166 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- ETH ZurichCH110 papers
- Universidade Federal do CearáBR46 papers
- Istituto per le Applicazioni del Calcolo Mauro PiconeIT20 papers
- Centre National de la Recherche ScientifiqueFR10 papers
- Centro de Física Teórica e Computacional10 papers
- University of LisbonPT8 papers
- University of StuttgartDE7 papers
- Harvard UniversityUS6 papers
- Physique et Mécanique des Milieux HétérogènesFR6 papers
- Cornell UniversityUS5 papers
- Institute for Biomedical EngineeringCH5 papers
- University of ZurichCH5 papers
20 papers · 1 filter
Nucleation of frictional slip: A yielding or a fracture process?
Miguel Castellano, Flavio Lorez, David Kammer
The onset of frictional sliding between contacting bodies under shear load is nucleated by the quasi-static growth of localized slip patches. After reaching a certain critical size…
Nucleation of frictional sliding by coalescence of microslip
Styfen Schär, Gabriele Albertini, David S. Kammer
The onset of frictional motion is mediated by the dynamic propagation of a rupture front, analogous to a shear crack. The rupture front nucleates quasi-statically in a localized re…
Stochastic Properties of Static Friction
Gabriele Albertini, Simon Karrer, Mircea D. Grigoriu +1
The onset of frictional motion is mediated by rupture-like slip fronts, which nucleate locally and propagate eventually along the entire interface causing global sliding. The stati…
Effective toughness of heterogeneous materials with rate-dependent fracture energy
Gabriele Albertini, Mathias Lebihain, François Hild +2
We investigate dynamic fracture of heterogeneous materials experimentally by measuring displacement fields as a rupture propagates through a periodic array of obstacles of controll…
Collapse of orthotropic spherical shells
Gautam Munglani, Falk K. Wittel, Roman Vetter +2
We report on the buckling and subsequent collapse of orthotropic elastic spherical shells under volume and pressure control. Going far beyond what is known for isotropic shells, a…
Progressive Collapse Mechanisms of Brittle and Ductile Framed Structures
Enrico Masoero, Falk K. Wittel, Hans J. Herrmann +1
In this paper, we study the progressive collapse of 3D framed structures made of reinforced concrete after the sudden loss of a column. The structures are represented by elasto-pla…
Hierarchical structures for a robustness-oriented capacity design
Enrico Masoero, Falk K. Wittel, Hans J. Herrmann +1
In this paper, we study the response of 2D framed structures made of rectangular cells, to the sudden removal of columns. We employ a simulation algorithm based on the Discrete Ele…
Coupled DEM-LBM method for the free-surface simulation of heterogeneous suspensions
A. Leonardi, F. K. Wittel, M. Mendoza +1
The complexity of the interactions between the constituent granular and liquid phases of a suspension requires an adequate treatment of the constituents themselves. A promising way…
Granular front formation in free-surface flow of concentrated suspensions
A. Leonardi, M. Cabrera, F. K. Wittel +4
Granular fronts are a common yet unexplained phenomenon emerging during the gravity driven free-surface flow of concentrated suspensions. They are usually believed to be the result…
Particle-fluid-structure interaction for debris flow impact on flexible barriers
Alessandro Leonardi, Falk K. Wittel, Miller Mendoza +2
Flexible barriers are increasingly used for the protection from debris flow in mountainous terrain due to their low cost and environmental impact. However, a numerical tool for rat…
Mixtures of functionalized colloids on substrates
Cristóvão Dias, Nuno Araújo, Margarida Telo da Gama
Patchy particles are a class of colloids with functionalized surfaces. Through surface functionalization, the strength and directionality of the colloidal interactions are tunable…
Analytical model for flux saturation in sediment transport
Thomas Pähtz, Eric J. R. Parteli, Jasper F. Kok +1
The transport of sediment by a fluid along the surface is responsible for dune formation, dust entrainment and for a rich diversity of patterns on the bottom of oceans, rivers, and…
Unexpected decoupling of stretching and bending modes in protein gels
Thomas Gibaud, Alessio Zaccone, Emanuela Del Gado +2
We show that gels formed by arrested spinodal decomposition of protein solutions exhibit elastic properties in two distinct frequency domains, both elastic moduli exhibiting a rema…
Linear stability analysis of transverse dunes
Hygor P. M. Melo, Eric J. R. Parteli, José S. Andrade +1
Sand-moving winds blowing from a constant direction in an area of high sand availability form transverse dunes, which have a fixed profile in the direction orthogonal to the wind.…
Finite Element Simulation of Dense Wire Packings
Roman Vetter, Falk K. Wittel, Norbert Stoop +1
A finite element program is presented to simulate the process of packing and coiling elastic wires in two- and three-dimensional confining cavities. The wire is represented by thir…
Unjamming dynamics: the micromechanics of a seismic fault model
M. Pica Ciamarra, E. Lippiello, C. Godano +1
The unjamming transition of granular systems is investigated in a seismic fault model via three dimensional Molecular Dynamics simulations. A two--time force--force correlation fun…
Shear-driven solidification of dilute colloidal suspensions
Alessio Zaccone, Daniele Gentili, Hua Wu +2
We show that the shear-induced solidification of dilute charge-stabilized (DLVO) colloids is due to the interplay between the shear-induced formation and breakage of large non-Brow…
Why do Particle Clouds Generate Electric Charges?
Thomas Pähtz, Hans J. Herrmann, Troy Shinbrot
Grains in desert sandstorms spontaneously generate strong electrical charges; likewise volcanic dust plumes produce spectacular lightning displays. Charged particle clouds also cau…
Simulation of Flow of Mixtures Through Anisotropic Porous Media using a Lattice Boltzmann Model
M. Mendoza, F. K. Wittel, H. J. Herrmann
We propose a description for transient penetration simulations of miscible and immiscible fluid mixtures into anisotropic porous media, using the lattice Boltzmann (LB) method. Our…
Shear Viscosity of Clay-like Colloids in Computer Simulations and Experiments
Martin Hecht, Jens Harting, Markus Bier +2
Dense suspensions of small strongly interacting particles are complex systems, which are rarely understood on the microscopic level. We investigate properties of dense suspensions…