Abstract This paper mainly studies the tribological performance of friction pairs and poor lubrication during piston movement. Based on average Reynolds equation comprehensively considering variable viscosity density characteristics lubricating oil, a transient hydrodynamic model ring-cylinder liner pair is established. By solving established model, oil film thickness value, value other paramet...

Abstract Oil-in-water (O/W) emulsions are water-based lubricants and used as fire-resistant hydraulic fluids metalworking (MWFs) in industry. The (elasto-)hydrodynamic film-forming properties of O/W have been studied extensively literature. Typical elastohydrodynamic lubrication (EHL) behaviors revealed at low rolling speeds followed by a starved EHL regime elevated speeds. These self-prepared ...

In order to study the effect of surface roughness on lubrication performance an elastic support water-lubricated tilting pad thrust bearing, a mixed (ML) deterministic model is hereby presented based unified Reynolds equation model. This very incorporates elastic–plastic deformation asperities and polymer matrix pad, as well rubber support. The randomly distributed generated by mathematical sha...

The increasing demand for sustainable tribology has accelerated the development of environmentally friendly lubrication solutions such as water or water-related lubricants. Earlier works have reported on water-lubricated sliding silicon nitride (Si3N4) at high speeds, which can result in a superlow friction (μ < 0.01) owing to formation hydrodynamic films hydrophilic surface layers. Here, combi...

A full numerical methodology was developed for the elasto-hydrodynamic lubrication analysis of hip joint implants for the lubrication problem in spherical and conformal contacts. Typical results of a metal-on-metal hip implant were obtained to illustrate the applicability of the numerical methodology developed in the present study. INTRODUCTION The important effect of lubrication on long-term s...

The paper presents results obtained using a transient analysis technique for point contact elastohydrodynamic lubrication (EHL) problems based on a formulation that effectively couples the elastic and hydrodynamic equations. Results are presented for transverse ground surfaces in an elliptical contact that show severe ®lm thinning at the transverse limits of the contact area. This thinning is c...