Preliminary investigation of the effect of dimple size on friction in line contacts

Wang, Xiaolei; Liu, Wei; Zhou, Fei; Zhu, Daiyin

doi:10.1016/j.triboint.2009.03.012

Cited by 136 publications

(78 citation statements)

References 21 publications

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“…In the case of non-conformal contacts, recently a number of researchers started to investigate the effect of above mentioned parameters [34,45,[51][52][53][54][55][56][57][58].…”

Section: Important Parametersmentioning

confidence: 99%

An overview of geometrical parameters of surface texturing for piston/cylinder assembly and mechanical seals

et al. 2015

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Surface texturing has been effectively used to improve tribological performance of sliding surfaces. Reduction in friction, increase in hydrodynamic load carrying capacity, reduction in wear and increase in fluid film stiffness are few examples of the benefits that can be obtained by surface texturing. In order to obtain these benefits, several researchers have investigated the effects of surface texturing geometrical parameters on the performance of different applications. If these geometrical parameters are not optimized for each application, they may have detrimental effects on their performance. These geometrical parameters in case of micro dimples include depth, diameter, depth to diameter ratio, shape and density of dimples. In this paper, the author reviews the effects of these geometrical parameters on the performance of two applications piston ring/cylinder assembly and mechanical seals.

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“…In the case of non-conformal contacts, recently a number of researchers started to investigate the effect of above mentioned parameters [34,45,[51][52][53][54][55][56][57][58].…”

Section: Important Parametersmentioning

confidence: 99%

An overview of geometrical parameters of surface texturing for piston/cylinder assembly and mechanical seals

et al. 2015

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“…The surface patterns, such as "pit or spot," "groove or striation," and "grid or lattice," may be inspired by the natural flora and fauna [9,10] or regularly distributed features [11][12][13], isotropic or anisotropic [14][15][16][17][18][19]. "Stick-slip" friction phenomena can be observed during sliding, depending on the surface topological pattern.…”

Section: Introductionmentioning

confidence: 99%

The Influence of Rotating Direction on the Tribological Behavior of Grey Cast Iron with Curve Distributed Pit Textured Surface

Sun

Xie

Kelly

et al. 2017

Mathematical Problems in Engineering

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To investigate the influence of surface features, in the form of pits, on the wear resistance of grey cast iron (GCI), a finite element model of the pin-on-disc friction system, with pits distributed in a curved radial direction, was developed using APDL programming and the tribological behavior of textured surfaces was studied. The influence of relative rotation direction between the disc and the pin on the thermal behavior of the friction system under dry wear conditions was researched. GCI and C30E steel samples with pit textured surfaces were manufactured using laser marking equipment and tested using a tribology wear testing rig. The mass losses were measured and the worn surfaces were characterized. The influence of different rotation directions on the tribological behavior of the pit textured surfaces was also investigated. The simulation and test results revealed that rotation direction was a crucial parameter in determining the tribological behavior of surfaces with these features, regardless of the material. Under the conditions tested, when the pin rotated anticlockwise, the samples showed better friction and wear behavior than when the pin rotated clockwise. These results can provide important guidance for the optimization of the design of heavy-load brake systems and other similar applications.

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“…Through numerical simulations, Wang et al [28] showed the hydrodynamic pressure generation of the surface dimples was tightly related to the dimple size. Tang et al [29] demonstrated the strong influence of the adjacent dimple interactions on the hydrodynamic pressure.…”

Section: Literature Reviewmentioning

confidence: 99%

The Effects of Microdimple Texture on the Friction and Thermal Behavior of a Point Contact

Parmar

2018

Journal of Tribology

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This study investigates the effects of the micro-dimple texture on the friction and surface temperature performances of a ball-on-disk contact, operating under the speed and load ranges that cover typical gearing applications. Circular shaped micro-dimple arrays with different dimple center distances and dimple depths are implemented on the ball surface to quantify the impacts of these two parameters on the friction coefficient and the maximum ball surface temperature. In addition, the contacts of three surface texture combinations, namely micro-dimpled and polished ball surface versus polished disk surface, polished ball surface versus polished disk surface and ground ball surface versus ground disk surface, are compared to demonstrate any beneficial or detrimental effect of micro-dimples in heavily loaded high speed applications. This study adopts a thermal mixed EHL point contact model, whose capability and accuracy have been well demonstrated by comparing to the experimental measurements, to quantify the deterministic tribological behavior within the contact, allowing the exploration of the underlying mechanism that governs the role of micro-dimples in the elastohydrodynamic lubrication.iv

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Preliminary investigation of the effect of dimple size on friction in line contacts

Cited by 136 publications

References 21 publications

An overview of geometrical parameters of surface texturing for piston/cylinder assembly and mechanical seals

An overview of geometrical parameters of surface texturing for piston/cylinder assembly and mechanical seals

The Influence of Rotating Direction on the Tribological Behavior of Grey Cast Iron with Curve Distributed Pit Textured Surface

The Effects of Microdimple Texture on the Friction and Thermal Behavior of a Point Contact

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