Numerical Modeling of Silo Filling. II: Discrete Element Analyses
Publication: Journal of Engineering Mechanics
Volume 125, Issue 1
Abstract
During the last two decades, many attempts have been made to develop computational models to represent the behavior of particulate solids in silos. Two methods have been used most commonly: the finite element method and the discrete element method. In an attempt to compare the state of the art in the two methods and to make an unbiased assessment of their capabilities, this project has harnessed expertise from all over the world to compare predictions of a group of standardized problems concerning silos. The first of these problems was deemed the simplest: that of filling a silo or container with solid. The challenge was to determine the stress state in the solid and the resulting wall pressures. The problem description and continuum analysis results were presented and discussed in a companion paper. This paper summarizes the discrete element predictions. A comparison is also made between the discrete and continuum analyses. Finally, comments are made on the outcome of the project.
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References
1.
Cundall, P. A., and Strack, O. D. L. ( 1979). “A discrete numerical model for granular assemblies.” Geotechnique, 29, 46–65.
2.
Cundall, P. A. ( 1987). “Distinct element models of rock and soil structure.” Analytical and computational methods in engineering rock mechanics, E. T. Brown, ed., Allen and Unwin, London. 129–163.
3.
Holst, J. M. F. G., Ooi, J. Y., Rotter, J. M., and Rong, G. H. (1998). “Numerical modelling of silo filling. I: Continuum analyses.”J. Engrg. Mech., ASCE, 125(1), 94–103.
4.
ICG. ( 1995). (particle flow code in 2 dimensions), Version 1.1. Itasca Consulting Group Inc., Minneapolis, Minn.
5.
Janssen, H. A. ( 1895). “Versuche über Getreidedruck in Silozellen.” Zeitschrift des Vereins Deutscher Ingenieure, 39, 1045–1049.
6.
Johnson, K. L. ( 1985). Contact mechanics. Cambridge University Press, Cambridge, U.K.
7.
Langston, P. A., Heyes, D. M., and Tüzün, U. ( 1995). “Discrete element simulation of granular flow in 2D and 3D hoppers: Dependence of discharge rate and wall stress on particle interactions.” Chemical Engrg. Sci., 50, 967.
8.
Mindlin, R. D., and Deresiewicz, H. ( 1953). “Elastic spheres in contact under varying oblique loads.” J. Appl. Mech., ASME, 20, 327–344.
9.
Ooi, J. Y., Pham, L., and Rotter, J. M. ( 1990). “Systematic and random features of measured pressures on full-scale silo walls.” Engrg. Struct., 12, 74–87.
10.
Petrinic, N., Owen, D. R. J., Munjiza, A., and Bicanic, N. ( 1995). “Rolling resistance of disks in contact.” Extended abstracts for 3rd Conf. of Assoc. of Computational Methods in Engrg., Oxford, U.K., 105–110.
11.
Potapov, A. V., and Campbell, C. S. ( 1998). “A fast model for the simulation of non-round particles.” Granular Matter, 1, 9–14.
12.
Rothenburg, L., and Selvadurai, A. P. S. ( 1981). “A micromechanical definition of the Cauchy stress tensor for particulate media.” Mechanics of structured media (part B), A. P. S. Selvadurai, ed., Elsevier, London.
13.
Ting, J. M., Meachum, L. R., and Rowell, J. D. ( 1995). “Effect of particle shape on the strength and deformation mechanisms of ellipse shaped assemblages.” Engrg. Computations, 12, 99–108.
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Received: Jun 25, 1998
Published online: Jan 1, 1999
Published in print: Jan 1999
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