A comprehensive model is developed coupling major physical phenomena inherent to the Selective Laser Melting process together with a 3D numerical model based on the discrete element method to study the effect of the process parameters on the generation of balling droplets in the laser melting process. Effects of several process parameters as well as material properties on the balling phenomenon are investigated. Simulation results compare well to the experimental findings in the literature.

中文翻译：

---

基于金属激光的3D打印过程中的滚珠现象

建立了一个综合模型，该模型将选择性激光熔化过程固有的主要物理现象与基于离散元素方法的3D数值模型相结合，以研究工艺参数对激光熔化过程中球状液滴生成的影响。研究了几种工艺参数以及材料性能对球化现象的影响。仿真结果与文献中的实验结果进行了很好的比较。