首页|Numerical Simulation of Radial Ultrasonic Assisted MIG Welding Arc
Numerical Simulation of Radial Ultrasonic Assisted MIG Welding Arc
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The numerical simulation of arc was carried out for both conventional melt inert gas(MIG)welding and ultrasonic assisted melt inert gas(U-MIG)welding.Based on the model established by Fluent,the arc shape,temperature field,and potential distribution were simulated.The study found that the shape of the arc changed when ultrasonic was added radially;the high-temperature area of the arc stretched,and the temperature peak increased.But as the current increased,the increase in temperature decreased.In addition,under the same conditions,the potential of U-MIG decreased and the pressure on the workpiece increased.To verify the accuracy of the simulation results,welding experiments under identical conditions were carried out,and a high-speed camera was used to collect dynamic pictures of the arc.The simulation results were in a favorable agreement with the experimental results,which provided a certain reference value for ultrasonic assisted arc welding.
numerical simulationwelding arcultrasonic arc weldingarc temperature
洪蕾、肖皓、叶佳、马国红
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Key Laboratory of Lightweight and High Strength Structural Materials of Jiangxi Province,School of Mechanical Engineering,Nanchang University,Nanchang 330031,China
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