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Coupling of elasticity to capillarity in soft aerated materials

Lucie Ducloué 1 Olivier Pitois 1 Julie Goyon 1 Xavier Chateau 1 Guillaume Ovarlez 1
1 Rhéophysique
navier umr 8205 - Laboratoire Navier
Abstract : We study the elastic properties of soft solids containing air bubbles. Contrary to standard porous materials, the softness of the matrix allows for a coupling of the matrix elasticity to surface tension forces brought in by the bubbles. Thanks to appropriate experiments on model systems, we show how the elastic response of the dispersions is governed by two dimensionless parameters: the gas volume fraction and a capillary number comparing the elasticity of the matrix to the stiffness of the bubbles. We also show that our experimental results are in good agreement with computations of the shear modulus through a micro-mechanical approach.
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Preprints, Working Papers, ...
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https://hal.archives-ouvertes.fr/hal-00919327
Contributor : Lucie Ducloué <>
Submitted on : Monday, December 16, 2013 - 3:42:04 PM
Last modification on : Tuesday, December 8, 2020 - 10:21:03 AM
Long-term archiving on: : Tuesday, March 18, 2014 - 4:51:50 PM

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  • HAL Id : hal-00919327, version 1
  • ARXIV : 1312.4512

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Lucie Ducloué, Olivier Pitois, Julie Goyon, Xavier Chateau, Guillaume Ovarlez. Coupling of elasticity to capillarity in soft aerated materials. 2013. ⟨hal-00919327⟩

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