Shooting in a foam

Abstract : We study the motion of a solid sphere after its fast impact on a bath of liquid foam. We identify two regimes of deceleration. At short times, the velocity is still large and the foam behaves similar to a Newtonian fluid of constant viscosity. Then we measure a velocity threshold below which the sphere starts experiencing the foam's elasticity. We interpret this behavior using a visco-elasto-plastic model for foam rheology. Finally we discuss the possibility of stopping a projectile in the foam, and evaluate the capture efficiency.
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https://hal-polytechnique.archives-ouvertes.fr/hal-01075015
Contributor : Denis Roura <>
Submitted on : Thursday, October 16, 2014 - 1:58:03 PM
Last modification on : Thursday, July 4, 2019 - 11:00:05 AM

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Anne Le Goff, David Quéré, Christophe Clanet. Shooting in a foam. Soft Matter, Royal Society of Chemistry, 2014, 10 (35), pp.6696-6704. ⟨10.1039/C4SM00457D⟩. ⟨hal-01075015⟩

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