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Simulation of Selective Electron Beam Melting Processes: Lattice Boltzmann modeling of beam based additive manufacturing processes - Couverture souple

Attar, Elham

 
9783639377415: Simulation of Selective Electron Beam Melting Processes: Lattice Boltzmann modeling of beam based additive manufacturing processes
Couverture souple
ISBN 10 : 3639377419 ISBN 13 : 9783639377415
Editeur : VDM Verlag Dr. Müller, 2011

Synopsis

Metal powders are selectively molten layer by layer during Selective Electron Beam Melting (SEBM) processes. The density of the resulting material, the spatial resolution as well as the surface roughness of the completed components are complex functions of material and processing parameters. The purpose of this work is to achieve a better understanding of the beam based additive manufacturing process with the help of numerical simulations. A two-dimensional lattice Boltzmann model is developed to investigate melting and re-solidifying of a randomly packed powder bed under the irradiation of a Gaussian beam. Numerical simulations are presented where individual powder particles are considered. This approach makes many physical phenomena accessible which can not be described in a standard continuum picture. The potential of the proposed model to simulate the SEBM process is demonstrated by means of some examples for single tracks and multilayer parts. The simulation results are compared with experimental findings during SEBM. The comparison shows good agreement between simulation results and experiments.

Les informations fournies dans la section « Synopsis » peuvent faire référence à une autre édition de ce titre.

Présentation de l'éditeur

Metal powders are selectively molten layer by layer during Selective Electron Beam Melting (SEBM) processes. The density of the resulting material, the spatial resolution as well as the surface roughness of the completed components are complex functions of material and processing parameters. The purpose of this work is to achieve a better understanding of the beam based additive manufacturing process with the help of numerical simulations. A two-dimensional lattice Boltzmann model is developed to investigate melting and re-solidifying of a randomly packed powder bed under the irradiation of a Gaussian beam. Numerical simulations are presented where individual powder particles are considered. This approach makes many physical phenomena accessible which can not be described in a standard continuum picture. The potential of the proposed model to simulate the SEBM process is demonstrated by means of some examples for single tracks and multilayer parts. The simulation results are compared with experimental findings during SEBM. The comparison shows good agreement between simulation results and experiments.

Biographie de l'auteur

She is graduated in material science and engineering from Sharif University of Technology, Iran. In June 2011, she received her Dr.-Ing. from the University of Erlangen-Nuremberg, Germany. Her research interests include computational modeling of high temperature manufacturing processes.

Les informations fournies dans la section « A propos du livre » peuvent faire référence à une autre édition de ce titre.

Éditeur
VDM Verlag Dr. Müller
Date d'édition
2011
Langue
anglais
ISBN 10 
3639377419
ISBN 13 
9783639377415
Reliure
Broché
Nombre de pages
152
Coordonnées du fabricant
non disponible
Personne responsable
non disponible