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Article overview
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Jamming with tunable roughness | | Harukuni Ikeda
; Carolina Brito
; Matthieu Wyart
; Francesco Zamponi
; | | Date: |
27 Jan 2020 | | Abstract: | We introduce a new model to study the effect of surface roughness on the
jamming transition. By performing numerical simulations, we show that for a
smooth surface, the jamming transition density and the contact number at the
transition point both increase upon increasing asphericity, as for ellipsoids
and spherocylinders. Conversely, for a rough surface, both quantities decrease,
in quantitative agreement with the behavior of frictional particles.
Furthermore, in the limit corresponding to the Coulomb friction law, the model
satisfies a generalized isostaticity criterion proposed in previous studies. We
introduce a counting argument that justifies this criterion and interprets it
geometrically. Finally, we propose a simple theory to predict the contact
number at finite friction from the knowledge of the force distribution in the
infinite friction limit. | | Source: | arXiv, 2001.9665 | | Services: | Forum | Review | PDF | Favorites | |
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