Development of Non-Equilibrium Simulation Model of Gas Tungsten Arc

Tashiro Shinichi; Toru Iwao; Tuginori Inaba; Manabu Tanaka

doi:10.4028/www.scientific.net/MSF.580-582.659

Paper Titles

Analysis of Welding Residual Stress of Steel Pipes
p.637

Forefront in High Accurate Prediction of Welding Distortion in Japan
p.645

Development of Welding Distortion Analysis Method Using Residual Strain as Boundary Condition
p.649

Weldability Studies on the Replacement Repair Welded Joints of a Damaged Steel Bridge
p.655

Development of Non-Equilibrium Simulation Model of Gas Tungsten Arc
p.659

Fatigue Damage Model for Numerical Assessment of Fatigue Characteristics
p.663

Study of Weldability for Circularly Input Heat
p.667

Investigation of Soundness of Welds in Welding under Static and Cyclic Loading
p.671

Effects of Different R Ratios on Fatigue Crack Growth in Laser Peened Friction Stir Welds
p.675

HomeMaterials Science ForumMaterials Science Forum Vols. 580-582Development of Non-Equilibrium Simulation Model of...

Development of Non-Equilibrium Simulation Model of Gas Tungsten Arc

Abstract:

We have developed non-equilibrium simulation model of GTA. In this paper, simulation results of plasma property of argon GTA at atmospheric pressure are presented and, furthermore, the reliability of the simulation model is evaluated. As a result, it was revealed that non-equilibrium characteristic appears in regions close to both electrodes and the fringe of the arc column where the temperatures decrease below approximately 10000K. It was also found that non-equilibrium region near the anode surface has thickness of 0.3mm. This result agrees with the simulation result predicted with one-dimensional electrical sheath model.