Influence of recess shape on comprehensive lubrication performance of high speed and heavy load hydrostatic thrust bearing

Yu, Min; Yu, Xinquan; Zheng, Xuhang; Qu, Haiyan; Yuan, Tengfei; Li, Daige

doi:10.1108/ilt-05-2018-0204

Cited by 13 publications

(4 citation statements)

References 11 publications

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“…Several theoretical and experimental studies have been published in the open literature related to the thrust pad bearings. [1][2][3][4][5][6][7][8][9] Osman et al 1 scrutinized the experimental study of hydrostatic thrust pad bearing and computed the performance parameters of bearing in terms of fluid film thickness, pressure distribution, and oil flow rate. Further, it was reported that pocket size and shape have a significant influence on the behavior of hydrostatic thrust bearings.…”

Section: Hybrid/hydrostatic Thrust Pad Bearingsmentioning

confidence: 99%

“…Furthermore, they also proposed that a thin metal plate acts as a fluid restrictor and improves the dynamic stiffness coefficient of bearing. Yu et al [3][4][5] studied the pressure distribution of hydrostatic thrust pad bearing for different pocket shapes (sector, rectangular, elliptical, and I-shaped pockets) using CFD (Computational fluid dynamic) and Finite Volume technique. They revealed that rectangular-shaped recess provides a larger pocket pressure value as compared to other geometric shapes of pocket.…”

Section: Hybrid/hydrostatic Thrust Pad Bearingsmentioning

confidence: 99%

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Shear-Thinning and piezoviscous lubricant behavior of spiral grooved hybrid thrust pad bearing configurations

Kumar

Sharma

2022

Proceedings of the Institution of Mechanical Engineers, Part J:

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The present study investigates the effects of shear-thinning and piezoviscous lubricant on the behavior of inwardly and outwardly spiral grooved hybrid annular thrust pad bearing configurations. The performance of spiral grooved circular and annular hybrid thrust pad bearing configurations with a capillary restrictor is also compared in this study. The influence on fluid film reaction, lubricant flow rate, fluid film stiffness, and damping coefficients have been carried out. The numerically simulated results show that the synergistic effect of spiral grooves and shear-thinning and piezoviscous behavior of the lubricant, have a significant impact on lubrication performance. The maximum percentage difference in the value of fluid film stiffness between outwardly spiral grooved annular recessed hybrid thrust pad bearing with non-Newtonian lubricant and inwardly spiral grooved annular recessed hybrid thrust pad bearing with Newtonian lubricant is found to be 80.6 percent.

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Section: Hybrid/hydrostatic Thrust Pad Bearingsmentioning

confidence: 99%

Section: Hybrid/hydrostatic Thrust Pad Bearingsmentioning

confidence: 99%

Shear-Thinning and piezoviscous lubricant behavior of spiral grooved hybrid thrust pad bearing configurations

Kumar

Sharma

2022

Proceedings of the Institution of Mechanical Engineers, Part J:

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“…A series of studies have been undertaken on active hybrid bearings, in which the part one describes the mathematical model and second part outlines the control design techniques for improving dynamic characteristics [6,7]. The performance characteristics of the hydrostatic bearings are checked against different shapes of recess [8,9] but there is a performance limitation due to the fixed throttling effect. A prototype is developed for the active bearing where the clearance gap is controlled through high-speed solenoid valves but deficiency arises because it is used for light load applications [10].…”

Section: Introductionmentioning

confidence: 99%

Model-Based Design Approach to Improve Performance Characteristics of Hydrostatic Bearing Using Multivariable Optimization

et al. 2021

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Research in the field of tribo-mechatronics has been gaining popularity in recent decades. The objective of the current research is to improve static/dynamics characteristics of hydrostatic bearings. Hydrostatic bearings always work in harsh environmental conditions that effect their performance, and which may even result in their failure. The current research proposes a mathematical model-based system for hydrostatic bearings that helps to improve its static/dynamic characteristics under varying conditions of performance-influencing variables such as temperature, spindle speed, external load, and clearance gap. To achieve these objectives, the capillary restrictors are replaced with servo valves, and a mathematical model is developed along with robust control design systems. The control system consists of feedforward and feedback control techniques that have not been applied before for hydrostatic bearings in the published literature. The feedforward control tries to remove a disturbance before it enters the system while feedback control achieves the objective of disturbance rejection and improves steady-state characteristics. The feedforward control is a trajectory-based controller and the feedback controller is a sliding mode controller with a PID sliding surface. The particle swarm optimization algorithm is used to tune the 6-dimensional vector of the tuning parameters with multi-objective performance criteria. Numerical investigations have been carried out to check the performance of the proposed system under varying conditions of viscosity, clearance gap, external load and the spindle speed. The comparison of our results with the published literature shows the effectiveness of the proposed system.

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“…An active thrust bearing is proposed in Mizumoto et al (1996), where two actuators work in a region around bearing plate, changing plate iconicity results in fluid force. The shape of throttling devices whether throttle is restrictor, recess, servo valve has influence on the static and dynamic characteristics (Shao et al, 2018;Yu et al, 2019;Rehman et al, 2019a). To maintain fluid film thickness, a numerical/experimental approaches have been used to study different mechanism for pressure regulation (Lewis, 1984).…”

Section: Introductionmentioning

confidence: 99%

An active control for hydrostatic journal bearing using optimization algorithms

Rehman

Wang

Chen

et al. 2021

ILT

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Purpose The purpose of this paper is to improve static/dynamic characteristics of active-controlled hydrostatic journal bearing by using fractional order control techniques and optimizing algorithms. Design/methodology/approach Active lubrication has ability to overcome the unpredictable harsh environmental conditions which often lead to failure of capillary controlled traditional hydrostatic journal bearing. The research develops a mathematical model for a servo feedback-controlled hydrostatic journal bearing and dynamics of model is analyzed with different control techniques. The fractional-order PID control system is tuned by using particle swarm optimization and Nelder mead optimization techniques with the help of using multi-objective performance criteria. Findings The results of the current research are compared with previously published theoretical and experimental results. The proposed servo-controlled active bearing system is studied under a number of different dynamic situations and constraints of variable spindle speed, external load, temperature changes (viscosity) and variable bearing clearance (oil film thickness). The simulation results show that the proposed system has better performance in terms of controllability, faster response, stability, high stiffness and strong resistance. Originality/value This paper develops an accurate mathematical model for servo-controlled hydrostatic bearing with fractional order controller. The results are in excellent agreement with previously published literature. Peer review The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-07-2020-0272

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Influence of recess shape on comprehensive lubrication performance of high speed and heavy load hydrostatic thrust bearing

Cited by 13 publications

References 11 publications

Shear-Thinning and piezoviscous lubricant behavior of spiral grooved hybrid thrust pad bearing configurations

Shear-Thinning and piezoviscous lubricant behavior of spiral grooved hybrid thrust pad bearing configurations

Model-Based Design Approach to Improve Performance Characteristics of Hydrostatic Bearing Using Multivariable Optimization

An active control for hydrostatic journal bearing using optimization algorithms

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