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Ductile-to-brittle transition and yielding in soft amorphous materials: perspectives and open questions
Soft amorphous materials are viscoelastic solids ubiquitously found around us, from clays
and cementitious pastes to emulsions and physical gels encountered in food or biomedical …
and cementitious pastes to emulsions and physical gels encountered in food or biomedical …
Microscopic description of the intermittent dynamics driving logarithmic creep
Disordered materials under an imposed forcing can display creep and aging effects,
accompanied by intermittent, spatially heterogeneous dynamics. We propose a unifying …
accompanied by intermittent, spatially heterogeneous dynamics. We propose a unifying …
Soft matrix: Extracting inherent length scales in sheared amorphous solids
Amorphous solids yield upon crossing a strain threshold, after an initial elastic response,
when subjected to mechanical deformation. The yielding process is characterized by local …
when subjected to mechanical deformation. The yielding process is characterized by local …
Shear banding as a cause of nonmonotonic stress relaxation after flow cessation
Recent flow cessation experiments on soft materials have shown a counterintuitive
nonmonotonic relaxation of the shear stress: following the switch off of a steady imposed …
nonmonotonic relaxation of the shear stress: following the switch off of a steady imposed …
Memory of shear flow in soft jammed materials
Cessation of flow in yield stress fluids results in a stress relaxation process that eventually
leads to a finite residual stress. Both the rate of stress relaxation and the magnitude of the …
leads to a finite residual stress. Both the rate of stress relaxation and the magnitude of the …
Stress correlations in near-crystalline packings
We derive exact results for stress correlations in near-crystalline systems in two and three
dimensions. We study energy minimized configurations of particles interacting through …
dimensions. We study energy minimized configurations of particles interacting through …