Unifying impacts in granular matter from quicksand to cornstarch
| Autor: | Jerome, J John Soundar, Vandenberghe, Nicolas, Forterre, Yoel |
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| Rok vydání: | 2016 |
| Předmět: | |
| Zdroj: | Phys. Rev. Lett. 117, 098003 (2016) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevLett.117.098003 |
| Popis: | 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. Comment: e.g. 11 pages, 4 figures, 3 supplemetal figures, one supplemental table |
| Databáze: | arXiv |
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