Hybrid 2D–3D modelling of GTA welding with filler wire addition

A hybrid 2D–3D model for the numerical simulation of Gas Tungsten Arc welding is proposed in this paper. It offers the possibility to predict the temperature field as well as the shape of the solidified weld joint for different operating parameters, with relatively good accuracy and reasonable compu...

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Bibliographic Details
Published inInternational journal of heat and mass transfer Vol. 55; no. 15-16; pp. 3946 - 3963
Main Authors Traidia, A., Roger, F., Guyot, E., Schroeder, J., Lubineau, G.
Format Journal Article
LanguageEnglish
Published Kidlington Elsevier Ltd 01.07.2012
Elsevier
Subjects
Applied sciences
Arc plasma
Exact sciences and technology
GTAW
Joining, thermal cutting: metallurgical aspects
Marangoni
Metals. Metallurgy
Multiphysics
Welding
Multiphysics
Arc plasma
GTAW
Welding
Marangoni
Energy balance
Three dimensional model
Thermal emissivity
Thermal cycle
Momentum
Two dimensional model
Hybrid model
Surface tension
Mathematical model
GTA welding
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Summary:A hybrid 2D–3D model for the numerical simulation of Gas Tungsten Arc welding is proposed in this paper. It offers the possibility to predict the temperature field as well as the shape of the solidified weld joint for different operating parameters, with relatively good accuracy and reasonable computational cost. Also, an original approach to simulate the effect of immersing a cold filler wire in the weld pool is presented. The simulation results reveal two important observations. First, the weld pool depth is locally decreased in the presence of filler metal, which is due to the energy absorption by the cold feeding wire from the hot molten pool. In addition, the weld shape, maximum temperature and thermal cycles in the workpiece are relatively well predicted even when a 2D model for the arc plasma region is used.
ISSN:0017-9310
1879-2189
DOI:10.1016/j.ijheatmasstransfer.2012.03.025