Amplitude Reduction of Waviness in Transient EHL Line Contacts
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2023, Tribology InternationalA homogenized micro-elastohydrodynamic lubrication model: Accounting for non-negligible microscopic quantities
2019, Tribology InternationalBoundary layers: Unifying the impact and rolling EHL point contacts
2018, Tribology InternationalCitation Excerpt :Several authors simulated measured surface roughness profiles in point contacts moving through the contact and many other phenomena, e.g. see Ref. [17]. As an alternative to the simulations with measured roughness proflies, a group of researchers developed a conceptual approach to derive an engineering relation for roughness deformation from the study of the deformation of harmonic waviness, e.g. see Refs. [18–22]. It was found that the deformation was governed by a unifying mechanism reflected by a single nondimensional parameter representing the ratio of inlet length to wavelength which was shown to generalize for all contacts including starved ones [23].
Effect of surface roughness on lubricant film breakdown and transition from EHL to mixed lubrication
2016, Tribology InternationalCitation Excerpt :It was developed through systematic numerical study of harmonic roughness features in EHL contacts operated under pure rolling conditions concluding that harmonic component deformation is wavelength dependent where long wavelengths are deformed more than short wavelengths. Since its development it has been extended to the rolling/sliding conditions (considering both roughness deformation and complementary wave effect), non-Newtonian behavior etc. [13–32]. Based on published results this approach can be considered as perspective way for the fast prediction of real roughness surfaces behavior.
Characteristic times in transient thermal elastohydrodynamic line contacts
2015, Tribology InternationalExperimental and numerical study of the effect of raceway waviness on the oil film in thrust ball bearings
2014, Tribology InternationalCitation Excerpt :This method does not provide quantitative information and the results can be influenced by working environment, therefore it is not suited to measure the surface waviness in high-precision bearings. The theoretical study of the effect of waviness on EHL contacts has mainly focussed on harmonic patterns with a relatively short wavelength [4–8]. Measured raceway waviness in real ball bearings, and its effect on oil film variation have not been reported yet.