Results 1 to 10 of about 73,121 (297)

Angle of Repose and Angle of Marginal Stability: Molecular Dyanmics of Granular Particles [PDF]

Journal of Physics A: Mathematical and General, 1992
We present an implementation of realistic static friction in molecular dynamics (MD) simulations of granular particles. In our model, to break contacts between two particles, one has to apply a finite amount of force, determined by the Coulomb criterion.
Campbell C S, Clement E, Cundall P A, Devillard P, Dünweg B, Gallas J A C, H J Herrmann, Hong D C, J Lee, Jaeger H M, Laroche C, Liffman K, Pittman E B, Ristow G, Rosato A, Savage S B, Savage S B, Savage S B, Taguchi Y-H, Tildesley D J, Zik O   +20 more
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Angle of repose and segregation in cohesive granular matter [PDF]

Physical Review E, 2001
We study the effect of fluids on the angle of repose and the segregation of granular matter poured into a silo. The experiments are conducted in two regimes where: (i) the volume fraction of the fluid is small and it forms liquid bridges between ...
A. Castellanos, A. Kudrolli, A. Mehta, A. Samadani, A. Samadani, Azadeh Samadani, B.J. Persson, D.J. Hornbaker, G. McKinley, G.K. Batchelor, H.A. Makse, H.M. Jaeger, J. Bridgewater and, L. Bocquet, N. Fraysse, O. Pitois, P. Tegzes, R. Albert, R.M. Nedderman, S. Gaudet, S. Savage, T. Boutreax, T.C. Halsey, T.G. Mason, Y. Xu   +24 more
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DEM investigation of the influence of particulate properties and operating conditions on the mixing process in rotary drums: Part 1-Determination of the DEM parameters and calibration process [PDF]

, 2020
This paper's goal was to select methods and a calibration procedure which would lead to the determination of relevant parameters of a discrete element method (DEM) and virtual material creation.
Hlosta, Jakub, Jezerská, Lucie, Nečas, Jan, Rozbroj, Jiří, Zegzulka, Jiří, Žurovec, David   +5 more
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Wall effects on granular heap stability [PDF]

, 2002
We investigate the effects of lateral walls on the angle of movement and on the angle of repose of a granular pile. Our experimental results for beads immersed in water are similar to previous results obtained in air and to recent numerical simulations ...
, , B Perrin, Caponeri M., Duran J., Israelachvili J., Janssen H. A., Liu C., M Rabaud, P Gondret, S. Courrech du Pont, Van Burkalow A.   +11 more
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Jamming transition of a granular pile below the angle of repose

, 2003
We study experimentally the relaxation towards mechanical equilibrium of a granular pile which has just experienced an avalanche and discuss it in the more general context of the granular jamming transition.
Bertin, E. M., Dauchot, O., Deboeuf, S., Lajeunesse, E.   +3 more
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Dynamics at the angle of repose: jamming, bistability, and collapse

, 2004
When a sandpile relaxes under vibration, it is known that its measured angle of repose is bistable in a range of values bounded by a material-dependent maximal angle of stability; thus, at the same angle of repose, a sandpile can be stationary or ...
Anita Mehta, Bagnold R A, Brown R L, Donsker M D, Donsker M D, Edwards S F, J M Luck, Luck J M, Luck J M, Luczka J, Luczka J, Luczka J, Mehta A, Mehta A, Nagel S R, Reynolds O, Smoluchowski M V, van Kampen N G, Wang M C, Zwillinger D   +19 more
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DEM simulation of soil-tool interaction under extraterrestrial environmental effects [PDF]

, 2017
In contrast to terrestrial environment, the harsh lunar environment conditions include lower gravity acceleration, ultra-high vacuum and high (low) temperature in the daytime (night-time).
Arroyo Alvarez de Toledo, Marcos, Jiang, Mingjing, Rodríguez Dono, Alfonso, Xi, Banglu   +3 more
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Piling and avalanches of magnetized particles

, 2004
We performed computer simulations based on a two-dimensional Distinct Element Method to study granular systems of magnetized spherical particles. We measured the angle of repose and the surface roughness of particle piles, and we studied the effect of ...
D. E. Wolf, G. H. Ristow, J. Kertész, L. D. Landau, P. A. Cundall, S. Fazekas, S. Luding   +6 more
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Granular discharge and clogging for tilted hoppers

, 2009
We measure the flux of spherical glass beads through a hole as a systematic function of both tilt angle and hole diameter, for two different size beads.
C. Mankoc, C.E. Davies, C.R. Wassgren, C.S. Chang, C.S. O’Hern, C.T. Veje, Douglas J. Durian, F.C. Franklin, F.J. Muzzio, G.W. Baxter, H. Pacheco-Martinez, H.M. Jaeger, Hannah G. Sheldon, I. Zuriguel, I. Zuriguel, J. Choi, J. Duran, J.F. Wambaugh, K. Chen, K. Schick, M.L. Hunt, P. Evesque, R.M. Nedderman, R.M. Nedderman, S. Saraf, S.S. Manna, T. Raafat, U. Tuzun, W.A. Beverloo, X.l. Wu   +29 more
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Cross-sectional river shapes: A variational discharge-resistance formulation [PDF]

, 1999
Cross-sectional river shapes were obtained from a variational principle: minimizing the bed friction for a given discharge and a given maximum lateral bed slope (angle of repose).
Beckum, F.P.H. van, Groesen, E. van, Roos, P.   +2 more
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