Michel Tsukahara

Cette personne n’est plus à l’EPFL

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Publications associées (5)

Jamming in granular media : modeling of experimental data

Michel Tsukahara

This thesis studies the phenomenon of jamming in granular media, such as when a salt shaker gets clogged. We use modern instrumentation, like X-ray synchrotron tomography, to look inside real jamming experiments. High performance computers allow simulating ...

EPFL2009

Particle shape versus friction in granular jamming

Michel Tsukahara, Thomas Liebling, Lionel Pournin

What is the influence of sand grain shapes on an hourglass accuracy, and how does it affect the jamming probability? We study such a question using numerical simulation and our recently introduced spheropolyhedral particles. Spheropolyhedra constitute a ve ...

AIP2009

Simple probabilistic modeling of granular jamming and validation using DEM

Michel Tsukahara, Thomas Liebling, Lionel Pournin

We study the flow of grains in a bi-dimensional hopper. We propose a simple continuous probabilistic flow model: from uniformly random positions in the hopper, particles evolve without interaction towards the hopper aperture and jamming occurs if sufficien ...

AIP2009

Coupled tomography and distinct-element-method approach to exploring the granular media microstructure in a jamming hourglass

Michel Tsukahara, Thomas Liebling, Giorgio Margaritondo, Michaël Unser, Daniel Sage, Lionel Pournin, Marco Ramaioli, Vincent Gajdosik, Slobodan Mitrovic

We describe an approach for exploring microscopic properties of granular media that couples x-ray microtomography and distinct-element-method (DEM) simulations through image analysis. We illustrate it via the study of the intriguing phenomenon of instant a ...

APS2008

Three-dimensional distinct element simulation of spherocylinder crystallization

Michel Tsukahara, Jean-Albert Ferrez, Thomas Liebling, Lionel Pournin, Marco Ramaioli

We present a three-dimensional distinct element model (DEM) able to handle populations of spherocylinders. We report on granular crystallization occurring when vibrating mono-disperse assemblies of spherocylinders that faithfully reproduce the correspondin ...

Springer-Verlag2005

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