Force chains and contact network topology in packings of elongated particles
arXiv:1108.3164 · doi:10.1103/PhysRevE.85.031303
Abstract
By means of contact dynamic simulations, we investigate the contact network topology and force chains in two-dimensional packings of elongated particles modeled by rounded-cap rectangles. The morphology of large packings of elongated particles in quasistatic equilibrium is complex due to the combined effects of local nematic ordering of the particles and orientations of contacts between particles. We show that particle elongation affects force distributions and force/fabric anisotropy via various local structures allowed by steric exclusions and the requirement of force balance. As a result, the force distributions become increasingly broader as particles become more elongated. Interestingly, the weak force network transforms from a passive stabilizing agent with respect to strong force chains to an active force-transmitting network for the whole system. The strongest force chains are carried by side/side contacts oriented along the principal stress direction.
Soumis a Physical Review E
References in corpus (13)
- Hypoconstrained Jammed Packings of Nonspherical Hard Particles: Ellipses and Ellipsoids
- Quasistatic rheology, force transmission and fabric properties of a packing of irregular polyhedral particles
- Stress-strain behavior and geometrical properties of packings of elongated particles
- Statistics of the contact network in frictional and frictionless granular packings
- Force transmission in a packing of pentagonal particles
- Identification of rolling resistance as a shape parameter in sheared granular media
- The tail of the contact force distribution in static granular materials
- Friction vs Texture at the Approach of a Granular Avalanche
- Multiscale Analysis of the Stress State in a Granular Slope in Transition to Failure
- Dynamic Rearrangements and Packing Regimes in Randomly Deposited Two-Dimensional Granular Beds
- Short-time dynamics of a packing of polyhedral grains under horizontal vibrations
- Vibrational dynamics of confined granular material
- Force heterogeneities in particle assemblies: From order to disorder
Cited by in corpus (22)
- Granular materials composed of shape-anisotropic grains
- Rheology of dense granular flows for elongated particles
- Interaction network analysis in shear thickening suspensions
- Compression Driven Jamming of Athermal Frictionless Spherocylinders in Two Dimensions
- Compression- and Shear-Driven Jamming of U-Shaped Particles in Two Dimensions
- The Link Between Packing Morphology and the Distribution of Contact Forces and Stresses in Packings of Highly Non-Convex Particles
- Shear-Driven Flow of Athermal, Frictionless, Spherocylinder Suspensions in Two Dimensions: Stress, Jamming, and Contacts
- Jamming transition in non-spherical particle systems: pentagons vs. disks
- Complete mathematical theory of the jamming transition: A perspective
- Random sequential adsorption of partially ordered discorectangles onto a continuous plane
- Shear-Driven Flow of Athermal, Frictionless, Spherocylinder Suspensions in Two Dimensions: Particle Rotations and Orientational Ordering
- Stress propagation in locally loaded packings of disks and pentagons
- Exploring noisy Jeffery orbits: A combined Fokker-Planck and Langevin analysis in 2D and 3D
- Two approaches to quantification of force networks in particulate systems
- Universal cluster size distribution in a system of randomly spaced particles
- Comparison of compression vs shearing near jamming, for a simple model of athermal frictionless disks in suspension
- Jamming transition and normal modes of polydispersed soft particle packing
- Contact force measurements and local anisotropy in ellipses and disks
- The Roles of Size, Packing, and Cohesion in the Emergence of Force Chains in Granular Packings
- Collective alignment controls rotation frustration in granular flows of elongated particles
- Shear flow of frictional spheroids: Comparison between elongated and flattened particles
- Shear strength of wet granular materials: macroscopic cohesion and effective stress