About this Abstract |
Meeting |
6th International Congress on 3D Materials Science (3DMS 2022)
|
Symposium
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6th International Congress on 3D Materials Science (3DMS 2022)
|
Presentation Title |
Global Local Modeling of Bead Formation and Geometry in Laser Bed Powder Melting Process Using a Comprehensive Multi-physics Simulation |
Author(s) |
Faiyaz Ahsan, Jafar Razmi, Leila Ladani |
On-Site Speaker (Planned) |
Faiyaz Ahsan |
Abstract Scope |
Laser powder bed fusion (LPBF) is a state-of-the-art manufacturing process which involves rapid heating of the powder bed by the laser heat source and subsequent flow of fluid around melt pool. This work aims to assess the impact of various process parameters like laser power, scan speed, layer thickness etc. on the shape and geometry of the solidified bead from melt pool, which dictate the final build property and establish a relation between them to optimize the process, leading towards optimum bead geometry shapes pertaining to improved properties of the final build. The computational model will be validated by comparing the result with experiment. This work also attempts to calculate the convective heat transfer coefficient around melt pool region during LPBF process. Marangoni convection, recoil pressure and buoyancy force will be included to properly simulate the heat transfer coefficient along with non-gaussian beam to model the laser-powder interaction. |
Proceedings Inclusion? |
Definite: Other |