本文采用双椭圆表面热源模型,利用有限元分析软件ANSYS 对薄板GTAW 焊接三维非线性瞬态温度场进行了计算机模拟,得到了焊件的温度场的分布规律。并与工艺试验结果进行了比较,验证了模型的有效性。关键词:GTAW;温度场;数值模拟; ANSYSAbstract: A double elliptic distribution model of moving heat source was used ,and a finiteelement analysis soft of ANSYS was used to simulate a three dimensional non-linear transienttemperature field for GTAW of thin plate. The result is to obtain regulation of temperature field distribution in the weldment. It shows better fitness between the numerical solution andexperiment results.Keyword : GTAW , Temperature field; Numerical simulation; ANSYS
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