Based on the sealing mechanism of reciprocating seal, inverse-hydrodynamic-lubrication (IHL) method was adopted in this study to solve Reynolds equation, and a multi-field coupled seal mixed lubrication numerical model established. Considering seals used for aircraft actuators as an example, we obtained performance parameters such leakage friction at different oil pressures, speeds, temperature...

This paper shows the mixed lubrication analysis between the vane tip and rolling piston in a rotary refrigerant compressor, coupling the motion equations of vane and rolling piston, the elastohydrodynamic lubrication (EHL) analysis of line contact and the equations of viscosity characteristics of lubricating oil as a function of oil pressure, oil temperature and concentration of refrigerant. Th...

In this study, a transient, non-Newtonian, mixed elastohydrodynamic lubrication (EHL) model of involute spur gear tooth contacts is proposed. Unlike the contact between two cylindrical rollers, spur gear contacts experience a number of time-varying contact parameters including the normal load, radii of curvature, surface velocities, and slide-toroll ratio. The proposed EHL model is designed to ...

Numerical analysis for mixed lubrication has been performed in order to investigate the characteristics of sliding surface vane a rotary compressor. The modified Reynolds equation and elastic contact equation, considering roughness, are solved as coupled problem. Using this analysis, investigated by parameter survey on design parameters such vane-slot length clearance between vaneslot. It is fo...

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

The present study aims to establish a mixed lubrication model for staved stern tube bearings lubricated with water, in which the average Reynolds equation and KE elastic–plastic contact are introduced calculate hydrodynamic pressure pressure, respectively. difference behaviors between circular- flat-staved is compared; moreover, effects of number staves on mixed-lubrication performance these tw...

Surface texturing has been shown to be an effective modification approach for improving tribological performance. This study examined the friction reduction effect generated by square dimples of different sizes and geometries. Dimples were fabricated on the surface of ASP2023 steel plates using femtosecond laser-assisted surface texturing techniques, and reciprocating sliding line contact tests...

Friction, lubrication, and wear have a strong influence on the performance and behavior of mechanical systems. This paper deals with different friction models for sliding contacts running under different conditions. The models presented are suited to different situations, depending on the type of contact, running conditions, and the behavior of interest. The models will be discussed from simula...

This paper focuses on the mathematical modeling of axial piston pump through dividing the failure development of friction pair into lubrication, mixed lubrication and abrasion. Directing to the wedge-shaped oil film between cylinder block and valve plate, the support force distribution under the temperature variance was obtained. Considering the rough peak of valve plate, the contact load model...