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Planar Equilibria of an Elastic Rod Wrapped Around a Circular Capstan

Publications associées (32)

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Modelling Plasticity in Nanoscale Contact

Till Junge

The problem of mechanical contact is a truly multiscale one. Atomistic effects that violate continuum theory dominate the deformations of contacting asperities, while the interactions between distant asperities occur through long-range elasticity. This the ...

EPFL2014

Deformation capacity and strength of brick masonry spandrels

Katrin Beyer

In unreinforced masonry (URM) structures vertical walls are connected by horizontal spandrel elements. Spandrels have been subjected to extensive damage during earthquakes and are often the first elements within a URM building to crack or fail. If URM buil ...

2014

A cohesive element model for mixed mode loading with frictional contact capability

Jean-François Molinari, Leonardo Snozzi

We present a model that combines interface debonding and frictional contact. The onset of fracture is explicitly modeled using the well-known cohesive approach. Whereas the debonding process is controlled by a new extrinsic traction separation law, which a ...

Wiley-Blackwell2013

A meso-mechanical model for concrete under dynamic tensile and compressive loading

Jean-François Molinari, Leonardo Snozzi, Fabrice Gatuingt

We present a computational model, which combines interface debonding and frictional contact, in order to investigate the response of concrete specimens subjected to dynamic tensile and compressive loading. Concrete is modeled using a meso-mechanical approa ...

Springer Verlag2012

Brownian motion in a Maxwell fluid

Sylvia Jeney, Matthias Grimm

The equilibrium dynamics of a spherical particle immersed in a complex Maxwell fluid is analyzed in terms of velocity autocorrelation function (VACF), mean-square displacement (MSD), and power spectral density (PSD). We elucidate the role of hydrodynamic m ...

Royal Society of Chemistry2011

Multiscale modeling of a thermo-mechanical contact problem

Jean-François Molinari, Guillaume Anciaux, Srinivasa Babu Ramisetti

Friction is an atomistic phenomena occurring between sliding surfaces and involves mechanisms influenced by lattice vibrations, asperities, heat fluxes, long range elasticity, plasticity. Thermal transfer is one such process contributing toward the complex ...

2010

Gravity-driven slug motion in capillary tubes

Dani Or, Ivan Lunati

The velocity of a liquid slug falling in a capillary tube is lower than predicted for Poiseuille flow due to presence of menisci, whose shapes are determined by the complex interplay of capillary, viscous, and gravitational forces. Due to the presence of m ...

2009

Sliding-induced adhesion of stiff polymer microfiber arrays. II. Microscale behaviour

Bryan Edward Schubert

The adhesive pads of geckos provide control of normal adhesive force by controlling the applied shear force. This frictional adhesion effect is one of the key principles used for rapid detachment in animals running up vertical surfaces. We developed polypr ...

2008

Atomic force microscopy studies of nanotribology and nanomechanics

Ismaël Palaci

This thesis comes within the scope of tribology studies at the nanometer scale. The experimental techniques used in this work are essentially related to atomic force microscopy, which gives a direct access to the topography and forces of the studied system ...

EPFL2007

With applications to the periodontal ligament: a nonlinear large strain viscoelastic law

Jörn Justiz

The soft tissue, called periodontal ligament (PDL), that connects the alveolar bone and the tooth root accounts to a large extent for the mobility, stress-distribution and, due to its viscoelastic properties, damping of the bone-tooth complex. The accurate ...

EPFL2004