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定点TIG焊接电弧与熔池交互耦合数值模拟
芦凤桂, 唐新华, 李少青, 姚舜, 楼松年
上海交通大学材料科学与工程学院, 上海 200030
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。
关键词:  自由界面  交互耦合  电弧与熔池  数值模拟
DOI:
分类号:
基金项目:
Stationary numerical simulation on coupling interaction between TIG welding arc and pool
LU Feng-gui, TANG Xin-hua, LI Shao-qing, YAO Shun, LOU Song-nian
School of Materials Science and Engineering, Shanghai Jiaotong University, Shanghai 200030, China
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.
Key words:  free interface  coupling interaction  welding arc and pool  numerical simulation