0
Research Papers

Numerical Simulation of Random Packing of Spherical Particles for Powder-Based Additive Manufacturing

[+] Author and Article Information
Jianhua Zhou, J. K. Chen

Department of Mechanical and Aerospace Engineering, University of Missouri, Columbia, MO 65211

Yuwen Zhang1

Department of Mechanical and Aerospace Engineering, University of Missouri, Columbia, MO 65211zhangyu@missouri.edu

1

Corresponding author.

J. Manuf. Sci. Eng 131(3), 031004 (Apr 30, 2009) (8 pages) doi:10.1115/1.3123324 History: Received February 14, 2008; Revised March 28, 2009; Published April 30, 2009

Powder-based additive manufacturing is an efficient and rapid manufacturing technique because it allows fabrication of complex parts that are often unobtainable by traditional manufacturing processes. A better understanding of the packing structure of the powder is urgently needed for the powder-based additive manufacturing. In this study, the sequential addition packing algorithm is employed to investigate the random packing of spherical particles with and without shaking effect. The 3D random packing structures are demonstrated by illustrative pictures and quantified in terms of pair distribution function, coordination number, and packing density. The results are presented and discussed aiming to produce the desirable packing structures for powder-based additive manufacturing.

FIGURES IN THIS ARTICLE
<>
Copyright © 2009 by American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Figure 1

Several geometrical configurations during the rolling of spheres: (a) incoming sphere is rolling down on one sphere, (b) incoming sphere is rolling down on two spheres, (c) incoming sphere is supported by three spheres and the support is stable, and (d) incoming sphere is supported by three spheres but the support is unstable

Grahic Jump Location
Figure 2

Stabilization judgment when the incoming sphere is in contact with three spheres deposited earlier

Grahic Jump Location
Figure 3

Flowchart of the sequential addition algorithm

Grahic Jump Location
Figure 4

Packing density and coordination number for monosized packing

Grahic Jump Location
Figure 5

Packing structure for equal size distribution: (a) 3D view, (b) 2D cross-sectional view at the plane y=0.5ymax

Grahic Jump Location
Figure 6

Packing structure for bimodal size distribution: (a) 3D view, (b) 2D cross-sectional view at the plane y=0.5ymax

Grahic Jump Location
Figure 7

Distribution of the coordination number per particle

Grahic Jump Location
Figure 8

Pair distribution function for bimodal distribution packing

Grahic Jump Location
Figure 9

Effects of different population ratios (n1/n2) on the coordination number distribution and pair distribution function

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In