Development and Application of Heat Source Modeling in GMA-Welding

Abstract

In a field of weld bead prediction, stress/strain analysis of GMA welding, a constant heat input which doesn't depend on time variance is generally used as a equivalent heat source due to a difficulty of analysis of arc phenomena. The accuracy of the bead prediction can be expected to improve by giving information on the arc length control of welding power source to the heat source model in real time.