000014907 001__ 14907
000014907 005__ 20161115100205.0
000014907 04107 $$aeng
000014907 046__ $$k2016-08-21
000014907 100__ $$aForterre, Yoel
000014907 24500 $$aImpact in dense suspensions: Key role of pore-pressure

000014907 24630 $$n24.$$p24th International Congress of Theoretical and Applied Mechanics - Book of Papers
000014907 260__ $$bInternational Union of Theoretical and Applied Mechanics, 2016
000014907 506__ $$arestricted
000014907 520__ $$2eng$$aWe investigate the impact of a freely-falling rigid sphere onto a granular pile immersed in a Newtonian liquid. Two very different behaviors are observed depending on the initial packing fraction of the pile. For initially loose packing, the ball readily sinks in the suspension as in a liquid whereas, for densely packed beds, the ball stops immediately as it hits the suspension. By combining local measurements of the interstitial fluid pressure and a simple impact model, we show that this liquid–solid transition is controlled by the coupling between the dilatancy of the pile and the pore–pressure generated by the impact. These results unify the description of impacts in various particulate media including cornstarch suspensions. They show that complex responses can arise from transient fluid–particle coupling rather than from the intrinsic rheology of the material.

000014907 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000014907 653__ $$a

000014907 7112_ $$a24th International Congress of Theoretical and Applied Mechanics$$cMontreal (CA)$$d2016-08-21 / 2016-08-26$$gICTAM2016
000014907 720__ $$aForterre, Yoel
000014907 8560_ $$ffischerc@itam.cas.cz
000014907 8564_ $$s148311$$uhttps://invenio.itam.cas.cz/record/14907/files/TS.FS08-2.05.pdf$$yOriginal version of the author's contribution as presented on CD,  page 3361, code TS.FS08-2.05
.
000014907 962__ $$r13812
000014907 980__ $$aPAPER