71 citations · 228 across the 11 of their papers we have counts for
11 papers
Faraday waves over a permeable rough substrate
Diego Barba Maggi, Alejandro Boschan, Roman Martino +2
We report on an experimental study of the Faraday instability in a vibrated fluid layer situated over a permeable and rough substrate, consisting either of a flat solid plate or of…
Friction weakening by mechanical vibrations: a velocity-controlled process
V. Vidal, C. Oliver, H. Lastakowski +2
Frictional weakening by vibrations was first invoked in the 70's to explain unusual fault slips and earthquakes, low viscosity during the collapse of impact craters or the extraord…
Avalanche precursors in a frictional model
Axelle Amon, Baptiste Blanc, Jean-Christophe Géminard
We present a one-dimensional numerical model based on elastically coupled sliders on a frictional incline of variable tilt. This very simple approach makes possible to study the pr…
Creep motion of a model frictional system
Baptiste Blanc, Luis A. Pugnaloni, Jean-Christophe Géminard
We report on the dynamics of a model frictional system submitted to minute external perturbations. The system consists of a chain of sliders connected through elastic springs that…
Degassing cascades in a shear-thinning viscoelastic fluid
Valérie Vidal, François Soubiran, Thibaut Divoux +1
We report the experimental study of the degassing dynamics through a thin layer of shear-thinning viscoelastic fluid (CTAB/NaSal solution), when a constant air flow is imposed at i…
Softening induced instability of a stretched cohesive granular layer
Hector Alarcon, Osvanny Ramos, Loïc Vanel +3
We report on a cellular pattern which spontaneously forms at the surface of a thin layer of a cohesive granular material submitted to in-plane stretching. We present a simple model…
Aging of the frictional properties induced by temperature variations
Jean-Christophe Géminard, Eric Bertin
The dry frictional contact between two solid surfaces is well-known to obey Coulomb friction laws. In particular, the static friction force resisting the relative lateral (tangenti…
Dynamics of crater formations in immersed granular materials
Germán Varas, Valérie Vidal, Jean-Christophe Géminard
We report the formation of a crater at the free surface of an immersed granular bed,locally crossed by an ascending gas flow. In two dimensions, the crater consists of two piles wh…
Intermittent outgassing through a non-Newtonian fluid
Thibaut Divoux, Eric Bertin, Valérie Vidal +1
We report an experimental study of the intermittent dynamics of a gas flowing through a column of a non-Newtonian fluid. In a given range of the imposed constant flow rate, the sys…
Creep motion of a granular pile induced by thermal cycling
Thibaut Divoux, Hervé Gayvallet, Jean-Christophe Géminard
We report a time-resolved study of the dynamics associated with the slow compaction of a granular column submitted to thermal cycles. The column height displays a complex behavior:…
The motion of the freely falling chain tip
W. Tomaszewski, P. Pieranski, J. -C. Geminard
The dynamics of the tip of the falling chain is analyzed. Results of laboratory experiments are presented and compared with results of numerical simulations. Time dependences of th…