Evolution of force networks during stick-slip motion of an intruder in a granular material: Topological measures extracted from experimental data
Document Type
Article
Publication Date
1-1-2023
Abstract
In quasi-two-dimensional experiments with photoelastic particles confined to an annular region, an intruder constrained to move in a circular path halfway between the annular walls experiences stick-slip dynamics. We discuss the response of the granular medium to the driven intruder, focusing on the evolution of the force network during sticking periods. Because the available experimental data do not include precise information about individual contact forces, we use an approach developed in our previous work [Basak, J. Eng. Mech. 147, 04021100 (2021)0733-939910.1061/(ASCE)EM.1943-7889.0002003] based on networks constructed from measurements of the integrated strain magnitude on each particle. These networks are analyzed using topological measures based on persistence diagrams, revealing that force networks evolve smoothly but in a nontrivial manner throughout each sticking period, even though the intruder and granular particles are stationary. Characteristic features of persistence diagrams show identifiable slip precursors. In particular, the number of generators describing the structure and complexity of force networks increases consistently before slips. Key features of the dynamics are similar for granular materials composed of disks or pentagons, but some details are consistently different. In particular, we find significantly larger fluctuations of the measures computed based on persistence diagrams and, therefore, of the underlying networks, for systems of pentagonal particles.
Identifier
85177617090 (Scopus)
Publication Title
Physical Review E
External Full Text Location
https://doi.org/10.1103/PhysRevE.108.054903
e-ISSN
24700053
ISSN
24700045
PubMed ID
38115403
Issue
5
Volume
108
Grant
W911NF-18-1-0184
Fund Ref
Army Research Office
Recommended Citation
Basak, Rituparna; Kozlowski, Ryan; Pugnaloni, Luis A.; Kramar, M.; Socolar, Joshua E.S.; Carlevaro, C. Manuel; and Kondic, Lou, "Evolution of force networks during stick-slip motion of an intruder in a granular material: Topological measures extracted from experimental data" (2023). Faculty Publications. 2380.
https://digitalcommons.njit.edu/fac_pubs/2380
