Regensburg 2010 – wissenschaftliches Programm
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DY: Fachverband Dynamik und Statistische Physik
DY 9: Granular Matter/ Contact Dynamics I
DY 9.2: Vortrag
Dienstag, 23. März 2010, 10:15–10:30, H47
Random packings of spheres - Is there a limit on being loose? — •Matthias Schröter1, Melissa Jerkins2, and Harry L. Swinney2 — 1MPI for Dynamics and Self-Organization, Göttingen — 2Center for Nonlinear Dynamics, UT Austin
A granular solid is defined by a finite yield stress; with decreasing volume fraction this yield stress vanishes and the sample turns into a granular fluid. The nature of this solid-liquid transition is still debatted. We will join the discussion by presenting experimental data how pressure, friction [1] and particle shape influence the phase boundary.
[1] Jerkins et al., Phys. Rev. Lett. 101, 018301 (2008)