Strain hardening by sediment transport

Autor: Fernando D. Cúñez, Erick M. Franklin, Morgane Houssais, Paulo Arratia, Douglas J. Jerolmack
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Physical Review Research, Vol 4, Iss 2, p L022055 (2022)
Druh dokumentu: article
ISSN: 2643-1564
DOI: 10.1103/PhysRevResearch.4.L022055
Popis: The critical fluid-shear stress for the onset of sediment transport, θ_{c}, varies with the history of applied shear. This effect has been primarily attributed to compaction; the role of shear jamming is less explored. We examine the response of a granular bed to fluid-shear stress cycles of varying magnitude and direction, and determine isotropic and anisotropic contributions. Creep and bed-load transport result in direction-dependent strain hardening for θ/θ_{c}
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