Reference : The influence of grain shape, friction and cohesion on granular compaction dynamics
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Chemistry
Physical, chemical, mathematical & earth Sciences : Physics
Engineering, computing & technology : Materials science & engineering
http://hdl.handle.net/2268/18069
The influence of grain shape, friction and cohesion on granular compaction dynamics
English
Vandewalle, Nicolas mailto [Université de Liège - ULg > Département de physique > Physique statistique >]
Lumay, Geoffroy mailto [Université de Liège - ULg > Département de physique > Département de physique >]
Gerasimov, O. [> > > >]
Ludewig, François mailto [Université de Liège - ULg > > Chimie inorganique structurale >]
Mar-2007
European Physical Journal E -- Soft Matter
Springer
22
3
241-248
Yes (verified by ORBi)
International
1292-8941
1292-895X
New York
[en] This article is a review of our recent and new experimental works on granular compaction. The effects of various microscopic parameters on the compaction dynamics are addressed, in particular the influence of the grain shape, the friction and the cohesion between the grains. Two dimensional and three dimensional systems are analysed. And the role of dimensionality will be emphasized. Theoretical and numerical investigations provide additional informations about that phenomenon. Indeed numerical models permit us to study the influence of some parameters not easily accessible experimentally. Our results show that the above mentioned parameters have a deep impact on the compaction dynamics. Anisotropic grains lead to two different compaction regimes separated by a "burst" of the packing fraction. Friction is observed to modify how the grains are arranged in the pile. This is confirmed by numerical simulations. Cohesive forces between particles inhibit compaction and lead to extremely low values of the packing fraction.
Researchers ; Professionals ; Students
http://hdl.handle.net/2268/18069

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