Concept
Fretting
Publications associées (38)
A story of two transitions: From adhesive to abrasive wear and from ductile to brittle regime
Jean-François Molinari, Sacha Zenon Wattel
Atomistic simulations performed with a family of model potential with tunable hardness have proven to be a great tool for advancing the understanding of wear processes at the asperity level. They have been instrumental in finding a critical length scale, w ...
2024Effect of wear particles and roughness on nanoscale friction
Jean-François Molinari, Enrico Milanese, Tobias Brink
Frictional contacts lead to the formation of a surface layer called the third body, consisting of wear particles and structures resulting from their agglomerates. Its behavior and properties at the nanoscale control the macroscopic tribological performance ...
2022Understanding the mechanisms of adhesive wear for heterogeneous materials through atomistic simulations
Jean-François Molinari, Antonio Joaquin Garcia Suarez, Sacha Zenon Wattel
When two rough surfaces slide against each other, two main behaviors can be observed at the asperity level: A ductile behavior where the asperities tend to smooth out or a brittle behavior where the asperities detach and form debris. Recently, a critical l ...
ELSEVIER2022Adhesive wear with a coarse-grained discrete element model
Jean-François Molinari, Son-Jonathan Pham-Ba
The use of molecular dynamics (MD) simulations has led to promising results to unravel the atomistic origins of adhesive wear, and in particular for the onset of wear at nanoscale surface asperities. However, MD simulations come with a high computational c ...
ELSEVIER SCIENCE SA2022Triple Crossed Flexure Pivot Based on a Zero Parasitic Center Shift Kinematic Design
Simon Nessim Henein, Etienne Frédéric Gabriel Thalmann
Thanks to their absence of play, absence of contact friction and possible monolithic fabrication, flexure pivots offer advantages over traditional bearings in small-scale, high accuracy applications and environments where lubrication and wear debris are pr ...
2022Breakdown of Reye's theory in nanoscale wear
Jean-François Molinari, Antonio Joaquin Garcia Suarez, Tobias Brink
Building on an analogy to ductile fracture mechanics, we quantify the size of debris particles created during adhesive wear. Earlier work suggested a linear relation between tangential work and wear debris volume, assuming that the debris size is proportio ...
2022