Phase Diagram and Scaling of Granular Materials under Horizontal Vibrations

Autor:	Ingo Rehberg, Gunther Dr.rer.nat. Straßburger, Gerald H. Ristow
Rok vydání:	1997
Předmět:	Physics Molecular dynamics Amplitude Transition point Condensed matter physics General Physics and Astronomy Pair distribution function Order (ring theory) Granular material Scaling Phase diagram
Zdroj:	Physical Review Letters. 79:833-836
ISSN:	1079-7114 0031-9007
DOI:	10.1103/physrevlett.79.833
Popis:	Horizontal vibration of a granular material is studied experimentally and by means of molecular dynamics simulations. We focus on the transition from a more solidlike behavior of the granulate, which is obtained at small driving velocities, to a more fluidlike behavior for higher velocities. We present two different order parameters suitable to characterize the transition, namely the granular temperature and the pair distribution function. When using different frequencies $f$ and amplitudes ${A}_{0}$ of the vibration, we find that the transition point from the solid to the fluid phase scales with ${A}_{0}{f}^{2}$, whereas the granular temperature scales as $({A}_{0}f{)}^{1.66}$.
Databáze:	OpenAIRE
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