Wall Slip of Soft-Jammed Systems: A Generic Simple Shear Process
X. Zhang
(1)
,
Elise Lorenceau
(2)
,
Philippe Basset
(3)
,
Tarik Bourouina
(3)
,
Florence Rouyer
(1)
,
Julie Goyon
(1)
,
Philippe Coussot
(1)
Elise Lorenceau
- Fonction : Auteur
- PersonId : 7052
- IdHAL : elise-lorenceau
- ORCID : 0000-0001-6511-2212
- IdRef : 074544071
Philippe Basset
- Fonction : Auteur
- PersonId : 18820
- IdHAL : philippe-basset
- ORCID : 0000-0002-9790-8247
- IdRef : 07452285X
Tarik Bourouina
- Fonction : Auteur
- PersonId : 18824
- IdHAL : tarik-bourouina
- ORCID : 0000-0003-2342-7149
- IdRef : 110802160
Florence Rouyer
- Fonction : Auteur
- PersonId : 15005
- IdHAL : florence-rouyer
- ORCID : 0000-0002-9024-015X
- IdRef : 158048318
Julie Goyon
- Fonction : Auteur
- PersonId : 171432
- IdHAL : julie-goyon
- ORCID : 0000-0002-9653-9646
- IdRef : 130352705
Résumé
From well-controlled long creep tests we show that the residual apparent yield stress observed with soft-jammed systems along smooth surfaces is an artefact due to edge effects. By removing these effects we can determine the stress solely associated with steady state wall slip below the material yield stress. This stress is found to vary linearly with the slip velocity for a wide range of materials whatever the structure, the interaction types between the elements and with the wall, and the concentration. Thus wall slip results from the laminar flow of some given free liquid volume remaining between the (rough) jammed structure formed by the elements, and the smooth wall. This phenomenon may be described by the simple shear flow in a Newtonian liquid layer of uniform thickness. For various systems this equivalent thickness varies in a narrow range (35 ± 15 nm).
Domaines
Matière Molle [cond-mat.soft] Mécanique des matériaux [physics.class-ph] Mécanique des fluides [physics.class-ph] Dynamique des Fluides [physics.flu-dyn]Format du dépôt | Fichier |
---|---|
Type de dépôt | Article dans une revue |
Titre |
en
Wall Slip of Soft-Jammed Systems: A Generic Simple Shear Process
|
Résumé |
en
From well-controlled long creep tests we show that the residual apparent yield stress observed with soft-jammed systems along smooth surfaces is an artefact due to edge effects. By removing these effects we can determine the stress solely associated with steady state wall slip below the material yield stress. This stress is found to vary linearly with the slip velocity for a wide range of materials whatever the structure, the interaction types between the elements and with the wall, and the concentration. Thus wall slip results from the laminar flow of some given free liquid volume remaining between the (rough) jammed structure formed by the elements, and the smooth wall. This phenomenon may be described by the simple shear flow in a Newtonian liquid layer of uniform thickness. For various systems this equivalent thickness varies in a narrow range (35 ± 15 nm).
|
Auteur(s) |
X. Zhang
1
, Elise Lorenceau
2
, Philippe Basset
3
, Tarik Bourouina
3
, Florence Rouyer
1
, Julie Goyon
1
, Philippe Coussot
1
1
navier umr 8205 -
Laboratoire Navier
( 204904 )
- Ecole des Ponts ParisTech 6 / 8 avenue Blaise Pascal 77455 CHAMPS SUR MARNE
- France
2
LIPhy -
Laboratoire Interdisciplinaire de Physique [Saint Martin d’Hères]
( 1041857 )
- 140 rue de la Physique
38058 Grenoble cedex 9
- France
3
ESYCOM -
Electronique, Systèmes de communication et Microsystèmes
( 43154 )
- Université de Paris-Est - Marne-la-Vallée, Cité Descartes, Bâtiment Copernic, 5 bd Descartes, 77454 Marne-la-Vallée Cedex 2
- France
|
Langue du document |
Anglais
|
Nom de la revue |
|
Vulgarisation |
Non
|
Comité de lecture |
Oui
|
Audience |
Internationale
|
Date de publication |
2017
|
Volume |
119
|
Numéro |
20
|
Domaine(s) |
|
Projet(s) ANR |
|
DOI | 10.1103/PhysRevLett.119.208004 |
Origine :
Fichiers produits par l'(les) auteur(s)
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