非线性高斯体热源模型激光焊接数值模拟

Numerical Simulation of Laser Welding with Nonlinear Gaussian Body Heat Source Model

利用Fluent软件进行非线性路径激光焊接数值模拟,通过改进旋转高斯曲面体热源模型,设定热源纵向移动的距离是时间的函数,实现热源移动,设定热源横向移动的距离是振幅,实现热源摆动,完成非线性路径激光焊接过程的数值模拟。本文通过C语言编译UDF,建立以正弦函数为激光束移动路径的旋转高斯曲面体热源模型,实现了用Fluent软件进行非线性路径激光焊接温度场和流场数值的模拟。

Numerical simulation of nonlinear path laser welding is carried out by using Fluent software. By improving the heat source model of rotating Gaussian surface body, the distance of longitudinal movement of the heat source is set as a function of time, and the movement of the heat source is realized. The distance of lateral movement of the heat source is set as the amplitude. The heat source swings to complete the numerical simulation of the nonlinear path laser welding process. In this paper, the UDF is compiled by C language, and the heat source model of the rotating Gaussian surface body with the sine function as the moving path of the laser beam is established, and the numerical simulation of the temperature field and flow field of the laser welding with the nonlinear path is realized by Fluent software.