Bearing performance limits with grease lubrification: the interaction of bearing design, operating conditions and grease properties

International audienc

Starved elastohydrodynamic lubrication theory: application to emulsions and greases

International audienceIn classical fluid lubrication the film thickness is mainly determined by entrainment velocity and oil viscosity. At high pressure, elastic deformation occurs changing the local geometry: this is the elastohydrodynamic lubrication regime (EHL). When a limited amount of lubricant is available to the contact, a component failure due to lubricant starvation can result. A new starvation model is presented, using the amount of oil on the surfaces as the key parameter controlling starvation. It is successfully applied to describe the contacts lubricated with multi-phase fluids such as emulsions and greases, which combine starvation with a very complex rheolog

Influence of cage clearance on bearing lubrication

International audienc

The transition between fully flooded and starved regimes in EHL

International audienc

Film thickness in point contacts under generalized Newtonian EHL conditions: Numérical and experimental analysis

International audienc