Numerical Analysis of Elastohydrodynamic Lubrication with Non Newtonian Lubricant

被引:0
作者
Cupu, Dedi Rosa Putra [1 ]
Bahari, Adli [2 ]
Osman, Kahar [3 ]
Sheriff, Jamaluddin Md
机构
[1] Univ Riau, Fac Engn, Dept Mech Engn, Pekanbaru, Riau, Indonesia
[2] German Malaysian Inst, Automat & Mech Sect, Dept Elect Ind, Kajang, Malaysia
[3] Univ Teknol Malaysia, Fac Mech Engn, Skudai 81310, Malaysia
来源
ADVANCES IN THERMOFLUIDS | 2013年 / 388卷
关键词
Elastohydrodynamic Lubrication; Non-Newtonian Lubricant; Newton-Raphson method; STEADY-STATE;
D O I
10.4028/www.scientific.net/AMM.388.3
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
Elastohydrodynamic lubrication is a form of hydrodynamic lubrication involving physical interaction between two contacting surfaces and liquid where elastic deformation of the contacting surfaces due to heavily loading applied will affect the elastohydrodynamic pressure and fluid film thickness significantly. In this paper, a line contact EHL is modeled through the cylinder contact to a flat surface to represent the application of roller bearing. This solution is limited to two dimensional line contact problem only, an infinite length of cylinder was used as physical modeling. The behavior of non-Newtonian fluid also was investigated using power law fluid model. Bearing speed is to be assumed in steady state and temperature is assumed constant. The bearing performance parameters such as pressure and film thickness of lubricated contacts are calculated using Newton-Raphson method.The results show that the peak pressure increases as the parameters such as velocity, load and material parameter were increases and the spike was found to shift to the center of roller. The film was almost flat at contact region and formed a dimple shape near the outlet flow. The value of pressure spike and minimum film thickness were smaller at lower speed and were increased during raising speed then the peak point was found to be shifted to center of roller.
引用
收藏
页码:3 / +
页数:2
相关论文
共 6 条
[1]  
Bohan M.F.J., 2003, INT J NUMERICAL METH, V12
[2]   Deformable roll coating flows: Steady state and linear perturbation analysis [J].
Carvalho, MS ;
Scriven, LE .
JOURNAL OF FLUID MECHANICS, 1997, 339 :143-172
[3]   A GENERALIZED STEADY-STATE REYNOLDS-EQUATION FOR NON-NEWTONIAN FLUIDS, WITH APPLICATION TO JOURNAL BEARINGS [J].
DIEN, IK ;
ELROD, HG .
JOURNAL OF LUBRICATION TECHNOLOGY-TRANSACTIONS OF THE ASME, 1983, 105 (03) :385-390
[4]   Magnetic head-rigid disk interface hydrodynamically lubricated with a power-law fluid [J].
Elsharkawy, AA .
WEAR, 1997, 213 (1-2) :47-53
[5]   FAST APPROACH FOR CALCULATING FILM THICKNESSES AND PRESSURES IN ELASTOHYDRODYNAMICALLY LUBRICATED CONTACTS AT HIGH LOADS [J].
HOUPERT, LG ;
HAMROCK, BJ .
JOURNAL OF TRIBOLOGY-TRANSACTIONS OF THE ASME, 1986, 108 (03) :411-420
[6]   A finite element investigation into a soft rolling contact supplied by a non-Newtonian ink [J].
Lim, CH ;
Bohan, MFJ ;
Claypole, TC ;
Gethin, DT ;
Roylance, BJ .
JOURNAL OF PHYSICS D-APPLIED PHYSICS, 1996, 29 (07) :1894-1903