8 papers
Dislocation avalanche correlations
Jerome Weiss, M. -Carmen Miguel
Recently, mechanical tests on ice as well as dislocation dynamics simulations have revealed that plastic flow displays a scale-free intermittent dynamics characterized by dislocati…
Deblocking of interacting particle assemblies: from pinning to jamming
M. -Carmen Miguel, Jose S. Andrade, Stefano Zapperi
A wide variety of interacting particle assemblies driven by an external force are characterized by a transition between a blocked and a moving phase. The origin of this deblocking…
Dislocation jamming and Andrade creep
M. -Carmen Miguel, Alessandro Vespignani, Michael Zaiser +1
We simulate the glide motion of an assembly of interacting dislocations under the action of an external shear stress and show that the associated plastic creep relaxation follows A…
Modeling collective dislocation dynamics in ice single crystals
M. -Carmen Miguel, Alessandro Vespignani, Stefano Zapperi
We propose a model to study the plasticity of ice single crystals by numerical simulations. The model includes the long-range character of the interaction among dislocations, as we…
Complexity in dislocation dynamics: model
M. -Carmen Miguel, Alessandro Vespignani, Stefano Zapperi +2
We propose a numerical model to study the viscoplastic deformation of ice single crystals. We consider long-range elastic interactions among dislocations, the possibility of mutual…
Elasticity and melting of vortex crystals in anisotropic superconductors: Beyond the continuum regime
M. -Carmen Miguel, Mehran Kardar
The elastic moduli of vortex crystals in anisotropic superconductors are frequently involved in the investigation of their phase diagram and transport properties. We provide a deta…