6 papers
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…
Boundary effects on flux penetration in disordered superconductors
Andre Auto Moreira, Jose S. Andrade, Josue Mendes Filho +1
We investigate flux penetration in a disordered type II superconductor by molecular dynamics simulations of interacting vortices. We focus on the effect of different boundary condi…
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…
Depinning of a dislocation: the influence of long-range interactions
Stefano Zapperi, Michael Zaiser
The theory of the depinning transition of elastic manifolds in random media provides a framework for the statistical dynamics of dislocation systems at yield. We consider the case…