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	Finite element analysis of effect of electrode pitting in resistance spot welding of aluminium alloy
	Chang, BH ; Zhou, Y ; Lum, I ; Du, D
	2010-05-10 ; 2010-05-10
关键词	resistance spot welding aluminium alloys electrode pitting finite element method experimental simulation ALUMINUM-ALLOY-5182 Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering
中文摘要	The effect of electrode pitting on the formation of the weld nugget in resistance spot welding of an aluminium alloy was investigated using the finite element method. Pitted electrodes were simulated by assuming a pre-drilled hole of varying diameter at the centre of the electrode tip surface. The results showed that a small pitting hole would not have a detrimental influence on the nugget size. The actual contact area at the electrode/sheet interface did not change significantly when the diameter of the pitting hole was increased. However, a large pitted area at the electrode tip surface resulted in a greatly increased contact area and hence reduced current density at the sheet/sheet interface, which in turn led to the formation of an undersized weld nugget. The numerical calculation of the nugget shape and dimensions agreed well with experimental observations.
语种	英语 ; 英语
出版者	MANEY PUBLISHING ; LEEDS ; HUDSON RD, LEEDS LS9 7DL, ENGLAND
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/23778]
专题	清华大学
推荐引用方式 GB/T 7714	Chang, BH,Zhou, Y,Lum, I,et al. Finite element analysis of effect of electrode pitting in resistance spot welding of aluminium alloy[J],2010, 2010.
APA	Chang, BH,Zhou, Y,Lum, I,&Du, D.(2010).Finite element analysis of effect of electrode pitting in resistance spot welding of aluminium alloy..
MLA	Chang, BH,et al."Finite element analysis of effect of electrode pitting in resistance spot welding of aluminium alloy".(2010).

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