Dip of the granular shear stress.
Dip of the granular shear stress.
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DOI:
10.1103/physreve.86.061312
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发表时间:
2012-12
期刊:
影响因子:
--
通讯作者:
D. Krimer;Stefan Mahle;Mario Liu
中科院分区:
文献类型:
--
作者:
D. Krimer;Stefan Mahle;Mario Liu
Recent experiments reveal an unexpected dip of the shear stress as the shear rate increases, from the rate-independent regime to Bagnold flow. Employing granular solid hydrodynamics, it is shown that in uniform systems, such dips occur for given pressure or normal stress, but not for given density. If the shear rate is strongly nonuniform, enforcing a constant volume does not prevent the local density to vary, and a stress dip may still occur.