Publications [#245469] of Robert P. Behringer
Papers Published
- Geng, J; Behringer, RP, Diffusion, mobility and failure for a stirred granular system,
in Powders and Grains, 2005, edited by R. Garcia-Rojo, and H. J. Herrmann,
Powders and Grains 2005 Proceedings of the 5th International Conference on Micromechanics of Granular Media, vol. 2
(December, 2005),
pp. 933-937, Balkema
(last updated on 2019/02/20)Abstract:
We describe experimentsto determine diffusivity and mobilityin a stirred densegranular system. We find that the diffusion is well described as simple Brownian. We find that the force to push a tracer through a surrounding sea of particles is almost independent of pushing speed, modulo a slow logarithmic increase. We model the pushing experiments, borrowing from a spring-failure model proposed by Khang et al. The agreement between experiment and model is substantial. © 2005 Taylor & Francis Group.