Shooting in a foam.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 25066080.
- Also identified by DOI 10.1039/c4sm00457d.
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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.