Results 11 to 20 of about 10,169,708 (230)

Numerical and Experimental Investigations to Assess the Impact of an Oil Jet Nozzle with Double Orifices on the Oil Capture Performance of a Radial Oil Scoop

Aerospace, 2023
To study the influence of orifice spacing on the oil–air two-phase flow and the oil capture efficiency of an oil scoop in an under-race lubrication system, an experimental platform for under-race lubrication was built, and a calculation model for the oil–
Le Jiang, Yaguo Lyu, Yanjun Li, Yewei Liu, Yankun Hou, Zhenxia Liu   +5 more
doaj   +1 more source

Experimental study on oil supply efficiency of under-race lubrication based on radial oil scoop

IOP Conference Series: Earth and Environmental Science, 2021
Abstract Under-race lubrication is an efficient lubrication method of aeroengine bearings for achieving high DN values. In this paper, an experimental study on oil supply efficiency of under-race lubrication structure based on high rotation speed and small size radial oil scoop is carried out.
Jingwen Qin, Huiqing Jiang, Hui Guo, Fuliang Wang, Hui Zhu   +4 more
openaire   +1 more source

Correlation between Acoustic Emission activity and asperity contact during meshing of spur gears under partial elastohydrodynamic lubrication. [PDF]

, 2005
This paper presents results of an experimental programme that suggested a correlation between levels of Acoustic Emission (AE) activity and the frictional resistance of contacting asperities of spur gears under partial elastohydrodynamic ...
Mba, David, Tan, Chee Keong
core   +3 more sources

Study of the Contact Characteristics of Machine Tool Spindle Bearings under Strong Asymmetric Loads and High-Temperature Lubrication Oil

Lubricants, 2022
The contact characteristics of angular contact ball bearings are closely related to the thermal failure of high-speed spindle systems. This paper establishes a closed-loop iterative model for analyzing the ball–race contact characteristics of machine ...
Yanfang Dong, Feifan Chen, Ming Qiu, Huijie Wang, Chuanmeng Yang   +4 more
doaj   +1 more source

Investigation on two-phase flow characteristics and oil capture performance of axial oil scoop in aero-engine

Case Studies in Thermal Engineering, 2023
Due to the improvement in the performance of aero-engines and the continuous size reduction, efficient under-race lubrication is becoming more and more important to provide the proper amount of lubricant oil for the main shaft rolling bearings.
Le Jiang, Yaguo Lyu, Zhenxia Liu
doaj   +1 more source

The lubrication of normal human ankle joints [PDF]

, 1981
The geometry, friction and lubrication of normal human ankle joints have been investigated. The joints exhibited converging diverging surfaces in the direction of motion.
Medley, John.B.
core   +5 more sources

Approximate Analytical Model for the Squeeze-Film Lubrication of the Human Ankle Joint with Synovial Fluid Filtrated by Articular Cartilage [PDF]

, 2010
The aim of this article is to propose an analytical approximate squeeze-film lubrication model of the human ankle joint for a quick assessment of the synovial pressure field and the load carrying due to the squeeze motion.
Emilio Gòmez, Roberto D’Amato, D'Amato, Roberto, Alessandro Ruggiero, Ruggiero, Alessandro, Gomez Garcia, Emilio   +5 more
core   +1 more source

‐based multiscale composite under different lubrication and loads

, 2022
An UHMWPE-based multiscale composite containing graphene oxide, nanodiamonds, and short carbon fibres has shown excellent performance under distilled water lubrication.
Hari Shankar Vadivel, Vadivel, Hari Shankar,, Julian Somberg, Shankar Vadivel, Hari, Somberg, Julian,, Somberg, Julian, Mitjan Kalin, Kalin, Mitjan,, Nazanin Emami, Emami, Nazanin, Emami, Nazanin,, Kalin, Mitjan   +11 more
core   +1 more source

Analysis of the Thermal Flow Field in the Bearing Cavity of Double-Rotor Cylindrical Roller Bearing with Under-Race Lubrication

, 2023
Abstract To solve the problem of high-temperature failure of double-rotor cylindrical roller bearing with under-race lubrication. Fluent meshing, the volume of fluid (VOF) method, and multiple reference frame (MRF) method were used to simulate and analyze the flow field and temperature field in the cavity of a double-rotor cylindrical roller ...
F Wei, hongbin Liu, chuang Gao
openaire   +1 more source

Research progress on high-efficiency lubrication and cooling technology for aircraft engine main spindle bearings

Hangkong gongcheng jinzhan
Rolling bearings are the critical components of aircraft engines，which require the efficient lubrication and cooling technologies to ensure stable operation under the harsh conditions of high speed，high temperature，and heavy load. Compared to traditional
LIU Zhenxia, ZHU Zetao, JIANG Le, LYU Yaguo, QIN Jingwen   +4 more
doaj   +1 more source