期刊
PHYSICAL REVIEW E
卷 98, 期 2, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevE.98.022905
关键词
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资金
- Agence Nationale de la Recherche Grant [ANR-16-CE30-0022]
- Agence Nationale de la Recherche (ANR) [ANR-16-CE30-0022] Funding Source: Agence Nationale de la Recherche (ANR)
We present a thorough study of the plastic response of a granular material progressively loaded. We study experimentally the evolution of the plastic field from a homogeneous one to a heterogeneous one and its fluctuations in terms of incremental strain. We show that the plastic field can be decomposed in two components evolving on two decoupled strain increment scales. We argue that the slowly varying part of the field can be identified with the so-called fluidity field introduced recently to interpret the rheological behavior of amorphous materials. This fluidity field progressively concentrates along a macroscopic direction corresponding to the Mohr-Coulomb angle.
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