Ratcheting and Transitions: Short Granular Chain in a Gradient of Vibration
Journal
Physical Review Letters
Journal Volume
112
Journal Issue
5
Pages
058001
Date Issued
2014
Author(s)
Abstract
We report our experimental work on a one-dimensional gradient of vibration with a short granular chain. The system exhibits transitions of ratcheting dynamics from passive monotonic creeping against the gradient, to rapid stochastic head swinging with a reversed bias in its direction, and to seemingly random fluctuations. The spontaneously emerged spatial pattern reflects bifurcations of the state of the chain. Evidence from counterpart experiments using uniform vibrations confirms a nonmonotonic development of accessible modes behind the transitions, whereas the reversed ratcheting reflects an interesting dialogue between the size of the object and the spatial gradient.
SDGs
Type
journal article