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* Corresponding author 1 LaMCoS - Laboratoire de Mécanique des Contacts et des Structures Villeurbanne

Abstract : In this work, we consider several types of lubricants - including non-Newtonian fluids - that were studied under various operating conditions leading us to explore a wide range of dimensionless parameters. The experimental results are compared with predictions given by the usual analytical EHL relationships and by more recently developed models. This broad comparison conducted with particular emphasis on minimum film thickness hm showed a fair agreement between experimental data and a few predictions including some obtained from extended models. Commonly used elasto-hydrodynamic lubrication EHL models did not systematically gave accurate hm estimation, whereas minimum film thickness not only is a yield value but also serves as a key parameter in estimating lubrication regimes.

Keywords : EHL film thickness measurements minimum film thickness EHL models lubricant properties non-Newtonian behaviour





Author: Chaomleffel Jean Pierre - Dalmaz Gérard - Philippe Vergne -

Source: https://hal.archives-ouvertes.fr/



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