bei Google ScholarTitelangaben
Hemmerle, Arnaud ; Yamaguchi, Yuta ; Makowski, Marcin ; Bäumchen, Oliver ; Goehring, Lucas:
Measuring and upscaling micromechanical interactions in a cohesive granular material.
In: Soft Matter.
Bd. 17
(2021)
Heft 23
.
- S. 5806-5814.
ISSN 1744-6848
DOI: https://doi.org/10.1039/D1SM00458A.
Abstract
The mechanical properties of a disordered heterogeneous medium depend, in general, on a complex interplay between multiple length scales. Connecting local interactions to macroscopic observables, such as stiffness or fracture, is thus challenging in this type of material. Here, we study the properties of a cohesive granular material composed of glass beads held together by soft polymer bridges. We characterise the mechanical response of single bridges under traction and shear, using a setup based on the deflection of flexible micropipettes. These measurements, along with information from X-ray microtomograms of the granular packings, then inform large-scale discrete element model (DEM) simulations. Although simple, these simulations are constrained in every way by empirical measurement and accurately predict mechanical responses of the aggregates, including details on their compressive failure, and how the material's stiffness depends on the stiffness and geometry of its parts. By demonstrating how to accurately relate microscopic information to macroscopic properties, these results provide new perspectives for predicting the behaviour of complex disordered materials, such as porous rock, snow, or foam.
Weitere Angaben
| Publikationsform: | Artikel in einer Zeitschrift |
|---|---|
| Begutachteter Beitrag: | Ja |
| Institutionen der Universität: | Fakultäten Fakultäten > Fakultät für Mathematik, Physik und Informatik Fakultäten > Fakultät für Mathematik, Physik und Informatik > Physikalisches Institut Fakultäten > Fakultät für Mathematik, Physik und Informatik > Physikalisches Institut > Lehrstuhl Experimentalphysik V Fakultäten > Fakultät für Mathematik, Physik und Informatik > Physikalisches Institut > Lehrstuhl Experimentalphysik V > Lehrstuhl Experimentalphysik V - Univ.-Prof. Dr. Oliver Bäumchen |
| Titel an der UBT entstanden: | Ja |
| Themengebiete aus DDC: | 500 Naturwissenschaften und Mathematik 500 Naturwissenschaften und Mathematik > 530 Physik |
| Eingestellt am: | 18 Jun 2021 08:15 |
| Letzte Änderung: | 18 Jun 2021 08:15 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/66042 |