Mechanical properties of inclined frictional granular layers
| Autor: | Atman, A. P. F., Claudin, P., Combe, G., Martins, G. H. B. |
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| Rok vydání: | 2014 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1007/s10035-014-0482-8 |
| Popis: | We investigate the mechanical properties of inclined frictional granular layers prepared with different protocols by means of DEM numerical simulations. We perform an orthotropic elastic analysis of the stress response to a localized overload at the layer surface for several substrate tilt angles. The distance to the unjamming transition is controlled by the tilt angle $\alpha$ with respect to the critical angle $\alpha_c$. We find that the shear modulus of the system decreases with $\alpha$, but tends to a finite value as $\alpha \to \alpha_c$. We also study the behaviour of various microscopic quantities with $\alpha$, and show in particular the evolution of the contact orientation with respect to the orthotropic axes and that of the distribution of the friction mobilisation at contact. Comment: 9 pages, 6 figures. Granular Matter (2014), Special Issue in honor of Bob Behringer |
| Databáze: | arXiv |
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