定点TIG焊接电弧与熔池交互耦合数值模拟

Stationary numerical simulation on coupling interaction between TIG welding arc and pool

摘要: 电弧与熔池的交互作用在两者之间形成了一个不断移动变化的自由界面,对界面的处理是实现电弧与熔池交互耦合的关键。运用建立的三维统一数学模型对TIG焊接电弧与熔池进行了动态耦合数值模拟,揭示电弧-熔池相互作用的机制以及电弧-熔池动态行为的基本规律。结果发现电弧与熔池不断交互耦合计算得出的熔池形状与试验测得的熔池形状比较吻合。

Abstract: A moving free interface is formed by interaction between welding arc and weld pool.How to deal with the interface is the key to realize coupling interaction between welding arc and pool.Basing on 3D united mathematical model,interaction between TIG welding arc and pool was numerically simulated in this paper.And the theory of interaction between arc and pool was revealled.The result showed that shape of the calculated weld pool was in agree with that of the experiment.