[3G04-07] Advanced Simulation

[3G06] MPS simulation for a melt pool involving melting and resolidification

*Ziliang Zhang¹, Guangtao Duan¹, Mikio Sakai¹ (1. UTokyo)

Keywords:MPS Method, Heat-transfer, Phase-change, Melt Pool, Gas Pore, Additive Manufacturing

The melting and resolidification of powders play an important role in additive manufacturing and nuclear engineering. Defects such as gas pores may appear inside the finished part, probably due to the gaps among the powders. In this study, the melt pool due to a laser beam is simulated by a multiphase MPS method, where the heat-transfer and phase-change models are coupled. The influence of thickness of powder layers on the generation of gas pore is discussed.