@inproceedings{09b3f62ef8f14da58fc0031a0d4a768b,
title = "Granular impact dynamics: Fluctuations at short time-scales",
abstract = "Several recent studies on granular impact have used a macroscopic force law which describes the slow (mean) dynamics. However, these force-law models must be modified to capture large fluctuations at short time-scales. Here, we discuss granular impact experiments using photoelastic particles, where high-speed video captures both the intruder dynamics and the local granular force response. We show how to systematically separate the fluctuations from the mean dynamics. We also show that these fluctuations are multiplicative with the mean force, and otherwise decoupled from the dynamics. These observations are instructive in connecting to microscopic processes which generate the fluctuations.",
keywords = "Fluctuations, Granular, Impact",
author = "Clark, {Abram H.} and Lou Kondic and Behringer, {R. P.}",
note = "Copyright: Copyright 2013 Elsevier B.V., All rights reserved.; 7th International Conference on Micromechanics of Granular Media: Powders and Grains 2013 ; Conference date: 08-07-2013 Through 12-07-2013",
year = "2013",
doi = "10.1063/1.4811963",
language = "English (US)",
isbn = "9780735411661",
series = "AIP Conference Proceedings",
pages = "445--448",
booktitle = "Powders and Grains 2013 - Proceedings of the 7th International Conference on Micromechanics of Granular Media",
}