Simulation of welding temperature distribution, stress and distortion in GTAW process for T-joint

Abstract

The Gas Tungsten Arc Welding (GTAW) process is widely used for
welding T-joints of aluminum alloy plate. This paper presents an
application of ANSYS software to simulate and predict T-joints’
temperature distribution, stress and distortion. The complication in
determining the heat source of fusion welding processes is fully provided
and considered in this study. A three-dimensional of T-joint fillet weld
was built and simulated by using ANSYS. Different welding conditions
are utilized during simulation to evaluate effect of each welding parameter
on temperature distributions, stresses and distortions. Results indicate that
the temperatures and stresses as well as distortion were increased as
welding current and voltage increase, and decreased as welding speed
increase. Therefore, the simulation can be applied to find primary optimal
welding parameters of GTAW for reducing defects and number of
welding experiments.