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How a colloidal paste flows – scaling behaviors in dispersions of aggregated particles under mechanical stress –

Botet, Robert and Cabane, Bernard and Clifton, Michaël and Meireles, Martine and Seto, R How a colloidal paste flows – scaling behaviors in dispersions of aggregated particles under mechanical stress –. (2008) AIp Conference Proceedings, vol. 9 . pp. 320-325.

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Official URL: http://dx.doi.org/10.1063/1.2897806

Abstract

We have developed a novel computational scheme that allows direct numerical simulation of the mechanical behavior of sticky granular matter under stress. We present here the general method, with particular emphasis on the particle features at the nanometric scale. It is demonstrated that, although sticky granular material is quite complex and is a good example of a challenging computational problem (it is a dynamical problem, with irreversibility, self-organization and dissipation), its main features may be reproduced on the basis of rather simple numerical model, and a small number of physical parameters. This allows precise analysis of the possible deformation processes in soft materials submitted to mechanical stress. This results in direct relationship between the macroscopic rheology of these pastes and local interactions between the particles.

Item Type:Article
Additional Information:Thanks to American Institute of Physics editor. The definitive version is available at http://www.aip.org/ The original PDF of the article can be found at AIP Conference Proceedings website : http://scitation.aip.org/proceedings/
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS
Other partners > Ecole Supérieure de Physique et de Chimie Industrielles - ESPCI (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Other partners > Université de Paris Diderot - Paris 7 (FRANCE)
Other partners > Université Pierre et Marie Curie, Paris 6 - UPMC (FRANCE)
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
Other partners > Ritsumeikan Asia Pacific University - APU (JAPAN)
Other partners > Université Paris-Sud 11 (FRANCE)
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Deposited By: Hélène Dubernard

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