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Keywords: film thickness
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Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Tribol. December 2024, 146(12): 124103.
Paper No: TRIB-24-1058
Published Online: August 30, 2024
...Mingyu Zhang; Xinqing Wang; Yiming Han; Jing Wang; C. H. Venner Intermittent motion is a complex process that involves constant speed, deceleration, static stages, and acceleration. Theoretical analysis suggests that shortening the period of intermittent motion can increase the film thickness...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Tribol. October 2024, 146(10): 104101.
Paper No: TRIB-24-1047
Published Online: June 6, 2024
... 2024 Graphical Abstract Figure smart lubricants soft-EHL core traction film thickness rheology The characteristics of a lubricated interface are notably influenced by the viscosity of the lubricant and its response to variations in shear rate, temperature, and pressure...
Journal Articles
Journal Articles
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Tribol. November 2022, 144(11): 111603.
Paper No: TRIB-22-1038
Published Online: July 12, 2022
... experimentally investigated using a four-ball wear test machine. The results indicated that the vibration velocity tends to increase with the sliding velocity. With a lower combination of ratio of the vibration velocity to the sliding velocity and the specific film thickness, lower friction coefficients were...
Journal Articles
Journal Articles
Journal Articles
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Tribol. March 2019, 141(3): 031501.
Paper No: TRIB-18-1203
Published Online: November 1, 2018
...), calcium carbonate (CaCO 3 ), and alumina ( α -Al 2 O 3 ) in bare grease (BG). The formulated nanocomposite greases are tested for film formation, frictional and vibrational response under a limited supply of greases. The use of transparent glass disk better analyses the profile of film thickness...
Journal Articles
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Tribol. April 2010, 132(2): 021501.
Published Online: March 24, 2010
...H. Dormois; N. Fillot; W. Habchi; G. Dalmaz; P. Vergne; G. E. Morales-Espejel; E. Ioannides 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...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Tribol. October 2008, 130(4): 041504.
Published Online: August 5, 2008
...Ilya I. Kudish; P. Kumar; M. M. Khonsari; Scott Bair The estimation or prediction of elastohydrodynamic lubrication (EHL) film thickness requires knowledge of the lubricant properties. Today, in many instances, the lubricant properties have been obtained from a measurement of the central film...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Tribol. April 2008, 130(2): 021503.
Published Online: April 7, 2008
... stress are calculated, and lubricant film thickness is obtained using the load-sharing concept of Johnson et al. (1972, “A Simple Theory of Asperity Contact in Elastohydrodynamic Lubrication,” Wear, 19, pp. 91–108) To validate the analysis, the predicted film thickness and the friction coefficient...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Tribol. April 2008, 130(2): 021502.
Published Online: March 20, 2008
... polymer additives are often added to the base oil. This paper investigates the effect of mixture rheology on elastohydrodynamic lubrication (EHL) film thickness using EHL contact measurements and a full numerical analysis for three synthetic lubricants including two single-component lubricants PAO650...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Tribol. July 2007, 129(3): 502–508.
Published Online: February 9, 2007
... about film thickness changes within a lubricated contact. The behavior of microdents has been observed for positive slide-to-roll ratios when the disk is moving faster than the microtextured ball. The depth of microdents has been found to play significant role as to the lubrication films efficiency...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Tribol. January 2007, 129(1): 181–187.
Published Online: October 25, 2006
...I. C. Faraon; D. J. Schipper This paper discusses a mixed lubrication model in order to predict the Stribeck curve for starved lubricated line contacts. This model is based on a combination of the contact model of Greenwood and Williamson and the elastohydrodynamic (EHL) film thickness for starved...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Tribol. July 2006, 128(3): 624–631.
Published Online: March 3, 2006
...Scott Bair; Yuchuan Liu; Q. Jane Wang There has been a long-standing need for a piezoviscous parameter α film that, together with the ambient viscosity μ 0 , will completely quantify the Newtonian rheology so that the film thickness for liquids that do not shear-thin in the inlet may be calculated...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Tribol. April 2001, 123(2): 254–261.
Published Online: February 11, 2000
... in lubricant film thickness and shape during fast, controlled deceleration, both in pure sliding and pure rolling conditions. Film collapse is seen to occur in two stages. The first persists throughout the deceleration period and, during this stage the film geometry remains almost constant across the contact...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Tribol. April 2001, 123(2): 262–267.
Published Online: February 11, 2000
... 2000 hydrodynamics mechanical contact lubrication surface topography elasticity tribology viscosity Elastohydrodynamic Lubrication Film Thickness Nonsteady State Transient Stop–Start Grubin Part I of this study measured the film collapse in lubricated elastohydrodynamic...