A simplified surface heat source for gas metal arc welding (GMAW) process simulation based on the principle of evaporation determined arc cathode coupling (EDACC) is presented. It allows for a simple implementation in any GMAW weld pool simulation and is dependent on the width of the arc, as well as the weld pool surface temperature, but it can also be applied with the temperature and iron vapor density of the plasma instead of the width of the arc, if available. While it is considered separately from the droplets, it gives the heat flux as well as the current density distribution onto the weld pool surface, which are in general not axis-symmetric. The heat source distribution is normalized and multiplied to the value of any total heat and total current and it allows to calibrate for the maximum weld pool surface temperature. For the ionization and evaporation, only iron atoms are considered, and the shielding gas is assumed as argon. The result is given in graphical form as well as in the form of easy to implement functions for a reasonable range.

提出了一种基于蒸发确定电弧阴极耦合（EDACC）原理的用于气体金属电弧焊（GMAW）工艺模拟的简化表面热源。它允许在任何GMAW焊池模拟中实现简单的实施，并且取决于电弧的宽度以及焊池表面温度，但也可以将其与等离子的温度和铁蒸气密度一起应用，而不是使用弧的宽度（如果有）。尽管将其与熔滴分开考虑，但它会在焊池表面上产生热通量以及电流密度分布，通常这不是轴对称的。将热源分布归一化并乘以任何总热量和总电流的值，并可以针对最大焊池表面温度进行校准。对于电离和蒸发，仅考虑铁原子，并且将保护气体假定为氩气。结果以图形形式以及在合理范围内易于实现的功能形式给出。