Discontinuous shear thickening in dense suspensions: A force- space analysis

Abstract eng:
Shear jamming and discontinuous shear thickening are phenomena observed in granular materials or dense suspensions, and have been extensively studied in recent years using experiments and numerical simulations. It has become increasingly clear that frictional contacts between particles are necessary for these shear-induced transitions. We have recently developed a theoretical framework that analyzes the collective behavior of dry grains and suspensions using a representation in which, in addition to positions of grains, forces appear as independent statistical variables. In this talk we will present results of application of this framework to shear-induced transitions and demonstrate that in a force-space, which is dual to real space, these transitions show signatures of symmetry breaking and co-existence of phases.

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