Analytical and numerical modelling of the direct metal deposition laser process

The direct metal deposition (DMD) laser process is a novel technique, well adapted for aeronautical applications, that allows the building of complex 3D geometries through the interaction between a powder nozzle system and a continuous laser beam. A three-step analytical and numerical approach was c...

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Bibliographic Details
Published in:Journal of physics. D, Applied physics Applied physics, 2008-01, Vol.41 (2), p.025403-025403 (10)
Main Authors: Peyre, P, Aubry, P, Fabbro, R, Neveu, R, Longuet, A
Format: Article
Language:English
Subjects:
Applied sciences
Condensed Matter
Exact sciences and technology
Materials Science
Metals. Metallurgy
Physics
Powder metallurgy. Composite materials
Production techniques
Technology
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Summary:The direct metal deposition (DMD) laser process is a novel technique, well adapted for aeronautical applications, that allows the building of complex 3D geometries through the interaction between a powder nozzle system and a continuous laser beam. A three-step analytical and numerical approach was carried out to predict the shapes of manufactured structures and thermal loadings induced by the DMD process. First, powder temperature was calculated using a recent analytical model, then the geometry of walls was predicted by a combined numerical + analytical modelling using a discretization of the physical interaction domain, and finally, a finite element calculation was carried out on COMSOL 3.3 Multiphysics software to describe thermal behaviour during DMD of a titanium alloy.
ISSN:0022-3727
1361-6463
DOI:10.1088/0022-3727/41/2/025403