Anisotropy of Weakly Vibrated Granular Flows

Abstract

We experimentally probe the anisotropy of the fabric of weakly vibrated, flowing granular media. Depending on the driving parameters --- flow rate and vibration strength --- this anisotropy varies significantly. We show how the anisotropy collapses when plotted as function of the driving stresses, uncovering a direct link between stresses and anisotropy. Moreover, our data suggests that for small anisotropies, the shear stresses vanish. Anisotropy of the fabric of granular media thus plays a crucial role in determining the rheology of granular flows.

References in corpus (5)

• Continuum modeling of mechanically-induced creep in dense granular materials
• Role of gravity or confining pressure and contact stiffness in granular rheology
• Sheared force-networks: anisotropies, yielding and geometry
• Rheology of Weakly Vibrated Granular Media
• Nonlocal Granular Rheology: Role of Pressure and Anisotropy

Cited by in corpus (1)

• Criticality in vibrated frictional flows at finite strain rate