Journal of Jilin University(Engineering and Technology Edition) ›› 2023, Vol. 53 ›› Issue (8): 2212-2218.doi: 10.13229/j.cnki.jdxbgxb.20211086

Previous Articles    

Welding deformation and compensation method of B-pillar in body-in-white

Xiao ZHOU(),Yi-jie LIANG(),Zhong-xuan XI,Yu-tao WANG   

  1. Vor Serien Center，FAW-Volkswagen Automotive Co. ，Ltd. ，Changchun 130011，China
  • Received:2021-10-22 Online:2023-08-01 Published:2023-08-21
  • Contact: Yi-jie LIANG E-mail:xiao.zhou@faw-vw.com;yijie.liang@faw-vw.com

RICH HTML

 4   

PDF (PC)

413

Abstract:

In order to solve the matching and functional problems caused by the welding deformation of B-pillar in BIW （Body-In-White）， the whole welding process of B-pillar area is simulated based on the finite element （FEM） method， and the welding deformation of B-pillar is predicted， also the prediction accuracy is evaluated by means of test and measurement. The results show that the B-pillar welding deformation simulation based on FEM method has good prediction accuracy. Two welding pre-deformation control methods are proposed， one is compensated pre-bending with constant cross section， and the other is pre-bending with changed cross section. The pre-deformation is calculated by multi-objective optimization model. The two pre-deformation control methods are verified by FEM simulation. The results show that， both the two pre-deformation control methods can achieve the body size's tolerance meeting the design requirements， and the control accuracy of pre-bending with changed cross section is better than the method of compensated pre-bending with constant cross section.

Key words: welding process and equipment, welding deformation, B-pillar of body-in-white, pre-deformation control, multi-objective optimization

CLC Number: 

  • TG404

Fig.1

Material parameters of hot formed steel"

Table 1

Welding procedure parameters"

工序加工区域

焊接电流

I/A

预压力

F/N

加压时间

t/s

AB柱内板930040001000
B侧围内板83003500800
C主焊骨架83003500800

Fig.2

Schematic of welding points position"

Fig.3

Grid division of B-pillar"

Fig.4

Schematic of welding clamping position"

Fig.5

Prediction of welding deformation based on FEM"

Fig.6

Verification of welding deformation in y-direction by trial and measurement"

Fig.7

Schematic of pre-deformation compensation of B-pillar"

Fig.8

Schematic of pre-bending with constant cross section"

Fig.9

Section selection of pre-bending with constant section"

Table 2

Optimization target of pre-bending with constant section"

序号符号目标名称约束条件/mm
1δF前部法兰边y向尺寸一致性0.5
2δR后部法兰边y向尺寸一致性0.5
3δxi单截面前后法兰边尺寸一致性±0.3
4δs铰链面位置y向厚度尺寸±0.3

Table 3

Deformation data of B-pillar"

前部法兰边 变形量/mm后部法兰边 变形量/mm中间铰链面 变形量/mm
YF1=1.30YR1=1.83YS=0.58
YF2=1.10YR2∶1.75
YF3∶1.15YR3∶1.61
YF4∶0.77YR4∶0.86
YF5=0.32YR5=0.47

Table 4

Pre-bending dimension with constant section"

截面符号预弯量/mm
1dy11.54
2dy21.42
3dy31.12
4dy40.84
5dy50.40

Fig.10

Schematic of pre-bending with changed cross section"

Fig.11

Schematic of section selection of pre-bending with changed section"

Table 5

Pre-bending dimension with changed section"

截面符号预弯量/mm
1dy11.62
2dy21.49
3dy31.35
4dy40.82
5dy50.40
6dys0.58

Fig. 12

Effectiveness and accuracy verification of pre-deformation control method"

