根据磁流体动力学理论以及焊接的实际情况,建立了三维TIG焊接电弧与熔池的统一数学模型,避免了对电弧以及熔池界面条件的假定,使得对焊接电弧与熔池行为的分析与实际情况更近了一步.运用该数学模型对TIG焊接电弧和熔池的流场和热场进行了有限元分析.采用等效比热法来确定液相分数,假定固液相等同区来解决工件熔化区与非熔化区的移动边界.结果表明:用数学模型模拟出的电弧行为特征以及熔池形状与试验结果相吻合.
参考文献
| [1] | Mckelliget J;Szekely J .Heat transfer and flow in the welding arc[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1986,17A(07):1139-1148. |
| [2] | Choo R T C;Szekely J;Westhoff R C .On the calculation of the free surface temperature of gas-tungsten-arc weld pools from first principles:part Ⅰ.modeling the welding arc[J].Metallurgical and Materials Transactions B:Process Metallurgy and Materials Processing Science,1992,23B:357-369. |
| [3] | Choo R T C;Szekely J;Westhoff R C .On the calculation of the free surface temperature of gas-tungsten-arc weld pools from first principles:part Ⅱ.modeling the weld pool and comparision with experiments[J].Metallurgical and Materials Transactions B:Process Metallurgy and Materials Processing Science,1992,23B:371-384. |
| [4] | H.G. Fan;H.L. Tsai;S.J. Nab .Heat transfer and fluid flow in a partially or fully penetrated weld pool in gas tungsten arc welding[J].International Journal of Heat and Mass Transfer,2001(2):417-428. |
| [5] | Wu C S .Computer simulation of three-dimensional convection in traveling MIG weld pool[J].Engineering Computations,1992,9:529-537. |
| [6] | Hsu K C;Etemadi K;Pfender E .Study of the free-burning high-intensity argon arc[J].Journal of Applied Physiology,1983,54(03):1293-1299. |
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