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Fluid and glassy phases of vibrated granular matter studied with a torsion oscillator

Publications associées (49)

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On the parameterization of rigid base and basepair models of DNA from molecular dynamics simulations

John Maddocks, Leesa Maree Heffler

A method is described to extract a complete set of sequence-dependent material parameters for rigid base and basepair models of DNA in solution from atomistic molecular dynamics simulations. The method is properly consistent with equilibrium statistical me ...

2009

Caging Dynamics in a Granular Fluid

Pedro Miguel Nunes Pereira de Almeida Reis

We report an experimental investigation of the caging motion in a uniformly heated granular fluid for a wide range of filling fractions, ϕ. At low ϕ the classic diffusive behavior of a fluid is observed. However, as ϕ is increased, temporary cages develop ...

American Physical Society2007

A granular model of solidification as applied to hot tearing

Stéphane Vernède

Hot cracking is a spontaneous failure of an alloy during solidification. It is a severe problem for casting industry as it reduces the productivity of cast houses and limits the range of alloys compositions that can be industrially produced. Hot tears occu ...

EPFL2007

Plasticity and geophysical flows: A review

Christophe Ancey

The objective of this review is to examine how the concept of plasticity is used in geophysical fluid dynamics. Rapid mass movements such as snow avalanches or debris flows involve slurries of solid particles (ice, boulder, clay, etc.) within an interstiti ...

2007

A finite-temperature dynamic coupled atomistic/discrete dislocation method

William Curtin, Ronald Earle Miller

A method for simultaneously thermostatting an atomistic region and absorbing energetic pulses impinging on the atormstic/continuum interface from the atomistic region is developed to operate within the framework of the coupled atomistic/discrete dislocatio ...

2005

Rheological Characteristics of Hyperbranched Polyesters

John Christopher Plummer, Marlene Rodlert

When the effects of physical aging below Tg are erased, the rheological response of a series of aliphatic hyperbranched polyesters is Newtonian and the melt viscosity scales roughly linearly with Mw at high Mw, indicating entanglement to be absent. The rhe ...

2002

Gaussian density fluctuations and mode coupling theory for supercooled liquids

Giuseppe Foffi, Francesco Sciortino

The equations of motion for the density modes of a fluid, derived from Newton's equations, are written as a linear generalized Langevin equation. The constraint imposed by the fluctuation-dissipation theorem is used to derive an exact form for the memory f ...

2001

A strong to fragile transition in a model of liquid silica

Philippe Gillet, James Badro

The transport properties of an ionic model for liquid silica [1] at high temperatures and pressure are investigated using molecular dynamics simulations. With increasing pressure, a clear change from "strong" to "fragile" behaviour (according to Angell's c ...

1997

Study of a class of models for self-organization: equilibrium analysis

Max-Olivier Hongler

A new class of nonlinear stochastic models is introduced with a view to explore self-organization. The model consists of an assembly of anharmonic oscillators, interacting via a mean field of system size range, in presence of white, Gaussian noise. Its pro ...

Kluwer Academic Publishers-Plenum Publishers1983