August 28, 2022 to September 1, 2022
Serbian Academy of Sciences and Arts – SASA
Europe/Belgrade timezone

Non-equilibrium molecular dynamics investigation of a model ionic liquid lubricant for heavy-duty applications

S06-CMPSP-227
Aug 30, 2022, 6:00 PM
1h 30m
Restaurant (Serbian Academy of Sciences and Arts)

Restaurant

Serbian Academy of Sciences and Arts

Board: S06-CMPSP-227
Poster presentation S06 Condensed Matter Physics and Statistical Physics Poster session

Speaker

Igor Stanković (Scientific Computing Laboratory, Center for the Study of Complex Systems,Institute of Physics Belgrade, University of Belgrade, Pregrevica 118, Belgrade, 11080, Serbia)

Description

In the current work, we present a modeling approach for simulating mesoscopic phenomena related to lubrication. Our geometry allows a variable confinement gap and a varying amount of lubricant in the gap. We have implemented and compared several coarse-grain molecular dynamics descriptions of an ionic liquid (spherical model and model with cation tail) as a lubricant that can expand into lateral reservoirs. The results have revealed two regimes of lubrication, and elastohydrodynamic one under low loads and one with low, velocity-independent specific friction, under high loads. The observed steep rise of normal forces at small plate-to-plate distances is an interesting behavior that could potentially be exploited for preventing solid-solid contact and wear.

Primary authors

Igor Stanković (Scientific Computing Laboratory, Center for the Study of Complex Systems,Institute of Physics Belgrade, University of Belgrade, Pregrevica 118, Belgrade, 11080, Serbia) Miljan Dašić (Scientific Computing Laboratory, Center for the Study of Complex Systems,Institute of Physics Belgrade, University of Belgrade, Pregrevica 118, Belgrade, 11080, Serbia)

Presentation materials

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