Rheological texture in a journal bearing with magnetorheological fluids

Lampaert, S.G.E.; Quinci, Federico; Ostayen, Ron A.J. van

doi:10.1016/j.jmmm.2019.166218

Cited by 22 publications

(13 citation statements)

References 28 publications

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“…Niu et al (2022) investigated the performance of journal bearing with full and partial textures and found good results in partially texture bearing. Lampaert et al (2020) investigated the performance of the bearing with rheological texture in a v-shaped pattern and by using magnetorheological fluid with the local magnetic field in finite element method (FEM) and found an increase in yield stress and the viscosity. Lampaert et al (2020) investigated the performance of the bearing with rheological texture in a V-shaped pattern and by using magnetorheological fluid with the local magnetic field in FEM and found an increase in yield stress and the viscosity.…”

Section: Introductionmentioning

confidence: 99%

“…Lampaert et al (2020) investigated the performance of the bearing with rheological texture in a v-shaped pattern and by using magnetorheological fluid with the local magnetic field in finite element method (FEM) and found an increase in yield stress and the viscosity. Lampaert et al (2020) investigated the performance of the bearing with rheological texture in a V-shaped pattern and by using magnetorheological fluid with the local magnetic field in FEM and found an increase in yield stress and the viscosity. Yu et al (2016) studied the effects of texture position, texture shape, rheological parameters of grease on the LCC and the friction coefficient of the journal bearings and found an increase in the LCC with proper use of texture and its position.…”

Section: Introductionmentioning

confidence: 99%

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Performance analysis of textured journal bearing operating with and without nanoparticles in the lubricant

Byotra

Sharma

2022

ILT

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Purpose This study aims to investigate the performance improvement of journal bearing by applying the arc-shaped textures on various regions of bearing expressly full, second half and pressure increasing regions operating with and without nanoparticles in the lubricant. Design/methodology/approach The Reynolds equation is solved numerically by using the finite element method to obtain static performance parameters such as load-carrying capacity (LCC) and coefficient of friction (COF), which are then compared with untextured bearing at eccentricity ratios of 0.2 to 0.8. Aluminum oxide (Al2O3) and copper oxide (CuO) nanoparticles additives are used, and viscosity variation due to the addition of additives in the base lubricant is computed for considering the range of temperatures 50 to 90°C at a weight fraction of 0.1 to 0.5% by using an experimentally validated regression model. Findings The results indicate that the maximum LCC and the lower COF are found in the pressure-increasing region. A maximum increase of 34.42% is observed in the pressure-increasing region without nanoparticles, and furthermore, with the addition of Al2O3 and CuO nanoparticles in lubricants in the same region, the LCC increased to 21 and 24%, respectively. Originality/value Designers should use optimal parameters from the present work to achieve high bearing performance.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Performance analysis of textured journal bearing operating with and without nanoparticles in the lubricant

Byotra

Sharma

2022

ILT

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“…The special features of magnetorheological liquids make it possible to use them primarily in various applications designed to control and dampen vibrations. Examples of their practical use are described in the works by Aruna et al (2020), Lampaert et al (2020), Salunkhe and Thikane (2017), and Utami et al (2018) and include shock absorbers controlling vibrations in vehicles, rotary brakes, shock absorbers used to control seismic movements in buildings and bridges, magnetic polishers, and special purpose devices such as prostheses and other devices supporting the rehabilitation process. Depending on the design of the device, the magnetic liquid can work in one of several modes of operation, that is, shearing or pressure mode (Walke et al, 2019), compression mode (Horak, 2018), and the so-called pinch mode (Go1dasz and Sapin´ski, 2017).…”

Section: Introductionmentioning

confidence: 99%

Investigation of the properties of selected magnetorheological fluids

Fenyk

Horak

Zieliński

et al. 2022

Journal of Intelligent Material Systems and Structures

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The paper presents the results of research on the rheological properties of magnetorheological (MR) fluids with different physical and chemical compositions. The research concerned complete compositions of MR fluids as well as base fluids (samples containing no particles with ferromagnetic properties). Magnetorheological fluids consisted mainly of a carrier liquid in the form of glycerin or OKS 352 silicone oil, with magnetite or iron pentacarbonyl particles. The paper demonstrates the effect of the selection of individual components of the MR fluids on their rheological properties, paying attention to the interaction of the base liquid with the particles of the solid phase of the MR fluid. Under the conditions of exposure to a magnetic field, the type of ferromagnetic particles (their magnetic properties) have a decisive impact on the magnetorheological response of the fluid (change in rheological properties due to the effect of the magnetic field on the fluid). The magnetite-based samples showed a tangential stress of 1000 Pa, while the use of iron carbonyl allowed to obtain approximately 8000 Pa (with respect to the case where B = 500 mT, [Formula: see text]). No significant differences in rheological properties were recorded between the oleic acid- and silica-stabilized samples.

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“…Some literature uses the word hybrid bearing which utilizes the hydrostatic as well as a hydrodynamic concept simultaneously. 12, 13 Several authors published their literature to hold the problem of the hydrostatic thrust bearing and try to analyze the textured surface more accurately. Most of the studies are theoretical and based on the Reynolds equation with different approaches.…”

Section: Introductionmentioning

confidence: 99%

Performance of hybrid thrust bearing textured surface operating with electro-rheological lubricant

Singh

Kumar

Singh

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part J:

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This article concerns with the numerical simulations of textured surface hybrid thrust bearings operating with Electro-rheological (ER) lubricant. An ER fluid comprises dielectric particles suspended in an insulating viscous medium. Electrorheological (ER) lubricants are considered smart lubricants. Reynold's equation is used to model the flow of an ER lubricant in textured surface thrust bearings. The texture is provided as hemispherical, cylindrical, elliptical, and square shape micro-depression oriented along the circumferential and radial direction. The Patir and Cheng model is used to describe micro-roughness on a thrust pad. The continuous Bingham model is used to define the viscosity of the ER lubricant in terms of yielding stress, electric field, and shear-strain rate. The Reynolds equation is solved by applying the finite element method to obtain film pressure, load-supporting capacity, frictional power loss, film stiffness, and damping parameters. The texture shapes are optimized for dimple size, depth, and length for getting maximum load-supporting capacity and stiffness coefficient, and minimum frictional power loss. The numerical results predicted an enhancement in the load-supporting capacity (+257.3%) and film stiffness parameters (+323.2%) owing to the synergistic use of ER lubricant and optimized geometric parameters of square/elliptical dimples. The frictional power loss was reported to reduce significantly (−48.8%) by the use of micro-dimples. The application of ER lubricant was also found to slightly enhance (+4.3%) the frictional power loss in textured bearings. The transverse surface roughness vis-à-vis smooth surface is observed to improve the load-supporting capacity, stiffness, and damping parameters of textured surface bearings.

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Rheological texture in a journal bearing with magnetorheological fluids

Cited by 22 publications

References 28 publications

Performance analysis of textured journal bearing operating with and without nanoparticles in the lubricant

Performance analysis of textured journal bearing operating with and without nanoparticles in the lubricant

Investigation of the properties of selected magnetorheological fluids

Performance of hybrid thrust bearing textured surface operating with electro-rheological lubricant

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