Force and Flow Transition in Plowed Granular Media
نویسندگان
چکیده
منابع مشابه
Force and flow transition in plowed granular media.
We use plate drag to study the response of granular media to localized forcing as a function of volume fraction ϕ. A bifurcation in the force and flow occurs at the onset of dilatancy ϕc. Below ϕc rapid fluctuations in the drag force F(D) are observed. Above ϕc fluctuations in F(D) are periodic and increase in magnitude with ϕ. Velocity field measurements indicate that the bifurcation in F(D) r...
متن کاملForce and flow at the onset of drag in plowed granular media.
We study the transient drag force FD on a localized intruder in a granular medium composed of spherical glass particles. A flat plate is translated horizontally from rest through the granular medium to observe how FD varies as a function of the medium's initial volume fraction, ϕ. The force response of the granular material differs above and below the granular critical state, ϕc, the volume fra...
متن کاملGlass transition in granular media
– In the framework of schematic hard spheres lattice models for granular media we investigate the phenomenon of the " jamming transition ". In particular, using Edwards' approach, by analytical calculations at a mean field level, we derive the system phase diagram and show that " jamming " corresponds to a phase transition from a " fluid " to a " glassy " phase, observed when crystallization is...
متن کاملNetwork flow model of force transmission in unbonded and bonded granular media.
An established aspect of force transmission in quasistatic deformation of granular media is the existence of a dual network of strongly versus weakly loaded particles. Despite significant interest, the regulation of strong and weak forces through the contact network remains poorly understood. We examine this aspect of force transmission using data on microstructural fabric from: (I) three-dimen...
متن کاملThe jamming transition of Granular Media
A statistical mechanical approach to granular material is proposed. Using lattice models from standard Statistical Mechanics and results from a mean field replica approach we find a jamming transition in granular media closely related to the glass transition in super-cooled liquids. These models reproduce the logarithmic relaxation in granular compaction and reversible-irreversible lines, in ag...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review Letters
سال: 2010
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.105.128301