Results 91 to 100 of about 3,174 (231)

Lubrication model of a knee prosthesis, with non newtonian fluid and porous rough material [PDF]

, 2009
Tibial component of knee prostheses, made of ultra high molecular weight polyethylene (UHMWPE), experiences a high degree of wear and may be expected to last twelve years on average.
Berli, Marcelo Eduardo, Campana, Diego Martin, Di Paolo, José, Ubal, Sebastian   +3 more
core  

Effects of roller profile on grease lubrication and fatigue properties of RV reducer crankshaft

Engineering Applications of Computational Fluid Mechanics
Due to the prolonged operation of Rotate Vector (RV) reducers under harsh low-speed and heavy-load conditions, the crankshaft as its core transmission component is prone to fatigue failure.
Jianqi Guan, Zehua Han, Zhaoliang Cui, Yunfei Cai, Shengrong Chen, Rui Li, Xianghui Meng   +6 more
doaj   +1 more source

Elastohydrodynamic principles applied to the design of helicopter components [PDF]

Elastohydrodynamic principles affecting the lubrication of transmission components are presented and discussed. Surface temperature of the transmission bearings and gears affect elastohydrodynamic film thickness.
Townsend, D. P.
core   +1 more source

Study on Tooth Wear of Spur Gears Under the Mixed Elastohydrodynamic Lubrication

Jixie chuandong, 2022
To study the wear evolution process and wear law of involute spur gears under the mixed elastohydrodynamic lubrication (EHL) and consider the lubrication conditions, thermal effects and load changes in the wear process of gear pairs, a wear model of gear
Wang Han, Li Huilan, Liu Guofeng, Ren Ziyuan   +3 more
doaj  

Effect of the operating temperature on thermal EHL performance of steel-POM gears

Jixie chuandong
ObjectiveThe temperature significantly influences the elastic modulus of polymer gears, which consequently affects their elastohydrodynamic lubrication performance.
ZHOU Jia’ao, LIU Xiaoling, ZHANG Zheng, LI Qun   +3 more
doaj  

Predicted and experimental performance of jet-lubricated 120-millimeter-bore ball bearings operating to 2.5 million DN [PDF]

Bearing inner- and outer-race temperatures and friction power losses were calculated using two computer programs. The values obtained were compared with previously reported experimental data for 120 mm bore bearings which operated at thrust loads to 22 ...
Coe, H. H., Zaretsky, E. V.
core   +1 more source

Analysis of Gear System Dynamics Based on Thermal Elastohydrodynamic Lubrication Effects

Lubricants
Lubrication plays a crucial role in reducing gear surface damage and defects such as pitting, wear, and scuffing; therefore, analyzing the influence of lubrication is essential for preventing such failures in gear transmission systems.
Zhaoxia He, Xiangjun Wang, Yinan Li, Yunfei Yang   +3 more
doaj   +1 more source

A system-approach to the elastohydrodynamic lubrication point-contact problem [PDF]

The classical EHL (elastohydrodynamic lubrication) point contact problem is solved using a new system-approach, similar to that introduced by Houpert and Hamrock for the line-contact problem.
Brewe, David E., Lim, Sang Gyu
core   +1 more source

Thermal elastohydrodynamic lubrication of line contacts [PDF]

A numerical solution to the problem of thermal elastohydrodynamic lubrication of line contacts was obtained by using a finite difference formulation.
Ghosh, M. K., Hamrock, B. J.
core   +1 more source

Comparison of predicted and measured elastohydrodynamic film thickness in a 20-millimeter-bore ball bearing [PDF]

Elastohydrodynamic film thicknesses were measured for a 20-mm bore ball bearing using the capacitance technique. The bearing was thrust loaded to 90, 445, and 778 N (20, 100, and 175 lb).
Coy, J. J., Gorla, R. S. R., Townsend, D. P.   +2 more
core   +1 more source