Structural similarity between dry and wet sphere packings

Beitrag in einer Fachzeitschrift


Details zur Publikation

Autor(en): Weis S, Schröder-Turk G, Schröter M
Zeitschrift: New Journal of Physics
Jahr der Veröffentlichung: 2019
Band: 21
ISSN: 1367-2630


Abstract

The mechanical properties of granular materials change significantly in the presence of a wetting liquid which creates capillary bridges between the particles. This results e.g. in a reduced value of the volume fraction when a packing is prepared with added liquid. Here we use x-ray tomography to demonstrate that this change in mechanical properties is not accompanied by structural differences between dry and wet sphere packings when compared at the same volume fraction. We characterize the structure of the packings by the average numbers of contacts of each sphere < Z > and the shape isotropy of the Voronoi cells of the particles. Additionally, we show that the number of liquid bridges per sphere < B > is approximately equal to < Z > + 2, independent of the volume fraction of the packing. These findings will be helpful in guiding the development of both particle-based models and continuum mechanical descriptions of wet granular matter.


FAU-Autoren / FAU-Herausgeber

Schröder-Turk, Gerd PD Dr.
Lehrstuhl für Theoretische Physik
Schröter, Matthias Dr.
Lehrstuhl für Multiscale Simulation of Particulate Systems
Weis, Simon
Lehrstuhl für Theoretische Physik


Zitierweisen

APA:
Weis, S., Schröder-Turk, G., & Schröter, M. (2019). Structural similarity between dry and wet sphere packings. New Journal of Physics, 21. https://dx.doi.org/10.1088/1367-2630/ab1517

MLA:
Weis, Simon, Gerd Schröder-Turk, and Matthias Schröter. "Structural similarity between dry and wet sphere packings." New Journal of Physics 21 (2019).

BibTeX: 

Zuletzt aktualisiert 2019-07-05 um 10:08