... of hindering the rotation at the contact area. This phenomenon is called rolling traction [ 1 ]. Rolling traction is considered to be one of the causes of friction in rolling components (such as rolling bearings and gears) and has been studied for many years along with film thickness [ 1 – 15 ]. Rolling...

... using on-line visual ferrography. rolling bearings ultrasonic reflection wear state ferrography Wear is one of the main reasons leading to failure of rolling bearings [ 1 – 3 ]. In order not to change the running state of contact states of tribo-pairs, on-line nondestructive testing...

... when the traction coefficients change with the normal loads. rolling bearings elastohydrodynamic lubrication traction coefficient In rolling bearings, the traction forces at the rolling element/race interface greatly influence the orbital acceleration of rolling elements which, in turn...

... of the sealing contact is due to the migration of contaminant particles. The migration reduces the probability of particles to reach the sealing and bearing contacts. 27 05 2011 27 05 2011 06 10 2011 06 10 2011 greases lubricating oils organic compounds probability rolling...

... with previous models. References 1 Harris , T. A. , and Kotzalas , M. N. , 2007 , Rolling Bearing Analysis , 5th ed. – Essential Concepts of Bearing Technology , CRC Press , Boca Raton, FL . 2 Littmann , W. E. and Widner , R. L. , 1966 , “ Propagation of Contact...

... valuable fundamental data about the oil-air lubrication of rolling bearing; however, there are still some problems that concerned the oil-air lubrication, which are not addressed. In this study, an experiment setup to investigate the oil-air lubrication for the high speed ball bearing has been developed...

... are not adequately developed for real applications and require the support of detailed modeling. rolling element bearings modeling multibody dynamics bond graphs rolling contacts faults dents pits bond graphs mechanical contact rolling bearings vibrations 24 06 2010 17 11 2010...

... , “ A New Fatigue Life Model for Rolling Bearings ,” ASME J. Tribol. 0742-4787 , 107 , pp. 367 – 378 . 10.1115/1.3261081 Zhou , R. S. , 1993 , “ Surface Topography and Fatigue Life of Rolling Contact Bearings ,” Tribol. Trans. 1040-2004 , 36 , pp. 329 – 340 . 10.1080/10402009308983167...

... 2010 24 03 2010 ball bearings finite element analysis mechanical contact rolling bearings hertz elliptical conformal contact finite element analysis constant velocity joint Hertz contact theory is widely used to analyze the contact behavior of spherical surfaces...

... contact microcracks normal distribution rolling bearings Weibull distribution damage mechanics Voronoi finite element method rolling contact fatigue numerical simulation material microstructure Ball and rolling element bearings commonly referred to as bearings are frequently used...

... 15 07 2009 24 09 2009 ball bearings failure analysis fatigue mechanical contact rolling rolling bearings rolling contact fatigue bearing life empirical models material microstructure Ball and roller bearings commonly referred to as bearings are frequently used...

... (“Dynamic Capacity of Rolling Bearings,” Acta Polytech. Scand., Mech. Eng. Ser., 1(3), pp. 7–53 ), is used. This model relates fatigue life to a critical stress quantity and its corresponding depth, but instead of explicitly assuming a Weibull distribution of fatigue lives, the life distribution is obtained...

... pockets of the cage and examined the cage flexibility effects on cage behaviors and interaction forces. This study concluded that cage flexibility is needed to accurately estimate cage interaction forces. Dynamic analyses for rolling bearings require a high level of calculation technique...

... lubrication mechanical contact rolling bearings indentation contamination pollution fatigue rolling bearing life Surface defects, especially indents, have been recognized as an important cause of premature rolling contact fatigue. Solid particles from oil contamination entering the contact...

... in the rolling element and raceway contact is usually elastohydrodynamic, and most of the rolling friction in such contact areas in rolling bearings is EHL rolling resistance due to the viscous lubricant in the inlet ( 17 18 ). Aihara ( 17 ) presented a formula of running torque caused by EHL viscous rolling...

... to follow an inverse power law relationship with respect to the contact pressure with a stress-life exponent of 9.35. 18 01 2008 18 03 2008 06 08 2008 fatigue microcracks rolling bearings stochastic processes Weibull distribution Rolling contact fatigue damage mechanics...

... to include squeeze film motion is outlined. 05 04 2007 20 01 2008 06 05 2008 boundary layers cavitation film flow fracture hydrodynamics liquid films lubrication numerical stability rolling bearings voids (solid) wetting cavitation analysis fluid film lubrication...

... of the lubricating film. 25 08 2006 02 01 2007 rolling bearings inclusions fatigue cracks lubrication elastodynamics hydrodynamics elastic deformation mechanical contact discrete element method contact stresses inclusions elastohydrodynamic lubrication Spalling occurs...

...., roller cone bits, mud hammer drills, mud motors, and turbines ( 3 ). hydrodynamic thrust bearing thrust bearing hydrodynamic elasto-hydrodynamic coupled EHD load responsive bearing minimum film bearing fluid wedge hydrodynamics rolling bearings drilling drilling machines...

... surfaces inverse problems rheology rolling bearings EHL roughness stresses inverse method The life of EHL components such as gears, cams, and rolling element bearings tends to be reduced as the surface roughness increases. The relationship is not simple and the early formula of Tallian...