Revisiting the models of vibration screening process

Iliya I. Blekhman1, Leonid I. Blekhman2, Leonid A. Vaisberg3, Kirill S. Ivanov4

1, 2IPME RAS, St. Petersburg, Russia

3, 4REC “Mekhanobr-tekhnika”, St. Petersburg, Russia

1Corresponding author


(Accepted 2 September 2014)

Abstract. This talk presents two approaches for modeling of the vibration screening process. The first approach is analytical. It models the screening process as a diffusion of undersize fraction taking into account the special term for vibration separation (the Brazil nut effect). The talk provides a solution of the corresponding partial differential equation. The solution in turn allows estimation of the screening performance dependence on both deterministic and stochastic factors as well as evaluation of the factors dominance conditions. The talk presents simple evaluation formulae for the screening process performance. The second approach is based on a simulation model. The model deals with monolayer dynamics. Embodying traditional concepts of vibration transportation, the approach introduces some novel techniques of evaluation of the effect of the granular particles shape. Taking into account the particle shape factor may significantly improve the modeling precision for nonspherical particles.

Keywords: vibration screening, granular materials, particle shape.



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Plain text citation

Iliya I. Blekhman, Leonid I. Blekhman, Leonid A. Vaisberg, Kirill S. Ivanov Revisiting the models of vibration screening process. Vibroengineering PROCEDIA, Vol. 3, 2014, p. 169‑174.

Bibtex citation


 author  = {Iliya I. Blekhman, Leonid I. Blekhman, Leonid A. Vaisberg, Kirill S. Ivanov},

 title   = {Revisiting the models of vibration screening process},

 journal = {Vibroengineering PROCEDIA},

 year    = {2014},

 month   = {October},

 volume  = {3},

 pages   = {169--174},