Unifying impacts in granular matter from quicksand to cornstarch
Soft Condensed Matter
2016-08-31 v1
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.
Keywords
Cite
@article{arxiv.1603.07013,
title = {Unifying impacts in granular matter from quicksand to cornstarch},
author = {J John Soundar Jerome and Nicolas Vandenberghe and Yoel Forterre},
journal= {arXiv preprint arXiv:1603.07013},
year = {2016}
}
Comments
e.g. 11 pages, 4 figures, 3 supplemetal figures, one supplemental table