3-D Characterization, Optimization, and Classification of Textured Surfaces

Stachowiak, Gwidon; Podsiadło, Paweł

doi:10.1007/s11249-008-9354-x

Cited by 23 publications

(7 citation statements)

References 24 publications

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“…where Π is the frictional power loss, Q in is the pad inflow, c p the lubricant specific heat and k con is the amount of heat removed by convection, typically 50% k con 100% [20,21]. In the present study k con ¼ 75%.…”

Section: Thermal Effectsmentioning

confidence: 95%

Numerical analysis and optimization of surface textures for a tilting pad thrust bearing

Gropper

Harvey

Wang

2018

Tribology International

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A B S T R A C TA numerical model based on the Reynolds equation to study textured tilting pad thrust bearings considering massconserving cavitation and thermal effects is presented. A non-uniform and adaptive finite volume method is utilized and two methods are compared and selected regarding their efficiency in handling discontinuities; specifically placing additional nodes closely around discontinuities and directly incorporating discontinuities in the discrete system. Multithreading is applied to improve the computational performance and three root-finding methods to evaluate the bearing equilibrium are compared; namely Newton-Raphson method, Broyden's method with Sherman-Morrison formula and a continuation approach with fourth-order Runge-Kutta method. Results from the equivalent untextured bearing are utilized to accelerate the computation of the textured bearing and results are validated by comparison with CFD data.

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Section: Thermal Effectsmentioning

confidence: 95%

Numerical analysis and optimization of surface textures for a tilting pad thrust bearing

Gropper

Harvey

Wang

2018

Tribology International

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“…The mechanism of wear in such conditions is caused by multiple factors. Actually it is quite hard to study fretting-wear and to select countermeasures [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

Fretting-Wear Mechanism of Textured Surfaces

Pashechko¹,

Marchuk²,

Киндрачук³

et al. 2019

Adv. Sci. Technol. Res. J.

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The wear mechanism of textured dimpled in conditions of lubricated fretting-wear is established, which, in contrast to others, takes into account possibility of removing deterioration products out of tribo-contact areas into dimples, preventing their action as abrasive material. Selection of optimal structural parameters of selectively dimpled areas allows to reduce duration of tribological couple running-in time. Depending on texture type, friction coefficient was reduced from 0.27 (for untreated furface) to 0.18, and wear loss-from 7.8 ×10-3 g to 3.3 ×10-3 g.

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“…For lubricated contacts, the additional hydrodynamic pressure can be named, thus leading to an increase of load‐bearing capacity. On the other hand, surface textures can act as efficient traps for wear debris or induce a secondary oil supply based upon a reservoir effect . In addition, surface textures can significantly reduce the real contact area, which leads to a reduced frictional force and coefficient of friction (COF) .…”

Section: Introductionmentioning

confidence: 99%

Surface Textures Fabricated by Laser Surface Texturing and Diamond Cutting – Influence of Texture Depth on Friction and Wear

Zhang

Rosenkranz

et al. 2018

Adv Eng Mater

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In the present work, the authors study the tribological characteristics of textured stainless steel surfaces with different texture depths ranging from 1.3 to 23 mm created by laser surface texturing and ultra-precision diamond cutting. The periodicity of the surface textures is kept constant at 90 mm for each fabrication technique and texture depth. Subsequent ball-on-disk friction tests show that friction and wear can be effectively reduced by the surface texturing. It is found that the effectiveness of the surface textures greatly depends on the depth and the geometry of the textures, as well as on testing parameters such as the applied load and the sliding velocity. Surface textures with the lowest depth demonstrate a slightly increased COF as well as an increased mass loss under low loads or sliding velocities. On the other hand, surface textures with intermediate depths show a significant reduction in the COF and wear. The observed friction and wear reduction can be mainly attributed to a combined effect of the surface textures consisting of the generation of an additional hydrodynamic pressure, the storage of produced wear particles as well as the action as secondary source for lubricant (reservoir effect).

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3-D Characterization, Optimization, and Classification of Textured Surfaces

Cited by 23 publications

References 24 publications

Numerical analysis and optimization of surface textures for a tilting pad thrust bearing

Numerical analysis and optimization of surface textures for a tilting pad thrust bearing

Fretting-Wear Mechanism of Textured Surfaces

Surface Textures Fabricated by Laser Surface Texturing and Diamond Cutting – Influence of Texture Depth on Friction and Wear

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