Abstract Existing studies primarily focus on stiffness and damping under full-film lubrication or dry contact conditions. However, most lubricated transmission components operate in the mixed region, indicating that both asperity film exist rubbing surfaces. Herein, a novel method is proposed to evaluate time-varying of spiral bevel gears transient This sufficiently robust for addressing any st...

We consider some basic principles of fluid-induced lubrication at soft interfaces. In particular, we quantify how a soft substrate changes the geometry of and the forces between surfaces sliding past each other. By considering the model problem of a symmetric nonconforming contact moving tangentially to a thin elastic layer, we determine the normal force in the small and large deflection limit,...

This paper presents the use of Acoustic Emission to study the running-in and subsequent micropitting of a pair of hardened steel surfaces under mixed lubrication conditions. These surfaces were loaded together under rolling/sliding conditions typical of heavily loaded gearing. Relocation profilometry was used to measure the rapid running-in process and the development of micropits. Acoustic emi...

Anti friction bearings in process pumps, by design, frequently utilize oil sump lubrication technology. For many years, it was an accepted condition that the lubricating oil used in oil sump bearing lubrication needed to be changed on a regular basis to prevent high levels of contamination that can lead to premature bearing failure, contributing to equipment downtime. Often, the indicators used...

The multi-lip combined seal has the advantages of coupling, large supporting force, and can withstand high-pressure shocks. It is an irreplaceable structure for single-lip seals. However, most wear analysis focuses on simulation method under influence macro factors, very little involves characteristics In this paper, a micro numerical established, which combines elastohydrodynamic lubrication t...

Tooth surface wear causes variation in meshing stiffness and transmission error of the gear system further fluctuation dynamic characteristics. In this study, a behavior prediction model was established, which considered machined tooth based on mixed lubrication sliding tribology-dynamic model. The pair characteristics along line were analyzed through simulations, impacts conditions, operating ...