Journal of Jilin University(Engineering and Technology Edition) ›› 2019, Vol. 49 ›› Issue (4): 1272-1279.doi: 10.13229/j.cnki.jdxbgxb20180146

Previous Articles    

Trajectory design and FE simulation for profile stretch bending based on incremental control method

Xue⁃guang ZHANG1,2(),Ming⁃meng JIA3,Chun⁃guo LIU2,Guang⁃zhong HE1   

  1. 1. Engineering Planning and Development Department, CRRC Changchun Railway Vehicles Co. , Ltd. , Changchun 130051, China
    2. Rolling Forming Research Institute, Jilin University, Changchun 130022, China
    3. College of Automotive Engineering, Jilin Communication Polytechnic, Changchun 130012, China
  • Received:2018-02-04 Online:2019-07-01 Published:2019-07-16

RICH HTML

 1   

PDF (PC)

108

Abstract:

According to the structure of the stretch bending equipment and the loading condition, the loading capacity of the jaw is equated to the tensile strength of the drawing cylinder and rotation angle of the turning arm, and a trajectory design method for profile stretch bending based on incremental control is proposed. By dividing the target shape into several forming sections and calculating the tensile strength increment and rotation angle increment, the independent distribution and control of the loading capacity are realized. The Z-shaped stainless steel curved roof beam is selected as the research object. The profile stretch bending FE simulation model composed of connector units is established. The calculated loading increment is applied in predicting the forming effects of the workpiece, which realizes the parameterized regulation of the loading trajectory. The forming defect analysis and pertinent modification are conducted according to the shape error and the surface warpage in the simulation results, which improve the forming effects. The modified trajectory is adopted in the forming test, and the simulation results meet well with the experimental results.

Key words: material synthesis and processing technology, profile stretch bending, trajectory design, incremental control, numerical simulation

CLC Number: 

  • TG386

Fig.1

Schematic diagram of stretch?wrap bending machine"

Fig.2

Schematic diagram of load increment in forming section"

Fig.3

Target shape and cross?section size of workpiece"

Fig.4

Stretch bending FE model based on connector units"

Fig.5

Loading data of drawing cylinder and turning arm"

Fig.6

Forming effects of workpiece"

Fig.7

Loading data comparison of drawing cylinder and turning arm"

Fig.8

Movement trajectory comparison of profile end"

Table 1

Comparison of forming effects of workpiece"

轨迹 最大主应变 回弹后曲率/mm

表面翘曲

/mm

形状误差

/mm
大弧 小弧 大弧 小弧
原拉弯 0.033 0.273 7068.2 351.4 3.44 4.16
修正后 0.107 0.214 7024.0 350.9 1.09 1.34

Fig.9

Stretch bending experiment"

Fig.10

Experimental workpiece"

