Numerical Simulation of Direct Metal Laser Sintering of Single-Component Powder on Top of Sintered Layers
Keyword(s):
A three dimensional model describing melting and resolidification of direct metal laser sintering of loose powders on top of sintered layers with a moving Gaussian laser beam is developed. Natural convection in the liquid pool driven by buoyancy and Marangoni effects is taken into account. A temperature transforming model is employed to model melting and resolidification in the laser sintering process. The continuity, momentum, and energy equations are solved using a finite volume method. Effects of dominant processing parameters including number of the existing sintered layers underneath, laser scanning velocity and initial porosity on the sintering process are investigated.
2008 ◽
Vol 130
(4)
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2006 ◽
Vol 129
(3)
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pp. 575-582
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Keyword(s):
2005 ◽
Vol 128
(1)
◽
pp. 299-306
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2014 ◽
Vol 903
◽
pp. 114-117
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2005 ◽
Keyword(s):
Keyword(s):