1 王庆, 刘钊, 黄平华, 等. 白车身激光焊接过程的变形预测及几何补偿方法[J]. 上海交通大学学报, 2019, 53(1): 62-68.
Wang Qing, Liu Zhao, Huang Ping-hua, et al. Distortion prediction and geometry compensation method for laser welding-induced distortion of body-in-white[J]. Journal of Shanghai Jiao Tong University, 2019, 53(1): 62-68.
2 黄平华, 郭志强, 王一栋, 等. 车身B柱零件焊接变形链式仿真的实现及应用[C]∥第十七届中国CAE工程分析技术年会论文集, 海南, 中国, 2021: 328-331.
3 董文超, 陆善平, 李殿中. 焊接顺序对大型薄板装甲钢结构焊接变形的影响[J]. 焊接学报, 2015, 36(7): 43-46.
Dong Wen-chao, Lu Shan-ping, Li Dian-zhong. Effect of welding sequence on welding distortion of large sized thin aasmor steel structure[J]. Transactions of China Welding Institution, 2015, 36(7): 43-46.
4 卢晶晶, 刑彦锋. 基于SYSWELD薄板焊接变形研究[J]. 热加工工艺, 2016, 45(11): 174-177.
Lu Jing-jing, Xing-Yan-feng. Study on welding deformation of thin plate using SYSWELD Software[J]. Hot Working Technology, 2016, 45(11): 174-177.
5 汪文芳. 轿车车身尺寸控制与夹具工艺设计分析[D].武汉: 武汉理工大学汽车工程学院, 2010.
Wang Wen-fang. Analysis of car body size control and fixture process design[D]. Wuhan: School of Automotive Engineering, Wuhan University of Technology, 2010.
6 汪建华, 陆皓, 魏良武. 固有应变有限元法预测焊接变形理论及其应用[J]. 焊接学报, 2002,23(6): 36-40.
Wang Jian-hua, Lu Hao, Liang-wu Wie. Theory and application of inherent strain finite element method in predicting welding deformation[J]. Transactions of China Welding Institution, 2002,23(6): 36-40.
7 李娅娜. 焊接变形预测与控制的数值方法研究及工程应用[D].大连: 大连交通大学机车车辆工程学院, 2010.
Li Ya-na. Research and engineering application on numerical method of welding deformation prediction and control[D]. Dalian: College of Locomotive and Rolling Stovk Engineering, Dalian Jiaotong University, 2010.
8 吴言高, 李午申, 邹宏军, 等. 焊接数值模拟技术发展现状[J]. 焊接学报, 2002, 23(3): 89-92.
Wu Yan-gao, Li Wu-shen, Zhou Hong-jun, et al. State-of-the-art of numerical simulation in welding[J]. Transactions of China Welding Institution, 2002, 23(3): 89-92.
9 Dean D, Hidekazu M. Numerical simulation of temperature field and residual stress in multi-pass welds in stainless steel pipe and comparison with experimental measurements[J]. Computational Materials Science, 2006, 37(3):269-277.
10 赵海燕, 吴骏巍, 陆向明, 等. 基于局部-整体有限元法的薄壁筒焊接变形计算[J]. 清华大学学报:自然科学版, 2017, 57(5): 449-453.
Zhao Hai-yan, Wu Jun-wei, Lu Xiang-ming, et al. Calculation of welding deformation of thin-walled tube based on local-global finite element method[J]. Journal of Tsinghua University (Natural Science Edition), 2017, 57(5): 449-453.
11 薛忠明, 顾兰, 张彦华. 激光焊接温度场数值模拟[J]. 焊接学报, 2003, 24(2): 79-82.
Xue Zhong-ming, Gu Lan, Zhang Yan-hua. Numerical simulation of temperature field in laser welding[J]. Transactions of China Welding Institution, 2003, 24(2): 79-82.
[1] Xin CHEN,Guan-chen ZHANG,Kang-ming ZHAO,Jia-ning WANG,Li-fei YANG,De-rong SITU. Influence of lap welds on the lightweight design of welded aluminum structures [J]. Journal of Jilin University(Engineering and Technology Edition), 2023, 53(5): 1282-1288.
[2] Hai-bo LONG,Jia-qi YANG,Liang YIN,Xue-yu ZHAO,Zi-quan XIANG. Multi-objective decision-making on emergency material distribution under uncertain demand based on robust optimization [J]. Journal of Jilin University(Engineering and Technology Edition), 2023, 53(4): 1078-1084.
