TIG焊热源特性的反演分析

Inversion analysis of TIG welding heat source characteristic

采用反演分析法,结合软件ANSYS的参数化程序设计语言APDL,对TIG焊进行三维动态、非线性温度场模拟,得到熔池长度、熔宽和熔深等参数,与焊接实验得到的实际参数进行比较分析。利用直接反演分析方法,对比模拟得到的TIG焊接中热源集中系数的取值范围与由实验确定的数值,来验证实验数据的准确性,为提高数值模拟精度,深入了解焊接过程热、应力本质提供依据。

Using inverse analysis ,and combined with the software ANSYS parametric programming language APDL, three dimensional dynamic and nonlinear temperature field simulation of TIG welding is carried out, and the parameters such as length, width and depth of the weld pool are obtained, compared with the actual parameters of welding experiment. Using direct inverse analysis method, compare the scale of heat source focus modulus data in simulation count with the data in experiment,validate the experiment data＇s veracity,offer a foundation to deeply research heat and stress of welding.