Structure of force networks in tapped particulate systems of disks and pentagons : I. Clusters and loops

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The force network of a granular assembly, defined by the contact network and the corresponding contact forces, carries valuable information about the state of the packing. Simple analysis of these networks based on the distribution of force strengths is rather insensitive to the changes in preparati...

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Autores principales: Pugnaloni, Luis Ariel, Carlevaro, Carlos Manuel, Kramár, M., Mischaikow, K., Kondic, L.
Formato: Articulo
Lenguaje:Inglés
Publicado: 2016
Materias:
Física
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/86778
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-86778
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Física
spellingShingle Física
Pugnaloni, Luis Ariel
Carlevaro, Carlos Manuel
Kramár, M.
Mischaikow, K.
Kondic, L.
Structure of force networks in tapped particulate systems of disks and pentagons : I. Clusters and loops
topic_facet Física
description The force network of a granular assembly, defined by the contact network and the corresponding contact forces, carries valuable information about the state of the packing. Simple analysis of these networks based on the distribution of force strengths is rather insensitive to the changes in preparation protocols or to the types of particles. In this and the companion paper [Kondic, Phys. Rev. E 93, 062903 (2016)10.1103/PhysRevE.93.062903], we consider two-dimensional simulations of tapped systems built from frictional disks and pentagons, and study the structure of the force networks of granular packings by considering network's topology as force thresholds are varied. We show that the number of clusters and loops observed in the force networks as a function of the force threshold are markedly different for disks and pentagons if the tangential contact forces are considered, whereas they are surprisingly similar for the network defined by the normal forces. In particular, the results indicate that, overall, the force network is more heterogeneous for disks than for pentagons. Such differences in network properties are expected to lead to different macroscale response of the considered systems, despite the fact that averaged measures (such as force probability density function) do not show any obvious differences. Additionally, we show that the states obtained by tapping with different intensities that display similar packing fraction are difficult to distinguish based on simple topological invariants.
format Articulo
Articulo
author Pugnaloni, Luis Ariel
Carlevaro, Carlos Manuel
Kramár, M.
Mischaikow, K.
Kondic, L.
author_facet Pugnaloni, Luis Ariel
Carlevaro, Carlos Manuel
Kramár, M.
Mischaikow, K.
Kondic, L.
author_sort Pugnaloni, Luis Ariel
title Structure of force networks in tapped particulate systems of disks and pentagons : I. Clusters and loops
title_short Structure of force networks in tapped particulate systems of disks and pentagons : I. Clusters and loops
title_full Structure of force networks in tapped particulate systems of disks and pentagons : I. Clusters and loops
title_fullStr Structure of force networks in tapped particulate systems of disks and pentagons : I. Clusters and loops
title_full_unstemmed Structure of force networks in tapped particulate systems of disks and pentagons : I. Clusters and loops
title_sort structure of force networks in tapped particulate systems of disks and pentagons : i. clusters and loops
publishDate 2016
url http://sedici.unlp.edu.ar/handle/10915/86778
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