1 薛克仲 . 城市轨道车辆车体材料选择[J]. 城市轨道交通研究, 2003, 6(1): 14⁃19.
Xue Ke⁃zhong . Selection of car body materials for urban railway vechiles[J]. Urban Mass Transit, 2003, 6(1): 14⁃19.
2 王胜满 . 用于地铁车辆的不锈钢型材拉弯成形缺陷[J]. 吉林大学学报: 工学版, 2013, 43(6): 1546⁃1550.
Wang Sheng-man . Stretch bend forming defects of stainless steel profile of metro vechile[J]. Journal of Jilin University(Engineering and Technology Edition), 2013, 43(6): 1546⁃1550.
3 谷诤巍, 吕萌萌, 李欣, 等 . 数控拉弯工艺中型材变形量的影响因素[J]. 吉林大学学报:工学版, 2016, 46(4): 1190⁃1196.
Gu Zheng⁃wei , Meng⁃meng Lyu , Li Xin , et al . Influence factors of profile deformation in NC stretch bending[J]. Journal of Jilin University(Engineering and Technology Edition), 2016, 46(4): 1190⁃1196.
4 梁继才,李义,高嵩,等 .型材多点柔性拉弯成形回弹预测[J].吉林大学学报:工学版,2017,47(1):185⁃190.
Liang Ji⁃cai , Li Yi , Gao Song , et al . Springback prediction for multi⁃point 3D stretch bending profile[J]. Journal of Jilin University(Engineering and Technology Edition), 2017, 47(1): 185⁃190.
5 Yu C L , Li X Q . Theoretical analysis on springback of L⁃section extrusion in rotary stretch bending process[J]. Transactions of Nonferrous Metals Society of China, 2011, 21(12): 2705⁃2710.
6 王永军, 黄云华, 王俊彪, 等 . 数控转台拉弯机切点跟踪轨迹生成算法[J]. 机械工程学报, 2005, 41(10): 123⁃127.
Wang Yong⁃jun , Huang Yun⁃hua , Wang Jun⁃biao , et al . Algorithm of generating the tracking locus of the tangent point for NC rotary stretch-bending former[J]. Chinese Journal of Mechanical Engineering, 2005, 41(10): 123⁃127.
7 刘志军, 金朝海, 李东升, 等 . 基于 PSBPD 的 T 型材拉弯夹钳加载轨迹设计及有限元模拟[J]. 塑性工程学报, 2012, 19(6): 109⁃113.
Liu Zhi⁃jun , Jin Chao⁃hai , Li Dong⁃sheng , et al . PSBPD⁃based jaw trajectory design and numerical simulation for T⁃section profile during stretch⁃bending[J]. Journal of Plasticity Engineering, 2012, 19(6): 109⁃113.
8 Reinhard L . Coupling of bending and stretching deformation in vehicle members[J]. Advances in Colloid and Interface Science, 2014, 208(1):14⁃24.
9 李小强, 周贤宾, 金朝海, 等 . 基于有限元模拟的三维型材拉弯轨迹设计[J]. 航空学报, 2009, 30(3): 544⁃550.
Li Xiao⁃qiang , Zhou Xian⁃bin , Jin Chao⁃hai , et al . Design of stretch bending trajectory based on finite element simulation for three⁃dimensional profile parts[J]. Acta Aeronautica et Astronautica Sinica, 2009, 30(3): 544⁃550.
10 李小强, 周贤宾, 金朝海, 等 . 型材拉弯数值模拟夹钳边界条件的一种等效模型[J]. 塑性工程学报, 2009, 16(1): 64⁃69.
Li Xiao⁃qiang , Zhou Xian⁃bin , Jin Chao⁃hai , et al . An equivalent model of jaws boundary condition in numerical simulation of stretch bending for extrusions[J].Journal of Plasticity Engineering, 2009, 16(1): 64⁃69.
11 张学广, 刘纯国, 张石磊, 等 . 轴向非对称中空型材拉弯过渡区长度优化[J]. 哈尔滨工业大学学报, 2015, 47(10):85⁃87.
Zhang Xue⁃guang , Liu Chun⁃guo , Zhang Shi⁃lei , et al . Optimization of transition zone length in stretch bending of axially asymmetric hollow profiles[J]. Journal of Harbin Institute of Technology, 2015, 47(10): 85⁃87.
12 周苗苗, 王红建, 贺尔铭, 等 . 复杂截面型材3D拉弯数值模拟建模技术研究[J]. 机械科学与技术, 2012, 31(6): 888⁃892.
Zhou Miao⁃miao , Wang Hong⁃jian , He Er-ming , et al . Investion of numerical modeling techniques of 3D stretch bending for complex cross section[J]. Mechanical Science and Technology for Aerospace Engineering, 2012, 31(6): 888⁃892.
13 谷诤巍, 张文学, 吕萌萌, 等 . 宽翼边 U 型截面不锈钢型材拉弯成形缺陷控制[J]. 吉林大学学报: 工学版, 2017, 47(4): 1165⁃1170.
Gu Zheng⁃wei , Zhang Wen⁃xue , Meng⁃meng Lyu , et al . Stretch bending defect control of U-section stainless steel profile with wide flange[J]. Journal of Jilin University(Engineering and Technology Edition), 2017, 47(4): 1165⁃1170.
14 Sushanta G , Kashi N S . An experimental study on stress concentration around a hole under combined bending and stretching stress field[J]. Procedia Technology, 2016, 23(1): 20⁃27.
15 梁继业，邓钢，方斌 . L型截面铝型材拉弯成形截面畸变缺陷控制研究[J]. 锻压技术, 2016, 41(12): 42⁃45.
