Granular dampers in microgravity: sharp transition between modes of operation
Sack A, Windows-Yule K, Heckel M, Werner D, Pöschel T (2020)
Publication Type: Journal article
Publication year: 2020
Journal
Book Volume: 22
Journal Issue: 2
DOI: 10.1007/s10035-020-01017-x
Abstract
When a container filled with granular material is subjected to sinusoidal vibration in microgravity, dependent on the amplitude of the oscillation, the granulate may exhibit one of two distinct dynamical modes: at low amplitude, a gas-like state is observed, where the particles are relatively homogeneously distributed within the container, almost independent of the phase of the oscillation. In contrast, for large amplitude, collective motion of the particles is favoured, termed collect-and-collide regime. Both regimes are characterized by very different dissipation characteristics. A recent model predicts that the regimes are separated by a sharp transition due to a critical amplitude of the vibration. Here we confirm this prediction of a sharp transition and also the numerical value of the critical amplitude by means of experiments performed under conditions of weightlessness.
Authors with CRIS profile
Achim Sack
Lehrstuhl für Multiscale Simulation of Particulate Systems
Michael Heckel
Lehrstuhl für Multiscale Simulation of Particulate Systems
Thorsten Pöschel
Lehrstuhl für Multiscale Simulation of Particulate Systems
Involved external institutions
United Kingdom (GB)How to cite
APA:
Sack, A., Windows-Yule, K., Heckel, M., Werner, D., & Pöschel, T. (2020). Granular dampers in microgravity: sharp transition between modes of operation. Granular Matter, 22(2). https://dx.doi.org/10.1007/s10035-020-01017-x
MLA:
Sack, Achim, et al. "Granular dampers in microgravity: sharp transition between modes of operation." Granular Matter 22.2 (2020).
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