The Effect of Texture Shape on the Load-Carrying Capacity of Gas-Lubricated Parallel Slider Bearings

Qiu, Mingfeng; Delic, Adis; Raeymaekers, Bart

doi:10.1007/s11249-012-0027-4

Cited by 120 publications

(87 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We have used a finite difference approach on a staggered grid [31, 32] with a successive over-relaxation factor of 1.0 to 1.9 to solve Eqs. (2) and (3) in conjunction with the Reynolds cavitation condition, for a range of different microtexture geometries ( ε, S p ).…”

Section: Patterned Microtexture Designmentioning

confidence: 99%

A patterned microtexture to reduce friction and increase longevity of prosthetic hip joints

Chyr

Qiu

Speltz

et al. 2014

Wear

Self Cite

View full text Add to dashboard Cite

More than 285,000 total hip replacement surgeries are performed in the US each year. Most prosthetic hip joints consist of a cobalt-chromium (CoCr) femoral head that articulates with a polyethylene acetabular component, lubricated with synovial fluid. The statistical survivorship of these metal-on-polyethylene prosthetic hip joints declines significantly after 10 to 15 years of use, primarily as a result of polyethylene wear and wear debris incited disease. The current engineering paradigm to increase the longevity of prosthetic hip joints is to improve the mechanical properties of the polyethylene component, and to manufacture ultra-smooth articulating surfaces. In contrast, we show that adding a patterned microtexture to the ultra-smooth CoCr femoral head reduces friction when articulating with the polyethylene acetabular liner. The microtexture increases the load-carrying capacity and the thickness of the joint lubricant film, which reduces contact between the articulating surfaces. As a result, friction and wear is reduced. We have used a lubrication model to design the geometry of the patterned microtexture, and experimentally demonstrate reduced friction for the microtextured compared to conventional smooth surrogate prosthetic hip joints.

show abstract

Section: Patterned Microtexture Designmentioning

confidence: 99%

A patterned microtexture to reduce friction and increase longevity of prosthetic hip joints

Chyr

Qiu

Speltz

et al. 2014

Wear

Self Cite

View full text Add to dashboard Cite

show abstract

“…Generally, for smaller values of relative velocity between sliding surfaces and minimum bearing clearance, the fluid inertia effect can be neglected. 26 The suitability of Reynolds equation in Rayleigh step bearing was studied by Dobrica and Fillon, 27 However, configuration consent to film thickness of almost half a millimetre is rarely found in fluid-film lubrication.…”

Section: Derivation Of Modified Reynolds Equation Considering the Flumentioning

confidence: 99%

Effects of texture shape and fluid–solid interfacial slip on the hydrodynamic lubrication performance of parallel sliding contacts

Ismail

Sarangi

2013

Proceedings of the Institution of Mechanical Engineers, Part J:

View full text Add to dashboard Cite

The aim of this paper is to study the effect of texture shape and fluid-solid interfacial slip on the hydrodynamic lubrication performance of parallel sliding contact. The modified Reynolds equation is solved using finite difference method with a Gauss-Seidel relaxation scheme. The two-component slip length model has been used in order to calculate the slip velocity terms. Results indicate that the consideration of fluid slip around the surface texture enhances the hydrodynamic performance of textured parallel sliding contact as compared to the conventional textured surface. It is concluded that the surface texture should be designed with lower texture height ratio and aspect ratio in order to achieve better hydrodynamic lubrication performance. Furthermore, it is observed that the lower critical threshold shear stress and the higher slip length coefficient improve the performance of parallel sliding contact.

show abstract

“…In the case of flat-flat contact, the macro geometry is omitted and Equation (3) reduces to Equation (4) [31,32]: The formula for the circular pocket is given in Equation (5):…”

Section: Mathematical Solutionmentioning

confidence: 99%

The Influence of Surface Texturing on the Film Thickness in Starved Lubricated Parallel Sliding Contacts

Bijani¹,

Deladi²,

Rooij

et al. 2018

Lubricants

View full text Add to dashboard Cite

Abstract:In industrial applications, a starved lubrication condition may occur, leading to a reduction in film thickness; by modifying the surface geometry, the tribological performance of the contact is enhanced. In this paper, the influence of surface texturing as a method for reducing the friction on the film thickness in parallel sliding surfaces for starved lubricated contacts is investigated. The results in this study have shown that surface texturing can improve film formation for starved lubricated contacts and, respectively, the load carrying capacity. The effect of starvation on several texturing patterns with several texturing properties was investigated and the film thickness for these conditions was studied. With the numerical algorithm developed and taking cavitation into consideration, the effect of shape, depth, size, and texture pitch on the film thickness was studied.

show abstract

The Effect of Texture Shape on the Load-Carrying Capacity of Gas-Lubricated Parallel Slider Bearings

Cited by 120 publications

References 44 publications

A patterned microtexture to reduce friction and increase longevity of prosthetic hip joints

A patterned microtexture to reduce friction and increase longevity of prosthetic hip joints

Effects of texture shape and fluid–solid interfacial slip on the hydrodynamic lubrication performance of parallel sliding contacts

The Influence of Surface Texturing on the Film Thickness in Starved Lubricated Parallel Sliding Contacts

Contact Info

Product

Resources

About