SIMULATION OF SPATTERS STICKING PHENOMENON IN LASER POWDER BED FUSION PROCESS USING THE SMOOTHED PARTICLE HYDRODYNAMICS METHOD

Lingbin Meng, Tao Sun, Tejesh Dube, Sugrim Sagar, Xuehui Yang, Jian Zhang, Jing Zhang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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 languageEnglish (US)
Title of host publicationAdvanced Manufacturing
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Electronic)9780791885550
DOIs
StatePublished - 2021
EventASME 2021 International Mechanical Engineering Congress and Exposition, IMECE 2021 - Virtual, Online
Duration: Nov 1 2021Nov 5 2021

Publication series

NameASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
Volume2A-2021

Conference

ConferenceASME 2021 International Mechanical Engineering Congress and Exposition, IMECE 2021
CityVirtual, Online
Period11/1/2111/5/21

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

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