135 citations · 308 across the 12 of their papers we have counts for
12 papers
Dynamical heterogeneities of thermal creep in pinned interfaces
Tom W. J. de Geus, Alberto Rosso, Matthieu Wyart
Disordered systems under applied loading display slow creep flows at finite temperature, which can lead to the material rupture. Renormalization group arguments predicted that cree…
Armouring of a frictional interface by mechanical noise
Elisa El Sergany, Matthieu Wyart, Tom W. J. de Geus
A dry frictional interface loaded in shear often displays stick-slip. The amplitude of this cycle depends on the probability that a microscopic event nucleates a rupture and on the…
Stick-slip in a stack: how slip dissonance reveals aging
Samuel Poincloux, Pedro M. Reis, Tom W. J. de Geus
We perform physical and numerical experiments to study the stick-slip response of a stack of slabs in contact through dry frictional interfaces driven in quasistatic shear. The rat…
Scaling theory for the statistics of slip at frictional interfaces
Tom W. J. de Geus, Matthieu Wyart
Slip at a frictional interface occurs via intermittent events. Understanding how these events are nucleated, can propagate, or stop spontaneously remains a challenge, central to ea…
Scaling description of creep flow in amorphous solids
Marko Popović, Tom W. J. de Geus, Wencheng Ji +2
Amorphous solids such as coffee foam, toothpaste or mayonnaise display a transient creep flow when a stress is suddenly imposed. The associated strain rate is commonly found to…
Mean-field description for the architecture of low-energy excitations in glasses
Wencheng Ji, Tom W. J. de Geus, Elisabeth Agoritsas +1
In amorphous materials, groups of particles can rearrange locally into a new stable configuration. Such elementary excitations are key as they determine the response to external st…
Thermally activated flow in models of amorphous solids
Marko Popović, Tom W. J. de Geus, Wencheng Ji +1
Amorphous solids yield at a critical value of the imposed stress through a dynamical phase transition. While sharp in athermal systems, the presence of thermal fluctuatio…
Energy-based comparison between the Fourier--Galerkin method and the finite element method
Jaroslav Vondřejc, Tom W. J. de Geus
The Fourier-Galerkin method (in short FFTH) has gained popularity in numerical homogenisation because it can treat problems with a huge number of degrees of freedom. Because the me…
Fracture initiation in multi-phase materials: a statistical characterization of microstructural damage sites
T. W. J. de Geus, J. E. P. van Duuren, R. H. J. Peerlings +1
Understanding the microstructural influence on the failure mechanisms in multi-phase materials calls for the identification of the worst-case scenario. This necessitates a statisti…
Finite strain FFT-based non-linear solvers made simple
T. W. J. de Geus, J. Vondrejc, J. Zeman +2
Computational micromechanics and homogenization require the solution of the mechanical equilibrium of a periodic cell that comprises a (generally complex) microstructure. Technique…
Microscopic plasticity and damage in two-phase steels: on the competing role of crystallography and phase contrast
T. W. J. de Geus, F. Maresca, R. H. J. Peerlings +1
This paper unravels micromechanical aspects of metallic materials whose microstructure comprises grains of two or more phases. The local plastic response is determined by (i) the r…
Competing damage mechanisms in a two-phase microstructure: how microstructure and loading conditions determine the onset of fracture
T. W. J. de Geus, R. H. J. Peerlings, M. G. D. Geers
This paper studies the competition of fracture initiation in the ductile soft phase and in the comparatively brittle hard phase in the microstructure of a two-phase material. A sim…