Physics – Condensed Matter – Disordered Systems and Neural Networks
Scientific paper
2004-05-17
Physics
Condensed Matter
Disordered Systems and Neural Networks
March 12, 2004
Scientific paper
The structure of random sphere packings in mechanical equilibrium in prescribed stress states, as studied by molecular dynamics simulations, strongly depends on the assembling procedure. Frictionless packings in the limit of low pressure are devoid of dilatancy, and consequently share the same random close packing density, but exhibit fabric anisotropy related to stress anisotropy. Efficient compaction methods can be viewed as routes to circumvent the influence of friction. Simulations designed to resemble two such procedures, lubrication and vibration (or ``tapping'') show that the resulting granular structures differ, the less dense one having, remarkably, the larger coordination number. Density, coordination number and fabric can thus vary independently. Calculations of elastic moduli and comparisons with experimental results suggest that measurable elastic properties provide information on those important internal state variables.
No associations
LandOfFree
Internal state of granular assemblies near random close packing does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Internal state of granular assemblies near random close packing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Internal state of granular assemblies near random close packing will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-284635