Concept

Rolling

Publications associées (33)

DESIGN, FABRICATION, AND CHARACTERIZATION OF AFM TIPS FOR TENSIONS MEASUREMENT AND MANIPULATION OF FLUID INTERFACES

Dynamic wetting phenomena lack of a proper qualitative and quantitative characterization, especially at the micro and nanoscale. The project focuses on the design and fabrication of AFM tips capable of measuring forces and energies involved in wetting phen ...

2015

Wear at the asperity level: An atomistic viewpoint

Jean-François Molinari, Ramin Aghababaei, Derek Warner

Tribological problems are particularly difficult to comprehend. Different physical mechanisms (including the environment, plastic deformation, third body interactions, phase transformations, recrystallization) interact at disparate length and time scales. ...

2015

The role of viscoelasticity on heterogeneous stress fields at frictional interfaces

Jean-François Molinari, Mathilde Edmée Lucette Radiguet de la Bastaie, David Simon Kammer

We investigate the evolution of heterogeneous stress states along frictional in- terfaces. Using finite-element simulations, we model the occurrence of precur- sory slip sequences on a deformable-deformable as well as a deformable-rigid interface between t ...

Elsevier2015

NANOTRIBOLOGICAL RESPONSES OF A MOLECULARLY THIN LUBRICANT CONFINED BETWEEN ROUGH SURFACES

Jean-François Molinari, Ramin Aghababaei

Recent innovations and developments in the field of nanotechnology and subsequent advent of miniaturized moving components have led scientists to extensively investigate the atomic-scale origins of friction and lubrication. According to the classical Strib ...

2015

Path-loss and car-body-effect characterization for smart tires communications at UWB and ISM bands

Pierre-André Farine, Cyril Botteron, Christian Robert, Gabriele Tasselli, Saeed Ghamari, Yi Guo

Next generation of smart tires will improve the safety and stability of the vehicle by monitoring road parameters, such as pavement and rolling conditions, with sensors placed on tire surface. Between the tread and the metal belt of the tire there are only ...

IEEE2014

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 Flying Robot with Adaptive Morphology for Multi-Modal Locomotion

Dario Floreano, Ludovic Daler, Julien Jean Denis Nicolas Lecoeur, Patrizia Bernadette Hählen

Most existing robots are designed to exploit only one single locomotion mode, such as rolling, walking, flying, swimming, or jumping, which limits their flexibility and adaptability to different environments where specific and different locomotion capabili ...

2013

Microfluidics for in vitro biomimetic shear stress-dependent leukocyte adhesion assays

Elena Bianchi

Recruitment of leukocytes from blood to tissues is a multi-step process playing a major role in the activation of inflammatory responses. Tethering and rolling of leukocytes along the vessel wall, followed by arrest and transmigration through the endotheli ...

Elsevier2013

Load dependence of oxidative wear in metal/ceramic tribocouples in fretting environment

Abhishek Tewari

For a large number of non-oxideceramic/metal as well as for non-oxide particulate reinforced composite/metal tribocouples,oxidative wear is reported to play a major role in the overall damage and material removal process.The designing of new materials with ...

2012

Nonlinear Train-Bridge Lateral Interaction Using a Simplified Wheel-Rail Contact Method Within a Finite Element Framework

Pablo Antolin Sanchez

The evaluation of running safety of railway vehicles on viaducts requires the study of lateral dynamics for the coupled vehicle-bridge system. This includes the structural deformation of the bridge, the vehicle multibody dynamics, and the consideration of ...

2012

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