Liang Ji⁃ye , Deng Gang , Fang Bin . Section distortion control for L⁃section aluminium profile part in the strecth-bending process[J]. Foring and Stamping Tchnology, 2016, 41(12): 42⁃45.
16 刘天娇，王永军，夏晓娇，等 . 型材拉弯数值模拟轨迹建模方法[J]. 锻压技术, 2014, 39(7): 132⁃137.
Liu Tian⁃jiao , Wang Yong⁃jun , Xia Xiao⁃jiao , et al . Trajectory modeling of extrusion stretch bending simulation[J]. Forging and Stamping Technology, 2014, 39(7): 132⁃137.
[1] Hua ZHOU,Zhi⁃gang YANG,Hui ZHU. Aerodynamic calculation of MIRA model correlated with wind tunnel test [J]. Journal of Jilin University(Engineering and Technology Edition), 2019, 49(4): 1043-1053.
[2] Zhao⁃wei QU,Zhao⁃tian PAN,Yong⁃heng CHEN,Peng⁃fei TAO,Di SUN. Car⁃following model with improving safety distance based on optimal velocity model [J]. Journal of Jilin University(Engineering and Technology Edition), 2019, 49(4): 1092-1099.
[3] Xin LI,Dan WANG,Jun⁃xu CHEN,Yan⁃peng SUN,Zheng⁃wei GU,Hong XU. Numerical simulation for handbrake fixed plate forming [J]. Journal of Jilin University(Engineering and Technology Edition), 2019, 49(4): 1258-1265.
[4] GUO Hao-tian,XU Tao,LIANG Xiao,YU Zheng-lei,LIU Huan,MA Long. Optimization on thermal surface with rib turbulator inspired by turbulence of alopias' gill in simplified gas turbine transition piece [J]. Journal of Jilin University(Engineering and Technology Edition), 2018, 48(6): 1793-1798.
[5] GONG Ya-feng, WANG Bo, WEI Hai-bin, HE Zi-heng, HE Yu-long, SHEN Yang-fan. Surface subsidence law of double-line shield tunnel based on Peck formula [J]. Journal of Jilin University(Engineering and Technology Edition), 2018, 48(5): 1411-1417.
[6] QIU Yan-kai, LI Bao-ren, YANG Gang, CAO Bo, LIU Zhen. Characteristics and mechanism reducing pressure ripple of hydraulic system with novel hydraulic muffler [J]. 吉林大学学报(工学版), 2018, 48(4): 1085-1091.
[7] LIANG Xiao-bo, CAI Zhong-yi, GAO Peng-fei. Numerical simulation and experiment of cylindrical forming of sandwich composite panel [J]. 吉林大学学报(工学版), 2018, 48(3): 828-834.
[8] LIU Chun-guo, LIU Wei-dong, DENG Yu-shan. Effect of multi-point punch active loading path on the stretch-forming of sheet [J]. 吉林大学学报(工学版), 2018, 48(1): 221-228.
[9] FU Wen-zhi, LIU Xiao-dong, WANG Hong-bo, YAN De-jun, LIU Xiao-li, LI Ming-zhe, DONG Yu-qi, ZENG Zhen-hua, LIU Gui-bin. Multi-point forming process of 1561 aluminum alloy surfaces [J]. 吉林大学学报(工学版), 2017, 47(6): 1822-1828.
[10] LYU Meng-meng, GU Zheng-wei, XU Hong, LI Xin. Process optimization of hot stamping for anti-collision beam with ultra high strength [J]. 吉林大学学报(工学版), 2017, 47(6): 1834-1841.
[11] WANG Hui, ZHOU Jie, XIONG Yu, TAO Ya-ping, XIANG Rong. Springback compensation for stamping part with complex surface based on reverse engineering [J]. 吉林大学学报(工学版), 2017, 47(6): 1842-1847.
[12] WANG Chun-sheng, ZOU Li, YANG Xin-hua. Analysis of fatigue life factors of aluminum alloy welded joints based on neighborhood rough set theory [J]. 吉林大学学报(工学版), 2017, 47(6): 1848-1853.
[13] WANG Hong-chao, SHAN Xi-zhuang, YANG Zhi-gang. Numerical simulation of the influence of ground effect simulation on vehicle cooling system experiment in climate wind tunnel [J]. 吉林大学学报(工学版), 2017, 47(5): 1373-1378.
[14] WANG Guo-lin, SHEN Fei, ZHOU Hai-chao, YANG Jian. Evaluation of tyre pumping noise and design of low noise structure [J]. 吉林大学学报(工学版), 2017, 47(4): 1024-1031.
[15] GU Zheng-wei, ZHANG Wen-xue, LYU Meng-meng, WANG Wei, XU Hong, LI Xin. Stretch bending defect control of U-section stainless steel profile with wide flange [J]. 吉林大学学报(工学版), 2017, 47(4): 1165-1170.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
No Suggested Reading articles found!
Copyright © Journal of Jilin University(Engineering and Technology Edition), All Rights Reserved.
Tel: +86-431-85095297　Fax: +86-431-85094074　E-mail: xbgxb@jlu.edu.cn
Powered by Beijing Magtech Co. Ltd