A numerical model, coupling radiative and conductive heat transfer in a polymer powder bed and providing a local temperature field, is proposed. To simulate the polymer sintering by laser heating as in additive manufacturing, a double-lines scanning of a laser beam over a thin layer of polymer powder is studied. An effective volumetric heat source, using a modified Monte Carlo method, is estimated from laser radiation scattering and absorption in a semi-transparent polymer powder bed. In order to quantify the laser-polymer interaction, the heating and cooling of the material is modeled and simulated with different types heat sources by both finite element method (FEM) and discrete element method (DEM). To highlight the importance of introducing the semi-transparent behavior of such materials and in order to validate our model, the results are compared with works of other researchers taken from literatures.
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ASME 2015 International Mechanical Engineering Congress and Exposition
November 13–19, 2015
Houston, Texas, USA
Conference Sponsors:
- ASME
ISBN:
978-0-7918-5746-5
PROCEEDINGS PAPER
Modeling the Radiative Heat Transfer in Selective Laser Sintering of Polymers: Scattering Effect Available to Purchase
Mhamed Boutaous,
Mhamed Boutaous
Université de Lyon, Villeurbanne, France
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Shihe Xin
Shihe Xin
Université de Lyon, Villeurbanne, France
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Xin Liu
Université de Lyon, Villeurbanne, France
Mhamed Boutaous
Université de Lyon, Villeurbanne, France
Shihe Xin
Université de Lyon, Villeurbanne, France
Paper No:
IMECE2015-50611, V07AT09A031; 12 pages
Published Online:
March 7, 2016
Citation
Liu, X, Boutaous, M, & Xin, S. "Modeling the Radiative Heat Transfer in Selective Laser Sintering of Polymers: Scattering Effect." Proceedings of the ASME 2015 International Mechanical Engineering Congress and Exposition. Volume 7A: Fluids Engineering Systems and Technologies. Houston, Texas, USA. November 13–19, 2015. V07AT09A031. ASME. https://doi.org/10.1115/IMECE2015-50611
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