000014906 001__ 14906
000014906 005__ 20161115100205.0
000014906 04107 $$aeng
000014906 046__ $$k2016-08-21
000014906 100__ $$aDorostkar, Omid
000014906 24500 $$aCFD-DEM study of saturated granular media; applications to fault gouge

000014906 24630 $$n24.$$p24th International Congress of Theoretical and Applied Mechanics - Book of Papers
000014906 260__ $$bInternational Union of Theoretical and Applied Mechanics, 2016
000014906 506__ $$arestricted
000014906 520__ $$2eng$$aIn this paper, we present CFD-DEM simulations of stick-slip in dry and saturated granular media. The geometry of the CFD-DEM model is based on the loading geometry of the earthquake machine of Penn. State University, where granular layers under biaxial loading are tested. In our 3D CFD-DEM simulations, the particles are confined between two rough plates, compressed laterally, and sheared at constant velocity. The CFD-DEM results show nonlinear behavior of granular media caused by frictional weakening in the fault gouge leading to slip. We compare simulations in dry and saturated (drained) cases to characterize the influence of pore pressure and fluid-particle interactions. The macroscopic friction signal, kinetic energy, layer thickness, pore pressure and slip event rate, characteristics of the system, are recorded and analyzed. The aim is to characterize the influence of fluids on the frictional behavior of system during the stick-slip cycles.

000014906 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000014906 653__ $$a

000014906 7112_ $$a24th International Congress of Theoretical and Applied Mechanics$$cMontreal (CA)$$d2016-08-21 / 2016-08-26$$gICTAM2016
000014906 720__ $$aDorostkar, Omid
000014906 8560_ $$ffischerc@itam.cas.cz
000014906 8564_ $$s168590$$uhttps://invenio.itam.cas.cz/record/14906/files/TS.FS08-2.04.pdf$$yOriginal version of the author's contribution as presented on CD,  page 3359, code TS.FS08-2.04
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000014906 962__ $$r13812
000014906 980__ $$aPAPER