A Two-Relaxation-Time Lattice Boltzmann Model for Electron Beam Selective Melting Additive Manufacturing

Daoliang Chen; Wei Chen; Yanfei Liu; Dongke Sun

doi:10.3389/fmats.2022.885481

Frontiers in Materials (Apr 2022)

A Two-Relaxation-Time Lattice Boltzmann Model for Electron Beam Selective Melting Additive Manufacturing

Daoliang Chen,
Wei Chen,
Yanfei Liu,
Dongke Sun

Affiliations

Daoliang Chen: School of Mechanical Engineering, Southeast University, Nanjing, China
Wei Chen: Power Beam Processing Laboratory, AVIC Manufacturing Technology Institute, Beijing, China
Yanfei Liu: R and D Department, China Academy of Launch Vehicle Technology, Beijing, China
Dongke Sun: School of Mechanical Engineering, Southeast University, Nanjing, China

DOI: https://doi.org/10.3389/fmats.2022.885481
Journal volume & issue: Vol. 9

Abstract

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Electron beam selective melting is a rapidly developing additive manufacturing technology for industry and engineering. A two-relaxation-time lattice Boltzmann model is proposed to simulate melt flows and free surface dynamics in an EBSM additive manufacturing process. The model also describes the dynamics of solid-liquid phase change and heat transfer, and it is validated by several simulations of classical benchmarks. The model was applied to further simulate single and multiple tracks of electron beam selective melting on a single layer of powder bed and to analyze the influence of process parameters. The results demonstrate significant potentials of the present model for the study of additive manufacturing processes.

Published in Frontiers in Materials

ISSN: 2296-8016 (Online)
Publisher: Frontiers Media S.A.
Country of publisher: Switzerland
LCC subjects: Technology
Website: https://www.frontiersin.org/journals/materials

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