Dynamical yield criterion for granular matter from first principles.
basic_science · Level V
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- Record sourced from PubMed, PMID 38632790.
- Also identified by DOI 10.1103/PhysRevE.109.034901.
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Abstract
We investigate, using a recently developed model of liquid state theory describing the rheology of dense granular flows, how a yield stress appears in granular matter at the yielding transition. Our model allows us to predict an analytical equation of the corresponding dynamical yield surface, which is compared to the usual models of solid fracture. In particular, this yield surface interpolates between the typical failure behaviors of soft and hard materials. This work also underlines the central role played by the effective friction coefficient at the yielding transition.