锻压技术

汽车梁辊压成形的数值模拟

英文标题：Numerical simulation on rolling for automobile beam

作者：郑帮智

关键词：辊压成形汽车梁速比回弹数值模拟

分类号：TG335.4+4

出版年,卷(期):页码：2019,44(10):94-100

摘要：

建立了汽车梁辊压成形数值仿真模型，利用能量法和试验法验证了数值仿真模型的可靠性。对两种工艺方案进行对比分析，结果表明：工艺方案1优于工艺方案2。通过提取成形板坯在各位置处的节点应力应变分布情况，分析了板坯在成形过程中的变形情况。结果表明：板坯底边不参与变形，板坯弯角处变形最大，应力达到531 MPa以上，材料发生塑性变形；板坯弯边处受微挤压作用，变形较小，应力分布在200～400 MPa之间，在屈服范围内。通过提取回弹前、后板坯横截面轮廓以及节点回弹量，并进行分析，结果表明，采用辊压成形技术进行汽车梁成形，其回弹量小于0.1 mm，完全满足生产要求。

Numerical simulation model of rolling for automobile beam was established, and the reliability of numerical simulation model was verified by energy method and experimental method. Comparing and analyzing the two process schemes, the result shows that the process scheme 1 is superior to the process scheme 2. By extracting the stress and strain distribution of the formed slab at each position, the deformation of the slab during the forming process was analyzed. The results show that the bottom edge of slab is not deformed, the deformation at the corner of slab is the largest, the stress reaches 531 MPa or more, and the material is plastically deformed. However, the deformation at the edge of slab affected by slight extrusion is small, and the stress distribution is between 200 and 400 MPa, which is within the yield range. Furthermore, through extracting and analyzing the cross-section profiles of the slab before and after springback and the amount of springback for nodes, the results show that the springback of automobile beam is less than 0.1 mm by rolling technology, and the production requirements are met fully.

基金项目：

作者简介：郑帮智（1988-），男，硕士，工程师 E-mail：zbz315@126.com

参考文献：

［1］王双枝, 杨谊丽, 朱梅云. 辊压成形工艺研究及在汽车行业中的应用
［J］. 金属加工, 2016，(17):10-13.

Wang S Z, Yang Y L, Zhu M Y. Roll forming process research and application in the automotive industry
［J］. Machinist Metal Forming, 2016，(17):10-13.

［2］杨雪, 王淑俊, 孙连福, 等. 汽车门槛冲压及辊压工艺对比
［J］. 金属加工：冷加工, 2017，(6):34-36.

Yang X, Wang S J, Sun L F, et al. Comparison of automobile door sill stamping and rolling process
［J］. Metal Working:Metal Cutting, 2017，(6):34-36.

［3］晏培杰, 王超. 高精度超高强钢长滑轨辊压制造技术
［J］. 精密成形工程, 2017,9(6):37-41.

Yan P J, Wang C. Roll forming of high precision long sliding rails with ultra-high strength steel
［J］. Journal of Netshape Forming Engineering, 2017,9(6):37-41.

［4］黄伟男, 向志凌, 吕进. 浅析辊压成形工艺在汽车门槛中的应用
［J］. 模具技术, 2018，(2):37-49.

Huang W N, Xiang Z L, Lyu J. Application of roll forming process in the production of car threshold
［J］. Die and Mould Technology, 2018，(2):37-49.

［5］张广泰, 杜祥哲, 尹东海,等. 底板导轨的辊压与冲压加工工艺比较
［J］. 锻压技术, 2017, 42(10):46-50.

Zhang G T, Du X Z, Yin D H, et al. Comparison of rolling and stamping processes for bottom plate guide
［J］. Forging & Stamping Technology, 2017, 42(10):46-50.

［6］黄玉龙. 高强钢方矩管辊压成形工艺
［J］. 锻压技术,2018,43(8):117-121.

Huang Y L. Rolling process of high strength steel rectangular tube
［J］. Forging & Stamping Technology, 2018,43(8):117-121.

［7］Fei H, Lei S, Hua X, et al. Key technologies of roll forming automobile components with AHSS
［J］. Baosteel Technical Research, 2013, 7(1):49-53.

［8］Feng G H, Pei Z, Zhang H L, et al. Numerical simulation and experimental study on interlock deformation for roll formed U-section steel piling
［J］. Journal of Iron & Steel Research, 2013, 20(11):41-45.

［9］Zhang H W, Guan Y P, Wu J L, et al. Transverse bending characteristics in U-channel forming of tailor rolled blank
［J］. Journal of Iron & Steel Research International, 2016, 23(12):1249-1254.

［10］Lu R H, Liu X H, Chen S D, et al. Springback behavior of tailor rolled blank in U-shape forming
［J］. Journal of Iron & Steel Research International, 2017, 24(8):787-794.

［11］庄茁，张帆，岑松,等.ABAQUS 非线性有限元分析与实例
［M］. 北京科学出版社, 2005.

Zhuang Z，Zhang F，Cen S，et al. ABAQUS Nonlinear Finite Element Analysis and Examples
［M］.Beijing: Science Press，2005.

［12］肖宏,木原谆二. 三维弹塑性接触边界元法对摩擦的处理
［J］. 工程力学, 1997, 14(4): 83-88.

Xiao H, Muyuan Z E. The fraction model for dimensional elasto-plastic contact boundary element method
［J］. Engineering Mechanics, 1997, 14(4): 83-88.

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