[3] Ying HE,Jun-song FAN,Wei WANG,Geng SUN,Yan-heng LIU. Joint optimization of secure communication and trajectory planning in unmanned aerial vehicle air⁃to⁃ground [J]. Journal of Jilin University(Engineering and Technology Edition), 2023, 53(3): 913-922.
[4] Han-wu LIU,Yu-long LEI,Xiao-feng YIN,Yao FU,Xing-zhong LI. Multi⁃point control strategy optimization for auxiliary power unit of range⁃extended electric vehicle [J]. Journal of Jilin University(Engineering and Technology Edition), 2022, 52(8): 1741-1750.
[5] Zhao-ming CHEN,Jin-song ZOU,Wei WANG,Ming-quan SHI. Multi-objective optimization of casting-forging dynamic forming based on improved particle swarm neural network and finite element analysis [J]. Journal of Jilin University(Engineering and Technology Edition), 2022, 52(7): 1524-1533.
[6] Yong-jie MA,Min CHEN. Dynamic multi⁃objective optimization algorithm based on Kalman filter prediction strategy [J]. Journal of Jilin University(Engineering and Technology Edition), 2022, 52(6): 1442-1458.
[7] Bin-xiang JIANG,Tong-tong JIANG,Yong-lei WANG. Optimization of consensus algorithm for drug detection block chain based on cultural genetic algorithm [J]. Journal of Jilin University(Engineering and Technology Edition), 2022, 52(3): 684-692.
[8] Han HUANG,Qing-hao YAN,Zhi-xin XIANG,Xin-tao YANG,Jin-bao CHEN,Shu-cai XU. Crashworthiness investigation and optimization of bionic multi⁃cell tube based on shrimp chela [J]. Journal of Jilin University(Engineering and Technology Edition), 2022, 52(3): 716-724.
[9] Li-jie ZHANG,Xi-ta A,Xiao TIAN,Wen LI. Multi⁃objective optimization design of accelerated degradation test based on Gamma process [J]. Journal of Jilin University(Engineering and Technology Edition), 2022, 52(2): 361-367.
[10] Bao-feng SUN,Xin-xin REN,Zai-si ZHENG,Guo-yi Li. Multi⁃objective flow shop optimal scheduling considering worker's load [J]. Journal of Jilin University(Engineering and Technology Edition), 2021, 51(3): 900-909.
[11] Bing-hai ZHOU,Zhao-xu HE. Static semi⁃kitting strategy⁃based multi⁃objective just⁃in⁃time material distribution scheduling [J]. Journal of Jilin University(Engineering and Technology Edition), 2021, 51(3): 910-916.
[12] Ji-cheng HUANG,Cheng SHEN,Ai-min JI,Xian-wang LI,Bin ZHANG,Kun-peng TIAN,Hao-lu LIU. Optimization of cutting⁃conveying key working parameters of hemp harvester [J]. Journal of Jilin University(Engineering and Technology Edition), 2021, 51(2): 772-780.
[13] Bing-hai ZHOU,Qiong WU. Balancing and bi⁃objective optimization of robotic assemble lines [J]. Journal of Jilin University(Engineering and Technology Edition), 2021, 51(2): 720-727.
[14] Fang-wu MA,Li HAN,Liang WU,Jin-hang LI,Long-fan YANG. Damping optimization of heavy⁃loaded anti⁃vibration platform based on genetic algorithm and particle swarm algorithm [J]. Journal of Jilin University(Engineering and Technology Edition), 2020, 50(5): 1608-1616.
[15] Xue-shen CHEN,Tao CHEN,Tao WU,Xu MA,Ling-chao ZENG,Lin-tao CHEN. Design and experiment on harvester for winter planting potato of straw coverage [J]. Journal of Jilin University(Engineering and Technology Edition), 2020, 50(2): 749-757.
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