A response function perspective on yielding of wet granular matter
When dry ganular matter is tilted beyond a critical angle $\theta _{c}$, grains start to flow until a state is reached where the slope of the surface is smaller than $\theta _{c}$. In dry granulates this relaxation preferentially involves surface fluxes. In contrast wet granulates yield in the bulk....
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Published in | Europhysics letters Vol. 87; no. 1; pp. 14002 - p1-6 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
IOP Publishing
01.07.2009
EDP Sciences |
Subjects | |
Online Access | Get full text |
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Summary: | When dry ganular matter is tilted beyond a critical angle $\theta _{c}$, grains start to flow until a state is reached where the slope of the surface is smaller than $\theta _{c}$. In dry granulates this relaxation preferentially involves surface fluxes. In contrast wet granulates yield in the bulk. We uncover the origin of this behaviour by focusing on the structure of the balance equations of the forces, rather than applying a continuum model. The predictive power of the approach is demonstrated by a parameter-free prediction of the yielding of 2D packings with thermal motion and mass disorder. |
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Bibliography: | publisher-ID:epl11960 ark:/67375/80W-ZM422QCH-G istex:350E5823F2CBDC141124BE100CED90B7FCEF3A36 ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
ISSN: | 0295-5075 1286-4854 |
DOI: | 10.1209/0295-5075/87/14002 |