Abstract
In this work, a smoothed particle hydrodynamics (SPH) method is developed to simulate the spattering phenomenon in the laser powder bed fusion (L-PBF) process. First, an experiment using the high-speed synchrotron X-ray full-field imaging is conducted to acquire in-situ images during the L-PBF process. Then, a scenario is selected from the X-ray image as a case study of the SPH model. In the case study, a particle is ejected and melted by the metal vapor, impacts with another particle, solidifies, and sticks to the other particle to form a rigid body. As a result, the trajectories of the two particles match well with the experimental observation. The evolution of velocity and temperature of the particle is extracted from the simulation for analysis. The SPH model can be a useful alternative to computational models of simulating the spattering phenomenon of L-PBF.
Original language | English (US) |
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Title of host publication | Advanced Manufacturing |
Publisher | American Society of Mechanical Engineers (ASME) |
ISBN (Electronic) | 9780791885550 |
DOIs | |
State | Published - 2021 |
Event | ASME 2021 International Mechanical Engineering Congress and Exposition, IMECE 2021 - Virtual, Online Duration: Nov 1 2021 → Nov 5 2021 |
Publication series
Name | ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE) |
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Volume | 2A-2021 |
Conference
Conference | ASME 2021 International Mechanical Engineering Congress and Exposition, IMECE 2021 |
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City | Virtual, Online |
Period | 11/1/21 → 11/5/21 |
Funding
The authors thank Drs. Cang Zhao and Niranjan Parab, who used to work at the APS, for their assistance in the X-ray experiment. This research used resources of the APS, a U.S. Department of Energy (DOE) Office of Science User Facility operated for the DOE Office of Science by Argonne National Laboratory (contract no. DEAC02-06CH11357).
Keywords
- Additive manufacturing
- High-speed synchrotron X-ray
- Smoothed particle hydrodynamics
- Spatter
- Sticking
ASJC Scopus subject areas
- Mechanical Engineering