Unifying Impacts in Granular Matter from Quicksand to Cornstarch

J. John Soundar Jerome, Nicolas Vandenberghe, and Yoël Forterre
Phys. Rev. Lett. 117, 098003 – Published 23 August 2016
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Abstract

A sharp transition between liquefaction and transient solidification is observed during impact on a granular suspension depending on the initial packing fraction. We demonstrate, via high-speed pressure measurements and a two-phase modeling, that this transition is controlled by a coupling between the granular pile dilatancy and the interstitial fluid pressure generated by the impact. Our results provide a generic mechanism for explaining the wide variety of impact responses in particulate media, from dry quicksand in powders to impact hardening in shear-thickening suspensions like cornstarch.

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  • Received 15 March 2016

DOI:https://doi.org/10.1103/PhysRevLett.117.098003

© 2016 American Physical Society

Physics Subject Headings (PhySH)

Fluid DynamicsPolymers & Soft Matter

Authors & Affiliations

J. John Soundar Jerome1,2,†, Nicolas Vandenberghe2, and Yoël Forterre1,*

  • 1Aix Marseille Univ, CNRS, IUSTI, 13013 Marseille, France
  • 2Aix Marseille Univ, CNRS, Centrale Marseille, IRPHE, 13013 Marseille, France

  • *yoel.forterre@univ-amu.fr
  • Present address: Université Claude–Bernard Lyon 1, CNRS, LMFA UMR 5509, F-69622 Villeurbanne Cedex 08, France.

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Issue

Vol. 117, Iss. 9 — 26 August 2016

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