A Laser Surface Textured Parallel Thrust Bearing

Brizmer, Victor; Kligerman, Y.; Etsion, I.

doi:10.1080/10402000308982643

Cited by 447 publications

(365 citation statements)

References 14 publications

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“…Incorporation of textured features in only the leading side of the lubricated area produces a pressure distribution similar to that of the Rayleigh step bearing. Brizmer et al [17] showed a similar pressure distribution with stepwise increases by incorporating multiple dimples on the inlet side of the lubricated area. The other mechanism is the balancing wedge action suggested by the authors [31], which pertains to the balance of moment.…”

Section: Introductionmentioning

confidence: 81%

“…He used the Reynolds boundary condition to predict the occurrence of cavitation. Some researchers [1,[16][17][18] adopted this boundary condition for numerical simulation of hydrodynamic lubrication for textured surfaces because this boundary condition can conveniently be incorporated in an iterative process to obtain a numerical solution of the Reynolds equation. However, although the rupture point of a film can be predicted using the Reynolds boundary condition, this does not take into account the mass-conservation of the flow between the rupture point and re-formation point of the film.…”

Section: Introductionmentioning

confidence: 99%

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On the Magnitude of Load-Carrying Capacity of Textured Surfaces in Hydrodynamic Lubrication

2015

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This paper investigates the magnitude of the load-carrying capacity enabled by textured feature in hydrodynamic lubrication. The numerical model is a two-dimensional fixed pad bearing with a single dimple. The Reynolds equation was numerically solved using the Elrod algorithm. Two boundary conditions at the inlet and outlet were compared: a periodic boundary condition and an atmospheric boundary condition. The load-carrying capacity for the atmospheric boundary condition is negative while that for the periodic boundary condition is positive when a dimple is located at the centre of the lubricated area. The atmospheric boundary condition, when a dimple is located on the inlet side and is opened to the outside, exhibits greater load-carrying capacity than that in the enclosed dimple case.

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Section: Introductionmentioning

confidence: 81%

Section: Introductionmentioning

confidence: 99%

On the Magnitude of Load-Carrying Capacity of Textured Surfaces in Hydrodynamic Lubrication

2015

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“…Furthermore, the textured surfaces can also increase load-carrying capacity [6,7]. Laser surface texturing technology has been used in many technological fields to improve the tribological performances of contact surfaces, such as mechanical seals [10,11], cutting tools [12][13][14], piston rings [15] and thrust bearing [16].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of tribological properties of laser textured hardened tool steels

et al. 2016

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In this paper the laser surface texturing (LST) technology as one of the methods of tribological properties modifying of mating steel surfaces is analysed. The area density of dimple-like depression along with the dimple diameter are the only main factors which significantly influence the friction coefficient value, therefore the effect of different values of area density of dimples: 6 %, 11 % and 16 % on the contact coefficient of friction was analysed. Surface textures were manufactured on the planar areas of compression platens (90MnCrV8 tool steel) using a pulsed-beam laser. The values of coefficients of friction were obtained via a ring compression test. Test sample compression was realized in lubrication-free and hydrodynamic regime. A significant improvement of tribological properties in contact steel areas was experimentally observed in both friction regimes. The results of experiments showed that by applying of surface texturing with defined shape and dimensions of dimples and lubricating oil at the same time, the coefficient of friction value can be reduced to about of 75%.

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“…The area density, the depth and feature distribution of the dimple are important geometric parameters which influence the tribological performance. The tribological performance of surfaces with dimples can be improved by optimizing the above three parameters [1][2][7][8].…”

Section: Introductionmentioning

confidence: 99%

“…Several surfaces with dimples fabricated by surface modified technology have been applied in mechanical seals [1][2][3][4][5], thrust bearing [6][7][8][9], and piston rings [10][11], etc. The area density, the depth and feature distribution of the dimple are important geometric parameters which influence the tribological performance.…”

Section: Introductionmentioning

confidence: 99%