Results 81 to 90 of about 3,174 (231)

Research on the Lubrication and Thermal Effects of Single-Metal Seals on Sealing Performance

Lubricants
This paper investigates the impact of lubrication and thermal effects on the performance of single-metal seals in roller cone bits, and it establishes the geometric, material, and operating parameter models for the single-metal seal.
Weidong Meng, Haijuan Wang, Hai Ma, Yi Zhang, Li Yao   +4 more
doaj   +1 more source

Analysis of Flash Temperature Characteristic of the Roller Enveloping End Face Engagement Worm Drive

Jixie chuandong, 2020
In order to improve the scuffing load capacity and study the flash temperature of roller enveloping end face engagement worm drive， the mathematical model of friction coefficient between end face worm gear and roller gear under elastohydrodynamic ...
Xiaolong Wang
doaj  

Elastohydrodynamics of elliptical contacts for materials of low elastic modulus [PDF]

The influence of the ellipticity parameter k and the dimensionless speed U, load W, and materials G parameters on minimum film thickness for materials of low elastic modulus was investigated.
Dowson, D., Hamrock, B. J.
core   +1 more source

The Effects of the Lubricant Properties and Surface Finish Characteristics on the Tribology of High-Speed Gears for EV Transmissions

Lubricants
Electric vehicle (EV) transmissions operate at high speeds. High-speed operation puts higher demands on bearings, seals, and gears. Bearings in EV transmissions are prone to electrically induced bearing damage and may exhibit signs of pitting and fluting.
Boris Zhmud, Morteza Najjari, Boris Brodmann   +2 more
doaj   +1 more source

Investigations of lubricant rheology as applied to elastohydrodynamic lubrication [PDF]

The pressure viscometer was modified to permit the measurement of viscosity at elevated pressures and shear stresses up to 5 x 10 to the 6th power N/sq m (720 psi).
Carlson, S., Jakobsen, J., Sanborn, D. M., Turchina, V., Winer, W. O.   +4 more
core   +1 more source

Effect of Centrifugal Adhesion of Pollutant on Thermal Elastohydrodynamic of Water-lubricated Hybrid Journal Bearing

Jixie chuandong, 2018
The elastohydrodynamic lubrication geometric model of centrifugal pollutants adhesion is established. The thermal elastohydrodynamic numerical simulation of water-lubricated hybrid journal bearings considering its lubricant pollution problem is carried ...
Zhang Tonggang, Wang Youqiang, Wang Limei, Xu Caihong   +3 more
doaj  

The practical impact of elastohydrodynamic lubrication [PDF]

The use of elastohydrodynamics in the analysis of rolling element bearings is discussed. Relationships for minimum film thickness and tractive force were incorporated into computer codes and used for bearing performance prediction.
Anderson, W. J.
core   +1 more source

Effect of Surface Texturing on Friction and Film Thickness under Starved Lubrication Conditions [PDF]

, 2015
Tato disertační práce se zabývá vlivem mělkých mikro-textur na tření a tloušťku filmu v mazaných nekonformních kontaktech za extrémních podmínek a za podmínek hladovění kontaktu. Měření byla realizována na tribometru v konfiguraci ball-on-disk.
Ali, Fadi
core  

Understanding the Influences of Multiscale Waviness on the Elastohydrodynamic Lubrication Performance, Part II: The Partial-Film Condition

Lubricants
This paper is the second part of a two-part report studying the responses of a typical point-contact elastohydrodynamic lubrication (EHL) system to multiscale roughness mimicked by wavy surfaces.
Yuechang Wang, Ying Liu
doaj   +1 more source

Elastohydrodynamic lubrication calculations used as a tool to study scuffing [PDF]

A new Reynolds equation was developed that takes into account the nonlinear viscous behavior of the fluid. The new Reynolds equation considers the nonlinear viscous fluid model of Eyring, the equilibrium equation, the constant mass flow, and the ...
Hamrock, B. J., Houpert, L. G.
core   +1 more source