Simulations of the failure of cohesive granular steps with varying intensities of the contact adhesive force are presented. The simulations are compared with experimental and numerical studies of wet shear flows [Badetti et al., J. Rheol. 62, 1175–1196 (2018) and Khamseh et al., Phys. Rev. E 92, 022201 (2015)], computing the apparent friction coefficient. We observe consistent behaviors. We reproduce the dependence between the macroscopic cohesion and the contact adhesion [Rumpf, Chem. Ing. Tech. 42, 538–540 (1970) and Richefeu et al., Phys. Rev. E 73(5), 051304 (2006)] observed experimentally for sticky polymer-coated grains, as well as the range of friction explored [Gans et al., Phys. Rev. E 101, 032904 (2020)]. Focusing on the interface between moving and static materials, and assuming a linear failure, we infer the orientation of the failure plane with the horizontal. We disclose a nonmonotonous evolution with the intensity of the contact adhesion. Assuming an ideal Coulomb material allows for proposing an interpretation to this nonmonotonous behavior. Although the systems are past incipient failure, we consider an edge of material at equilibrium, for which the failure angle is related to the internal frictional properties of the material. In this framework, the nonmonotonous evolution of the failure orientation may hint at a cohesion-induced weakening mechanism, by which stronger contact adhesion involve weaker friction.
Skip Nav Destination
Article navigation
September 2023
Research Article|
August 25 2023
Cohesive granular columns collapsing: Numerics questioning failure, cohesion, and friction
Lydie Staron
;
Lydie Staron
a)
1
Sorbonne Université, CNRS—UMR 7190, Institut d’Alembert
, F-75005 Paris, France
a)Author to whom correspondence should be addressed; electronic mail: lydie.staron@sorbonne-universite.fr
Search for other works by this author on:
Laurent Duchemin;
Laurent Duchemin
2
ESPCI Paris, UMR 7636—Physique et Mécanique des Milieux Hétérogenes
, F-75005 Paris, France
Search for other works by this author on:
Pierre-Yves Lagrée
Pierre-Yves Lagrée
1
Sorbonne Université, CNRS—UMR 7190, Institut d’Alembert
, F-75005 Paris, France
Search for other works by this author on:
a)Author to whom correspondence should be addressed; electronic mail: lydie.staron@sorbonne-universite.fr
Journal of Rheology 67, 1061–1072 (2023)
Article history
Received:
April 14 2023
Accepted:
August 06 2023
Citation
Lydie Staron, Laurent Duchemin, Pierre-Yves Lagrée; Cohesive granular columns collapsing: Numerics questioning failure, cohesion, and friction. Journal of Rheology 1 September 2023; 67 (5): 1061–1072. https://doi.org/10.1122/8.0000674
Download citation file:
Sign in
Don't already have an account? Register
Sign In
You could not be signed in. Please check your credentials and make sure you have an active account and try again.
Could not validate captcha. Please try again.
Sign in via your Institution
Sign in via your InstitutionPay-Per-View Access
$40.00
54
Views
Citing articles via
Related Content
Rheology and microstructure of unsaturated wet granular materials: Experiments and simulations
Journal of Rheology (September 2018)
Compliance of SLAC’s laser safety program with the SLAC control of hazardous energy (COHE) program
ILSC
Cohesion and aggregates in unsaturated wet granular flows down a rough incline
Journal of Rheology (June 2023)
Discrete simulation of model, loose cohesive powders: plastic consolidation, fractal microstructure and tensile strength
AIP Conference Proceedings (June 2009)
Shear strength and stress distribution in wet granular media
AIP Conference Proceedings (June 2009)