Shear Is Not Always Simple: Rate-Dependent Effects of Flow Type on Granular Rheology

Autor:	Clemmer, Joel T., Srivastava, Ishan, Grest, Gary S., Lechman, Jeremy B.
Rok vydání:	2021
Předmět:	Condensed Matter - Soft Condensed Matter
Zdroj:	Phys. Rev. Lett. 127, 268003(2021)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevLett.127.268003
Popis:	Despite there being an infinite variety of types of flow, most rheological studies focus on a single type such as simple shear. Using discrete element simulations, we explore bulk granular systems in a wide range of flow types at large strains and characterize invariants of the stress tensor for different inertial numbers and interparticle friction coefficients. We identify a strong dependence on the type of flow which grows with increasing inertial number or friction. Standard models of yielding, repurposed to describe the dependence of the stress on flow type in steady-state flow and at finite rates, are compared with data. Comment: 6 pages, 5 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2107.10085 Zobrazit plný text záznamu View this record from Arxiv