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Journal articles
3D finite element simulation of TIG weld pool
Abstract : The aim of this paper is to propose a three-dimensional weld pool model for the
moving gas tungsten arc welding (GTAW) process, in order to understand the main factors
that limit the weld quality and improve the productivity, especially with respect to the welding
speed. Simulation is a very powerful tool to help in understanding the physical phenomena in
the weld process. A 3D finite element model of heat and fluid flow in weld pool considering
free surface of the pool and traveling speed has been developed for the GTAW process. Cast3M
software is used to compute all the governing equations. The free surface of the weld pool
is calculated by minimizing the total surface energy. The combined effects of surface tension
gradient, buoyancy force, arc pressure, arc drag force to drive the fluid flow is included in
our model. The deformation of the weld pool surface and the welding speed affect fluid flow,
heat flow and thus temperature gradients and molten pool dimensions. Welding trials study is
presented to compare our numerical results with macrograph of the molten pool.
https://hal-cea.archives-ouvertes.fr/cea-02284855
Contributor : Olivier Asserin <>
Submitted on : Thursday, June 3, 2021 - 4:00:22 PM
Last modification on : Friday, June 11, 2021 - 10:32:53 AM
Contributor : Olivier Asserin <>
Submitted on : Thursday, June 3, 2021 - 4:00:22 PM
Last modification on : Friday, June 11, 2021 - 10:32:53 AM
File
Kg1.pdf
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