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Guillaume Anciaux

Publications associées (47)

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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, Vladislav Yastrebov, Guillaume Anciaux

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

Normal adhesive contact on rough surfaces: efficient algorithm for FFT-based BEM resolution

Jean-François Molinari, Valentine Ginette Madeleine Rey, Guillaume Anciaux

We introduce a numerical methodology to compute the solution of an adhesive normal contact problem on rough surfaces with the Boundary Element Method. Based on the Fast Fourier Transform and the Westergaard’s fundamental solution, the proposed algorithm en ...

2017

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

Jean-François Molinari, Vladislav Yastrebov, Guillaume Anciaux

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

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

Jean-François Molinari, Vladislav Yastrebov, Guillaume Anciaux

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

Interface Stresses in Cracked Concrete: Testing for Review of Its Fundamentals, High Tech Concrete: Where Technology and Engineering Meet

Aurelio Muttoni, Max Tirassa, Guillaume Anciaux, Miguel Fernández Ruiz

Aggregate interlock is one of the most significant stress transfer actions in cracked concrete and its understanding is fundamental in order to predict the strength of many concrete structures, particularly members failing in shear. Several test programmes ...

2017

Mobility law of dislocations with several character angles and temperatures in FCC Aluminum

Jean-François Molinari, Guillaume Anciaux, Jaehyun Cho

We study the mobility law of dislocations in aluminum as an important building block for the development of a multiscale method that couples an atomistic model with discrete dislocation dynamics in 3d (\eg CADD3d). Straight dislocations of arbitrary charac ...

Elsevier2017

Toward a 3D coupled atomistic and discrete dislocation dynamics simulation: dislocation core structures and Peierls stresses with several character angles in FCC aluminum

Jean-François Molinari, Guillaume Anciaux, Till Junge, Jaehyun Cho

We present a robust method to obtain the displacement field of a dislocation core, which is one of the building blocks for the development of a direct multiscale method coupling an atomistic domain to a discrete dislocation dynamics engine in 3D (e.g. CADD ...

2015

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

Dynamic stability of displacement-based atomistic/continuum coupling methods

Jean-François Molinari, Guillaume Anciaux, Till Junge

We show that concurrent atomistic/continuum displacement-coupling methods are inherently unstable in the context of fully dynamic problems at finite temperature. The fundamental origin of the instability is the displacement coupling of two material descrip ...

Elsevier2015

Seismic safety evaluation of an arch dam with Akantu FE code developed at EPFL

Jean-François Molinari, Guillaume Anciaux, Mauro Corrado, Sacha Roger Laffely, Damien Scantamburlo

2015

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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, Vladislav Yastrebov, Guillaume Anciaux

2017

Interface Stresses in Cracked Concrete: Testing for Review of Its Fundamentals, High Tech Concrete: Where Technology and Engineering Meet

Aurelio Muttoni, Max Tirassa, Guillaume Anciaux, Miguel Fernández Ruiz

2017

Mobility law of dislocations with several character angles and temperatures in FCC Aluminum

Jean-François Molinari, Guillaume Anciaux, Jaehyun Cho

Elsevier2017

Toward a 3D coupled atomistic and discrete dislocation dynamics simulation: dislocation core structures and Peierls stresses with several character angles in FCC aluminum

Jean-François Molinari, Guillaume Anciaux, Till Junge, Jaehyun Cho

2015