Many models have been developed to model powder beds and these methods can be implemented to model a powder bed for Selective Laser Sintering, Selective Laser Melting and any other technique of additive manufacturing which uses powder beds. Two of the main systems are the Discrete Element Method (DEM) and the Geometric Method. The purpose of this paper is to analyze each of the methods. It will first highlight how each of the models creates the powder bed. The next aspect reviewed is the computational time and its causes. And lastly, each of the methods will be examined for their accuracy as shown from various experiments that have been reported in literature. In addition to these methods, there are several others that have been proposed that will also be studied and compared to highlight the strengths and weaknesses of each.

Meeting Name

26th Annual International Solid Freeform Fabrication Symposium -- An Additive Manufacturing Conference, SFF 2015 (2015: Aug. 10-12, Austin, TX)


Mechanical and Aerospace Engineering

Document Type

Article - Conference proceedings

Document Version

Final Version

File Type




Publication Date

12 Aug 2015

Included in

Manufacturing Commons