Reference : Effect of friction in a toy model of granular compaction
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
http://hdl.handle.net/2268/18078
Effect of friction in a toy model of granular compaction
English
Ludewig, François mailto [Université de Liège - ULiège > > Chimie inorganique structurale >]
Dorbolo, Stéphane mailto [Université de Liège - ULiège > Département de physique > Physique statistique >]
Vandewalle, Nicolas mailto [Université de Liège - ULiège > Département de physique > Physique statistique >]
Nov-2004
Physical Review E
American Physical Soc
70
5, Pt 1
51304
Yes (verified by ORBi)
International
1539-3755
College Pk
[en] A toy model of granular compaction which includes some resistance due to granular arches is proposed. In this model, the solid/solid friction of contacting grains is a key parameter and a slipping threshold omega(c) is defined. Realistic compaction behaviors have been obtained. Two regimes separated by a critical point omega(c)* of the slipping threshold have been emphasized: (i) a slow compaction with lots of paralyzed regions and (ii) an inverse logarithmic dynamics with a power-law scaling of grain mobility. Below the critical point omega(c)*, the physical properties of this frozen system become independent of omega(c). Above the critical point omega(c)*-i.e., for low friction values-the packing properties behave as described by the classical Janssen theory for silos.
Researchers ; Professionals ; Students
http://hdl.handle.net/2268/18078
10.1103/PhysRevE.70.051304

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