COHESIVE POWDER COMPACTION UNDER VIBRATIONS : SINGULAR BEHAVIOR AND ATTEMPT TO EXPLAIN

Jean-Eric Mathonnet (1) , Philippe Sornay (1) , Blanche Dalloz (2) , Maxime Nicolas (2)

1 LCU - Laboratoire des Combustibles Uranium
2 IUSTI - Institut universitaire des systèmes thermiques industriels

We report the influence of horizontal vibrations on the time-evolution of the density of a very cohesive powder. For a wide range of vibration conditions, the kinetics of compaction presents a two timescales behavior compared to model materials. A simple stochastic model, based on clusters of grains, has been developed to understand the compaction process, and a new empirical law is proposed to describe the evolution of the packing fraction φ.

Domaines: Mécanique des fluides [physics.class-ph]; Génie des procédés

Jean-Eric Mathonnet, Philippe Sornay, Blanche Dalloz, Maxime Nicolas. COHESIVE POWDER COMPACTION UNDER VIBRATIONS : SINGULAR BEHAVIOR AND ATTEMPT TO EXPLAIN. International Conference on Theoretical and Applied Mechanics (XXIV), Aug 2016, Montréal, Canada. ⟨hal-01432885⟩