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Modeling of Gas Metal Arc Welding Process Using an Analytically Determined Volumetric Heat Source

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Title Modeling of Gas Metal Arc Welding Process Using an Analytically Determined Volumetric Heat Source
 
Creator SYED, AA
PITTNER, A
RETHMEIER, M
DE, A
 
Subject gas metal arc welding
heat conduction
volumetric heat source
experimental validation
PULSE PARAMETERS
FLUID-FLOW
SIMULATION
TRANSPORT
 
Description High peak temperature and continuous deposition of electrode droplets in the weld puddle inhibit real-time monitoring of thermal cycles and bead dimensions in gas metal arc welding. A three-dimensional numerical heat transfer model is presented here to compute temperature field and bead dimensions considering a volumetric heat source to account for the transfer of arc energy into the weld pool. The heat source dimensions are analytically estimated as function of welding conditions and original joint geometry. The deposition of electrode material is modeled using deactivation and activation of discrete elements in a presumed V-groove joint geometry. The computed values of bead dimensions and thermal cycles are validated with the corresponding measured results. A comparison of the analytically estimated heat source dimensions and the corresponding numerically computed bead dimensions indicate that the former could rightly serve as the basis for conduction heat transfer based models of gas metal arc welding process.
 
Publisher IRON STEEL INST JAPAN KEIDANREN KAIKAN
 
Date 2014-10-14T17:13:55Z
2014-10-14T17:13:55Z
2013
 
Type Article
 
Identifier ISIJ INTERNATIONAL, 53(4)698-703
http://dx.doi.org/10.2355/isijinternational.53.698
http://dspace.library.iitb.ac.in/jspui/handle/100/14540
 
Language en