Publications de Vladislav Yastrebov

The role of the roughness spectral breadth in elastic contact of rough surfaces (vol 107, pg 469, 2017)

Jean-François Molinari, Guillaume Anciaux, Vladislav Yastrebov

PERGAMON-ELSEVIER SCIENCE LTD2022

Modeling and simulation in tribology across scales: An overview

Jean-François Molinari, Guillaume Anciaux, Vladislav Yastrebov, Ramin Aghababaei, Gianluca Costagliola

2018

On the accurate computation of the true contact-area in mechanical contact of random rough surfaces

Jean-François Molinari, Guillaume Anciaux, Vladislav Yastrebov

We introduce a corrective function to compensate errors in contact area computations coming from mesh discretization. The correction is based on geometrical arguments, and apart from the contact area itself requires only one additional quantity to be compu ...

2017

The role of the roughness spectral breadth in elastic contact of rough surfaces

Jean-François Molinari, Guillaume Anciaux, Vladislav Yastrebov

We study frictionless and non-adhesive contact between elastic half-spaces with self-affine surfaces. Using a recently suggested corrective technique, we ensure an unprecedented accuracy in computation of the true contact area evolution under increasing pr ...

2017

Modeling Creeping Flow through a Closed Crack with a Self-Affine Geometry and an Extension to Permeability of Cracked Media, Poromechanics VI

Jean-François Molinari, Guillaume Anciaux, Vladislav Yastrebov

To model a creeping flow through closed cracks in cracked materials we study a normal mechanical contact between two elastic half-spaces with rough surfaces is studied. The roughness is modeled using a filtering technique in Fourier space: the root mean sq ...

2017

From infinitesimal to full contact between rough surfaces: Evolution of the contact area

Jean-François Molinari, Guillaume Anciaux, Vladislav Yastrebov

We carry out a statistically meaningful study on self-affine rough surfaces in elastic frictionless non-adhesive contact. We study the evolution of the true contact area under increasing squeezing pressure from zero up to full contact, which enables us to ...

Pergamon-Elsevier Science Ltd2015

The Contact of Elastic Regular Wavy Surfaces Revisited

Jean-François Molinari, Guillaume Anciaux, Vladislav Yastrebov

We revisit the classic problem of an elastic solid with a two-dimensional wavy surface squeezed against an elastic flat half-space from infinitesimal to full contact. Through extensive numerical calculations and analytic derivations, we discover previously ...

Springer/Plenum Publishers2014

The existence of a critical length scale in regularised friction

David Simon Kammer, Jean-François Molinari, Guillaume Anciaux, Vladislav Yastrebov

We study a regularisation of Coulomb's friction law on the propagation of local slip at an interface between a deformable and a rigid solid. This regularisation, which was proposed based on experimental observations, smooths the effect of a sudden jump in ...

Elsevier2014

A constrained-optimization methodology for the detection phase in contact mechanics simulations

Jean-François Molinari, Vladislav Yastrebov, Alejandro Marcos Aragon

The detection phase in computational contact mechanics can be subdivided into a global search and a local detection. When potential contact is detected by the former, a rigorous local detection determines which surface elements come or may come in contact ...

Wiley2013

On the Propagation of Slip Fronts at Frictional Interfaces

David Simon Kammer, Jean-François Molinari, Peter Spijker, Vladislav Yastrebov

The dynamic initiation of sliding at planar interfaces between deformable and rigid solids is studied with particular focus on the speed of the slip front. Recent experimental results showed a close relation between this speed and the local ratio of shear ...

Springer US2012

Contact between representative rough surfaces

Jean-François Molinari, Guillaume Anciaux, Vladislav Yastrebov

A numerical analysis of mechanical frictionless contact between rough self-affine elastic manifolds was carried out. It is shown that the lower cutoff wave number in surface spectra is a key parameter controlling the representativity of the numerical model ...

Amer Physical Soc2012