A NUMERICAL STUDY OF FRICTION IN ISOTHERMAL EHD ROLLING-SLIDING SPHERE-PLANE CONTACTS WITH SPINNING

被引：0
|
作者：
Vergne, P. [1 ]
Dormois, H. [1 ]
Thonon, Th. Doki [1 ]
Fillot, N. [1 ]
Habchi, W.
Morales-Espejel, G. E.
机构：
[1] Univ Lyon, CNRS, INSA Lyon, LaMCoS,UMR5259, F-69621 Villeurbanne, France
来源：
PROCEEDINGS OF THE STLE/ASME INTERNATIONAL JOINT TRIBOLOGY CONFERENCE, 2010 | 2011年
关键词：
D O I：
暂无
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
This paper presents a study of the spinning influence on film thickness and friction in EHL circular contacts under isothermal and fully-flooded conditions. Pressure and film thickness profiles are computed with an original Full-System FEM approach. Friction was thereafter investigated using a classical Ree-Eyring model to calculate the longitudinal and transverse shear stresses. An analysis of both the velocity and shear stress distributions at every point of the contact surfaces has allowed explaining the fall of the longitudinal friction coefficient. Moreover in the transverse direction, spinning favors large shear stresses of opposite signs, decreasing the fluid viscosity by non-Newtonian effects. These effects have direct consequences on the friction reduction that is observed in presence of spinning. They are expected to further decrease friction in real situations due to shear heating.
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页码：85 / 87
页数：3
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