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

页码：1507 / 1515

页数：9

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