TY - JOUR A1 - Syed, A.A. A1 - Pittner, Andreas A1 - Rethmeier, Michael A1 - De, A. T1 - Modeling of gas metal arc welding process using an analytically determined volumetric heat source T2 - ISIJ international N2 - 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. PB - ISIJ KW - Gas metal arc welding KW - Heat conduction KW - Volumetric heat source KW - Experimental validation PY - 2013 UR - https://opus4.kobv.de/opus4-bam/frontdoor/index/index/docId/28074 AN - OPUS4-28074 SN - 0915-1559 SN - 1347-5460 VL - 53 IS - 4 SP - 698 EP - 703 AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany