X-ray tomography investigation of cyclically sheared granular materials
arXiv:2010.12832 · doi:10.1103/PhysRevLett.126.048002
Abstract
We perform combined X-ray tomography and shear force measurements on a cyclically sheared granular system with highly transient behaviors, and obtain the evolution of microscopic structures and the macroscopic shear force during the shear cycle. We explain the macroscopic behaviors of the system based on microscopic processes, including the particle level structural rearrangement and frictional contact variation. Specifically, we show how contact friction can induce large structural fluctuations and cause significant shear dilatancy effect for granular materials, and we also construct an empirical constitutive relationship for the macroscopic shear force.
arXiv comment26 pages, 4 figures
References in corpus (13)
- Dynamics of Viscoplastic Deformation in Amorphous Solids
- Rheology of Soft Glassy Materials
- Deformation and Failure of Amorphous Solidlike Materials
- Granular materials flow like complex fluids
- Effective Temperatures of a Driven System Near Jamming
- Frictionless bead packs have macroscopic friction, but no dilatancy
- Logarithmic rate dependence in deforming granular materials
- Rearrangements and Dilatancy for Sheared Dense Materials
- The Statistical Physics of Athermal Materials
- Experimental measurement of an effective temperature for jammed granular materials
- Structural and Topological Nature of Plasticity in Sheared Granular Materials
- Volume fluctuations and geometrical constraints in granular packs
- Stress - Strain Rate Relation in Plug-Free Flow of Dense Granular Matter
Cited by in corpus (7)
- Experimental Test on Edwards Volume Ensemble of Tapped Granular Packings
- Non-linear elasticity, yielding and entropy in amorphous solids
- Equivalence of fluctuation-dissipation and Edwards' temperature in cyclically sheared granular systems
- Geometry-controlled phase transition in vibrated granular media
- Influence of Roughness on Granular Avalanches
- Loss of memory of an elastic line on its way to limit cycles
- Elasto-frictional reduced model of a cyclically sheared container filled with particles