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Communication Dans Un Congrès Année : 1993

New computation methods in granular dynamics

Résumé

The dynamics of collections of bodies, treated as perfectly rigid, involves nonsmooth mathematical relations, arising from the unilaterality of impenetrability constraints, from the formulation of dry friction and from the velocity jumps produced by possible collisions. The presented numerical methods treat nonsmoothness without resorting to regularization procedures. The examples shown concern populations of balls contained is a vertically vibrated rectangular box. First, a comparison is made with some experiments pe1formed by other authors, about the paradoxical shape taken by the free surface when vibration is not strong enough to fluidize it. Other examples reveal an unexpected mechanism of size segregation.
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Dates et versions

hal-01824750 , version 1 (27-06-2018)

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  • HAL Id : hal-01824750 , version 1

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Jean Jacques Moreau. New computation methods in granular dynamics. Powders & grains 93, Jul 1993, Birmingham, United Kingdom. pp.227-232. ⟨hal-01824750⟩
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