Weak Agitations, Zero Yield Stress and Smooth Flows in Granular Media
- Event time: 1:00pm
- Event date: 19th May 2006
- Speaker: Martin van Hecke (Leiden University)
- Location: Room 2511, James Clerk Maxwell Building (JCMB) James Clerk Maxwell Building Peter Guthrie Tait Road Edinburgh EH9 3FD GB
We believe that this behavior is caused by tiny agitations of the grains, which lead to large fluctuations of the contact forces --- deformations on the order of nanometers are sufficient to cause order one changes in contact force for millimetric glass beads. Consequences for the theory of slow grain flows and preliminary experiments in which the propagation of these agitations are manipulated will be presented.
This is a weekly series of informal talks given primarily by members of the soft condensed matter and statistical mechanics groups, but is also open to members of other groups and external visitors. The aim of the series is to promote discussion and learning of various topics at a level suitable to the broad background of the group. Everyone is welcome to attend..