Record Details

Numerical modelling of resistance spot welding of aluminium alloy

DSpace at IIT Bombay

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Title Numerical modelling of resistance spot welding of aluminium alloy
 
Creator DE, A
THADDEUS, MP
DORN, L
 
Subject nugget growth
resistance spot welding process
finite element modelling
coupled electrical-thermal-mechanical analysis
aluminium alloys
curved face electrode
 
Description An electro-thermal and mechanical coupled model is reported for analysing resistance spot welding process of aluminum alloys using curved face electrodes. An in-house software is developed based on finite element method that can predict in-process growth of nugget diameter, penetration and electrode-sheet contact diameter for different combinations of welding current, weld time, electrode force. Non-linear, temperature-dependent, thermo-physical material properties as well as latent heat of fusion/solidification have been considered. An exponential decay of initial contact resistance is considered with different values of initial contact resistance for different surface conditions of aluminium alloys. It is observed that the formation of weld nugget is completed within the very first cycle considering a 50 Hz AC power supply. Increase of welding current enhances the area of molten zone substantially. Change in the initial value of contact resistance does not influence the overall nugget zone significantly. Overall, the present work indicates that such a simulation model can be very useful as an off-line monitoring tool to estimate the influence of process parameters on the final weld dimensions.
 
Publisher IRON STEEL INST JAPAN KEIDANREN KAIKAN
 
Date 2011-08-04T06:04:58Z
2011-12-26T12:54:34Z
2011-12-27T05:42:39Z
2011-08-04T06:04:58Z
2011-12-26T12:54:34Z
2011-12-27T05:42:39Z
2003
 
Type Article
 
Identifier ISIJ INTERNATIONAL, 43(2), 238-244
0915-1559
http://dx.doi.org/10.2355/isijinternational.43.238
http://dspace.library.iitb.ac.in/xmlui/handle/10054/9267
http://hdl.handle.net/10054/9267
 
Language en