[Propriétés structurales des mousses solides]
La faible densité d'une mousse est responsable de ses hautes propriétés mécaniques spécifiques. Les modèles classiques décrivant les propriétés structurales des mousses solides sont fonctions de la densité de celles-ci. L'exposant de la loi d'échelle utilisée pour décrire l'évolution des propriétés en fonction de la densité constitue un paramètre clé pour l'optimisation de la mousse en vue d'une application donnée. Cet exposant est généralement supposé correspondre à des mécanismes de déformation particuliers. Néanmoins, les modèles sous-jacents envisagent des mousses idéales. Une description plus fine de la mousse, tenant compte de son architecture réelle, de ses hétérogénéités structurales, ainsi que de l'hétérogénéité et des défauts du matériau constitutif, est nécessaire pour expliquer et prédire le comportement des mousses réelles.
The low density of foams is responsible for their high specific mechanical properties. Classical models describing the structural properties of solid foams are functions of the foam density. The exponent of the scaling law used to describe the evolution of the properties with density is a key parameter in order to optimise the foam for a given application. This exponent is generally assumed to correspond to particular local deformation mechanisms. Nevertheless, the underlying models are based on ideal foams. A finer description of the foam, taking into account the real architecture, the structural heterogeneities, and the constitutive material heterogeneity and defects, is required to explain and predict the behaviour of real foams.
Mot clés : Mousses, Propriétés structurales, Lois d'échelle
@article{CRPHYS_2014__15_8-9_696_0,
author = {Pierre Lhuissier},
title = {Structural properties of solid foams},
journal = {Comptes Rendus. Physique},
pages = {696--704},
publisher = {Elsevier},
volume = {15},
number = {8-9},
year = {2014},
doi = {10.1016/j.crhy.2014.09.003},
language = {en},
}
Pierre Lhuissier. Structural properties of solid foams. Comptes Rendus. Physique, Volume 15 (2014) no. 8-9, pp. 696-704. doi : 10.1016/j.crhy.2014.09.003. https://comptes-rendus.academie-sciences.fr/physique/articles/10.1016/j.crhy.2014.09.003/
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