Transactions of Materials and Heat Treatment

Title：Simulation and experiment research on chain-die forming of EV seat beam

Authors： Liu Yang1 Zou Tianxia1 Liang Zhenye1 Qian Zhen2 Li Dayong1 Xiao Hua3 4 Shi Lei3 4 Zhou Guowei5

Unit： 1. State Key Laboratory of Mechanical System and Vibration Shanghai Jiao Tong University 2. School of Mechanical and Mining Engineering University of Queensland 3. Research Institute Baoshan Iron ＆ Steel Co. Ltd. 4. State Key Laboratory of Development and Application Technology of Automotive Steels (Bao Steel) 5. School of Naval Architecture Ocean and Civil Engineering Shanghai Jiao Tong University

KeyWords： ultra-high strength steel chain-die forming EV seat beam wrinkle dimensional accuracy

ClassificationCode：TG335

year,vol(issue):pagenumber：2022,47(9):51-57

Abstract：

In order to solve the problems of many forming defects and low dimensional accuracy for the seat beam of ultra-high strength steel by traditional thin sheet forming process, a two-pass chain-die forming process scheme was proposed, and the corresponding finite element model was established by Abaqus/Standard. Then, the strain distribution, forming load and section shape of part during the chain-die forming process were analyzed. The simulation results show that there are no wrinkles and cracks on the part after chain-die forming, and the dimensions of the transverse and longitudinal sections for the part are relatively consistent with the target. Based on the exiting chain-die forming unit, the two-pass chain-die forming experiment of EV seat beam was carried out, and the key dimensions of formed parts were measured. The dimensional deviation of flange outer contour is less than ±0.5 mm, which meets the requirement of welding. The research results show that the chain-die forming process can form variable-section beam parts of ultra-high strength steel body at room temperature, which is helpful to promote its application in the ultra-high strength steel market.

Funds：

国家自然科学基金资助项目（U1860110）

刘洋（1997-），男，博士研究生 E-mail：liuyang0312@sjtu.edu.cn 通信作者：李大永（1973-），男，博士，教授 E-mail：dyli@sjtu.edu.cn

Reference：

[1]田凯. 电动汽车碳纤维复合材料保险杠防撞梁轻量化设计 [D]. 长春: 吉林大学, 2018.

Tian K. Lightweight Design of Carbon Fiber Composite Bumper Impact Beam for Electric Vehicles [D].Changchun: Jilin University, 2018.

[2]刘清梅, 封娇洁. 汽车轻量化条件下先进高强钢的发展及现状[J]. 轧钢, 2020, 37 (4): 65-70, 90.

Liu Q M, Feng J J. Development and current situation of advanced high-strength steel under the condition of automobile light weight[J]. Steel Rolling, 2020, 37 (4): 65-70, 90.

[3]裴永生, 张世哲, 孟宁. QP980超高强钢A柱补强板冲压成形性能分析[J]. 锻压技术, 2020, 45 (12): 28-33.

Pei Y S, Zhang S Z, Meng N. Stamping formability analysis of QP980 ultra-high strength steel A-pillar reinforcement plate [J]. Forging & Stamping Technology, 2020, 45 (12): 28-33.

[4]Zhang Y K, Ding S C. Parametric study on chain-die forming for advanced high strength steels [J]. International Journal of Materials and Product Technology, 2013, 47(1/2/3/4): 138-149.

[5]Sun Y, Li Y G, Liu Z B, et al. Experimental investigation and prediction of the maximum edge longitudinal membrane strain and springback of Chain-die-formed AHSS U-channels using response surface methodology [J]. International Journal of Advanced Manufacturing Technology, 2017, 90(5-8): 1963-1976.

[6]Li Y G, Liang Z Y, Zhang Z H, et al. An analytical model for rapid prediction and compensation of springback for chain-die forming of an AHSS U-channel [J]. International Journal of Mechanical Sciences, 2019, 159: 195-212.

[7]黄慧琳, 李亚光, 丁士超, 等. 高强度U型槽钢链模成形有限元仿真分析 [J]. 塑性工程学报, 2017, 24(6): 8-13.

Huang H L, Li Y G, Ding S C, et al. Finite element simulation of chain-die forming for U-profiled advanced high strength steel products [J]. Journal of Plasticity Engineering,2017,24 (6): 8-13.

[8]梁振业, 杨浩, 肖华, 等. 先进高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 on the chain-die forming of hat-shaped part for advanced high strength steel [J]. Forging & Stamping Technology, 2020, 45(7): 103-106, 116.

[9]Sun Y G, Li Y G, Daniel W J T, et al. Longitudinal strain development in Chain-die forming AHSS products: Analytical modelling, finite element analysis and experimental verification [J]. Journal of Materials Processing Technology, 2017, 243: 322-334.

[10]李亚光, 李大永, 丁士超, 等. 先进高强钢U型件链模成形缺陷机理分析及影响因素研究 [J]. 锻压技术, 2019, 44(7): 62-71.

Li Y G, Li D Y, Ding S C, et al. Research on defect mechanism and influential factors in chain-die forming for U-shaped part of advanced high strength steel [J]. Forging & Stamping Technology,2019, 44(7): 62-71.

[11]Qian Z, Wang C, An K, et al. Investigation of the forming load in the chain-die forming process [J]. Journal of Manufacturing Processes, 2019, 45: 70-82.

[12]Li Y G, Sun Y, Huang H L, et al. Finite element simulation of chain-die forming U profiles with variable cross-section [J]. Materials Science Forum, 2017, 4502: 1177-1182.

[13]Sun Y, Qian Z, Daniel W J T, et al. Analytical and numerical analyses of the longitudinal plastic strain and web-warping in Chain-die-formed AHSS sections with variable widths [J]. The International Journal of Advanced Manufacturing Technology, 2017, 92(1-4): 1147-1164.

[14]尤彬波, 林楷,谢育涛,等. A柱加强板热成形拐角开裂起皱优化[J]. 锻压技术,2021,46(3):105-110.

You B B，Lin K，Xie Y T，et al. Optimization on wrinkle and crack at corner of A-pillar reinforcement panel in thermoforming [J]. Forging & Stamping Technology，2021,46(3):105-110.

[15]李仁威, 左治江,李涵,等. 基于双目视觉及激光测量融合的冲压件在线尺寸测量[J]. 锻压技术,2021,46(12):203-209.

Li R W，Zuo Z J，Li H，et al. On-line dimension measurement of stamping parts based on fusion of binocular vision and laser measurement [J]. Forging & Stamping Technology，2021,46(12):203-209.

Service：

【This site has not yet opened Download Service】【Add Favorite】