Thermohydrodynamic analysis and tribological optimization of a curved pocket thrust bearing

Fouflias, Dimitrios; Charitopoulos, Anastassios; Papadopoulos, Christos I.; Kaiktsis, Lambros

doi:10.1016/j.triboint.2017.02.012

Cited by 14 publications

(7 citation statements)

References 17 publications

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“…As a feasible way to conserve oil and debris on contact surfaces, surface textures have been researched over past decades and widely used in many applications [1], such as vibration cutting tools [2], mechanical seals [3], gas face seals [4], slipper bearing [5], thrust bearing [6], piston rings [7], and medical devices [8,9]. These researches showed the applying of surface textures can reduce wear and increase load carrying capacity, which is helpful to prolong service lives of mechanical components, save energy and protect environment.…”

Section: Introductionmentioning

confidence: 99%

An optimization research on groove textures of a journal bearing using particle swarm optimization algorithm

Zhang

Liu

Zhao

2021

Mechanics & Industry

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This study aims to optimize the distributions of groove textures in a journal bearing to reduce its friction coefficient. Firstly, A lubrication model of a groove textured journal bearing is established, and the finite difference and overrelaxation iterative methods are used to numerically solve the model. Then, the friction coefficient is adopted as the fitness function and the groove lengths are optimized by particle swarm optimization (PSO) algorithm to evolve the optimal distributions. Furthermore, the effects of eccentricity ratios and rotary speeds on optimal distributions of groove textures are also discussed. The numerical results show the optimal distributions of groove textures are like trapeziums under different eccentricity ratios and rotary speeds, and the trapeziums become slenderer with increasing of eccentricity ratios. It is also found that the reductions of friction coefficients by optimal groove textures are more significant under lower eccentricity ratios. Briefly, this study may provide guidance on surface texture design to improve the tribological performance of journal bearings.

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Section: Introductionmentioning

confidence: 99%

An optimization research on groove textures of a journal bearing using particle swarm optimization algorithm

Zhang

Liu

Zhao

2021

Mechanics & Industry

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“…One of the baseline models with different liquid film thicknesses is shown in Figure 1. The liquid film thicknesses are 0.015-0.035 mm, which are all common thicknesses in practical engineering applications (Fu and Untaroiu, 2017;Fouflias et al, 2017). And the distribution and size of textures are all the same.…”

Section: Baseline Modelmentioning

confidence: 98%

Optimal design of parallel sliders with square-shaped textures considering fluid-structure interaction

Wang

Zhang

et al. 2019

ILT

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Purpose Surface texturing has been proven as an effective means of contact performance enhancement. However, limited work has been done to investigate the regular relationship to solve the multi-parameters problem of textures, and inertia effect and elastic deformation were seldom considered together in previous optimization work. This paper aims to quantitatively obtain the relationship between the textured depth and liquid film thickness and find the effect of deformation on the optimal textured height ratio in elastic parallel sliders. Design/methodology/approach Numerical models of hydrodynamic lubrication are established based on the computational fluid dynamic method. Elastic deformation is considered through fluid–structure interaction (FSI) method. Using response surface optimization method, textured parallel sliders are optimized with maximum loading capacity as the objective. Findings The results show that the optimal height ratios are all within the range of 0.60-0.65 when textured parallel sliders are considered as rigid. After considering the effect of elastic deformation, loading capacity drops and is reduced more obviously with a decrease in the elastic moduli. The optimal height ratios are within the range of 0.60-0.63, which shows that FSI has a considerable influence on loading capacity but has no significant influence on the optimal height ratio. Originality/value The present research provides a theoretical reference for engineering application of elastic textured parallel sliders.

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“…Fluid film thrust pad bearings are commonly employed to support and guide the axial/thrust loads in hydraulic and steam turbines, air compressors, automobiles and high-power rated helical gearboxes [1][2][3][4][5]. Due to the widespread utilization of thrust pad bearings, numerous efforts are being made by researchers to study and improve their tribo-dynamic behaviours [5][6].…”

Section: Introductionmentioning

confidence: 99%

Influence of Variable Depth Surface Texture on the Performance Behaviours of Sector Shape Pad Thrust Bearing

Aggarwal

2024

Tribol. Ind.

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Performance behaviours of oil-lubricated sector shape pad thrust bearings incorporating the variable depth’s pockets/textures have been presented. The variable depth texture comprises of combination of grooves and pockets. Fixed depth pocket, variable depth pocket (depth of the pocket reducing towards the exit) and combination of fixed and variable depth pocket with the fixed and variable depth grooves have been considered in the present investigation. With the aim to improve the performance parameters of fixed pad thrust bearing, the effect of texture parameters such as pocket/groove depth, the circumferential extent of texture and different combinations of variable depth’s pocket and grooves have been investigated. Substantial improvement in the performance parameters (minimum film thickness and coefficient of friction) has been achieved in the presence of proposed textures having variable depths of micro-geometries.

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Thermohydrodynamic analysis and tribological optimization of a curved pocket thrust bearing

Cited by 14 publications

References 17 publications

An optimization research on groove textures of a journal bearing using particle swarm optimization algorithm

An optimization research on groove textures of a journal bearing using particle swarm optimization algorithm

Optimal design of parallel sliders with square-shaped textures considering fluid-structure interaction

Influence of Variable Depth Surface Texture on the Performance Behaviours of Sector Shape Pad Thrust Bearing

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