GTAW耦合模型数值模拟研究进展

Research Progress of Numerical Simulation of GTAW Coupled Model

计算机技术的发展使焊接数值模拟技术成为人们研究电弧-熔池行为最重要的方式之一。在钨电极惰性气体保护焊(GTAW)仿真模拟过程中,为了准确描述电弧-熔池行为,需要构建相互耦合的数值模型。对模型中涉及的电弧物理特性进行了阐述,并将GTAW耦合模型总结为阴极-电弧耦合、阴极-电弧-熔池全耦合两种类型。综述了每种类型的优缺点,讨论现有方法的不足和未来的研究趋势。

With the development of computer technology,welding numerical simulation has become one of the most important ways to study arc-pool behavior.In the process of gas tungsten arc welding(GTAW)simulation,in order to accurately describe the arc-molten pool behavior,it is necessary to build a coupled numerical model.The physical properties of the arc involved in the model were expounded,and the coupling model of GTAW arc summed up as the cathode-arc coupling,cathode,arc and molten pool full coupling,the advantages and disadvantages of each type were reviewed and the shortcomings of existing methods and future research trends were discussed.