We propose a two-dimensional geometrical model that takes into account geometrical effects of frustration in the rearrangement processes in granular systems. In particular we related the microscopic motor of compaction to the need of cooperative rearrangements in order to find a better packing. In this framework it is possible to reproduce the experimental results for the compaction behavior. Moreover the system with different degrees of frustration shows segregation phenomena.
Geometrical frustration: a dynamical motor for dry granular media / Caglioti, Emanuele; A., Coniglio; H. J., Herrmann; Loreto, Vittorio; M., Nicodemi. - In: PHYSICA. A. - ISSN 0378-4371. - STAMPA. - 257:(1998), pp. 419-423. (Intervento presentato al convegno Vth Latin American Workshop on Non-Linear Phenomena/11th MEDYFINOL Conference on Statistical Physics of Dynamic and Complex Systems tenutosi a Canela, Brazil nel 28 Settembre - 3 Ottobre 1997) [10.1016/S0378-4371(98)00170-8].
Geometrical frustration: a dynamical motor for dry granular media
CAGLIOTI, Emanuele;LORETO, Vittorio;
1998
Abstract
We propose a two-dimensional geometrical model that takes into account geometrical effects of frustration in the rearrangement processes in granular systems. In particular we related the microscopic motor of compaction to the need of cooperative rearrangements in order to find a better packing. In this framework it is possible to reproduce the experimental results for the compaction behavior. Moreover the system with different degrees of frustration shows segregation phenomena.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
