et al. Study on the stamping process and simulation of atypical Ushaped parts for cars[J]. Die & Mould Industry, 2013, 39(11): 7-11.

[4]吕琳, 邓明,万舒,等.弧棱U型件的变形特点和回弹浅析[J].锻压技术,2015,40(7):34-37.

Lyu L, Deng M, Wan S, et al. Analysis on the deformation characteristics and springback of arcedge Ushaped parts[J]. Forging & Stamping Technology, 2015, 40(7): 34-37.

[5]高红兰. 轿车高强钢弧槽形件的精确成形研究[D].重庆：重庆理工大学,2019.

Gao H L. Research on Precise Forming of Highstrength Steel Arcshaped Parts for Cars [D]. Chongqing: Chongqing University of Technology, 2019.

[6]吕琳, 刘武静,高红兰. 纵弧棱U型梁的冲压回弹预测[J]. 塑性工程学报,2021,28(5):211-217.

Lyu L,Liu W J,Gao H L. Prediction of springback of longitudinal arc Ushaped beams[J]. Chinese Journal of Plasticity Engineering,2021,28(5):211-217.

[7]王鹏, 董湘怀.U型件冲压成形回弹过程的数值模拟及参数优化[J].上海交通大学学报,2007,41(10):1590-1593,1597.

Wang P, Dong X H. Numerical simulation and parameter optimization of the springback process of Ushaped parts stamping[J]. Journal of Shanghai Jiaotong University, 2007,41(10):1590-1593,1597.

[8]张茜, 刘淑影,牛星辉,等.基于Dynaform的DP600高强钢U形弯曲回弹影响因素研究[J].模具制造,2020,20(4):32-35.Zhang Q, Liu S Y, Niu X H,et al. Research on the influence factors of Ushaped bending springback of DP600 highstrength steel based on Dynaform[J]. Die & Mould Manufacturing, 2020, 20(4): 32-35.

[9]王东涛, 谢延敏,郭元恒,等. 基于Kriging模型的高强钢成形回弹工艺优化和模面补偿研究[J]. 锻压技术,2021,46(10):62-69.

Wang D T, Xie Y M, Guo Y H, et al. Research on the optimization of highstrength steel forming springback process and die face compensation based on Kriging model[J]. Forging & Stamping Technology,2021,46(10):62-69.

[10]孙伟, 王岩松,赵礼辉,等.基于响应面法的DP600高强钢U型件冲压拉延回弹变形研究[J].热加工工艺,2018,47(23):115-120.

Sun W, Wang Y S, Zhao L H, et al. Study on the springback deformation of DP600 highstrength steel Ushaped parts based on the response surface method[J]. Hot Working Technology, 2018, 47(23): 115-120.

[11]梁振业, 杨浩,肖华,等.强钢帽形件链模成形数值模拟[J].锻压技术,2020,45(7):103-106,116.

Liang Z Y, Yang H, Xiao H, et al. Numerical simulation of chain die forming of strong steel hatshaped parts[J]. Forging & Stamping Technology, 2020, 45(7): 103-106,116.

[12]章伊华, 侯培海. 高强钢T形接头焊接残余应力的数值模拟[J].机械工程师,2013,(6):93-95.

Zhang Y H, Hou P H. Numerical simulation of welding residual stress of highstrength steel Tjoint[J]. Mechanical Engineer, 2013,(6): 93-95.

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