Magnetohydrodynamic behaviors in a resistance spot weld nugget under different welding currents

被引：14
作者：
Li YongBing [1 ,2 ]
Lin ZhongQin [1 ]
Hu, S. Jack [2 ]
Chen GuanLong [1 ]
机构：
[1] Shanghai Jiao Tong Univ, Shanghai 200240, Peoples R China
[2] Univ Michigan, Ann Arbor, MI 48109 USA
来源：
SCIENCE IN CHINA SERIES E-TECHNOLOGICAL SCIENCES | 2008年 / 51卷 / 09期
基金：
中国国家自然科学基金;
关键词：
resistance spot welding; magnetic force; fluid flow; heat transfer;
D O I：
10.1007/s11431-008-0115-8
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Magnetohydrodynamic behaviors in a resistance spot weld nugget under different welding currents are investigated based on a multiphysics coupled numerical model, which incorporates phase change and variable electrical contact resistances at faying surface and electrode-workpiece contact surface. The patterns of the flow field and thermal field at the end of the welding phase under different welding currents are obtained. The evolutions of fluid flow and heat transfer during the whole welding process are also revealed systematically. The analysis results are also compared with a traditional electrothermal coupled model to obtain the quantitative effects of the magnetohydrodynamic behaviors on the resistance spot weld nugget formation.
引用
收藏
页码：1507 / 1515
页数：9
相关论文
共 20 条
  • [1] ALCINI WV, 1990, WELD J, V69, pS177
  • [2] CHO HS, 1989, WELD J, V68, pS236
  • [3] Finite element modelling of resistance spot welding of aluminium with spherical tip electrodes
    De, A
    [J]. SCIENCE AND TECHNOLOGY OF WELDING AND JOINING, 2002, 7 (02) : 119 - 124
  • [4] HOLM R, 1999, ELECT CONTACTS THEOR, P52908
  • [5] JIA RG, 2003, ELECTROMAGNETICS, P52908
  • [6] Numerical thermal model of resistance spot welding in aluminum
    Khan, JA
    Broach, K
    Kabir, AASA
    [J]. JOURNAL OF THERMOPHYSICS AND HEAT TRANSFER, 2000, 14 (01) : 88 - 95
  • [7] Prediction of nugget development during resistance spot welding using coupled thermal-electrical-mechanical model
    Khan, JA
    Xu, L
    Chao, YJ
    [J]. SCIENCE AND TECHNOLOGY OF WELDING AND JOINING, 1999, 4 (04) : 201 - 207
  • [8] Numerical simulation of resistance spot welding process
    Khan, JA
    Xu, LJ
    Chao, YJ
    Broach, K
    [J]. NUMERICAL HEAT TRANSFER PART A-APPLICATIONS, 2000, 37 (05) : 425 - 446
  • [9] Li YB, 2002, MODEL SIMUL MATER SC, V10, P781, DOI 10.1088/0965-0393/10/6/311
  • [10] LI YB, 2005, THESIS SHANGHAI JIAO, P52908
12