Issue |
EPL
Volume 122, Number 3, May 2018
|
|
---|---|---|
Article Number | 38003 | |
Number of page(s) | 5 | |
Section | Interdisciplinary Physics and Related Areas of Science and Technology | |
DOI | https://doi.org/10.1209/0295-5075/122/38003 | |
Published online | 22 June 2018 |
Training, memory and universal scaling in amorphous frictional granular matter
1 Collective Interactions Unit, OIST Graduate University - Onna, Okinawa, 904-0495 Japan
2 Dept of Chemical Physics, The Weizmann Institute of Science - Rehovot 76100, Israel
3 The Niels Bohr International Academy, University of Copenhagen - Blegdamsvej 17, DK-2100 Copenhagen, Denmark
Received: 16 April 2018
Accepted: 1 June 2018
We report a joint experimental and theoretical investigation of cyclic training of amorphous frictional granular assemblies, with special attention to memory formation and retention. Measures of dissipation and compactification are introduced, culminating with a proposed scaling law for the reducing dissipation and increasing memory. This scaling law is expected to be universal, and insensitive to the details of the elastic and frictional interactions between the granules.
PACS: 83.80.Fg – Granular solids / 45.70.-n – Granular systems / 89.75.Da – Systems obeying scaling laws
© EPLA, 2018
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