Jamming and shear for granular materials

This paper describes a series of experiments which have explored systems of frictional disks that have been prepared near jamming and then subjected to shear strain. A key observation is that below a density (described by packing fraction, ) of about J ≃ 0.84, it is possible to prepare stress-free states, and then by applying shear, traverse states that are fragile (highly anisotropic), shear jammed, and then increasingly isotropic. The anisotropy of these states is a dominante feature in the shear jamming process, which differs from the Liu-Nagel scenario. The evolution of these states suggests that an activated process in the context of a force (or stress) ensemble characterizes the stress evolution during cyclic strain.

Bibliographic Details

Main Authors:	Behringer, R.P., Dijksman, Joshua, Ren, Jie, Zhang, Jie, Majmudar, Trushant, Chakraborty, Bulbul, Bi, Daipeng, Tordesillas, Antoinette
Format:	Article in monograph or in proceedings biblioteca
Language:	English
Subjects:	Shear jamming, activated processes, force networks,
Online Access:	https://research.wur.nl/en/publications/jamming-and-shear-for-granular-materials
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