A simplified analytical method for the pressure of tilt hydrostatic journal bearing

Du, Yikang; Mao, Kuanmin; Liu, Hongqi; Mao, Xiaobo; Li, Zhihang

doi:10.1108/ilt-03-2017-0077

Cited by 5 publications

(4 citation statements)

References 15 publications

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“…A similar study was later conducted on HS thrust bearings to investigate geometric patterns and different pad shapes, concluding that the presented model may be useful in HS bearing load-carrying capacity and stiffness of HS bearings for low-speed applications [38]. Du et al [39] proposed an analytical model for the analysis of the pressure of tilted HS journal bearings validated using a CFD and experimental procedure. Guo et al [40] performed a comparison of CFD codes for static and dynamic properties in hydrodynamic and HS bearing applications.…”

Section: Introductionmentioning

confidence: 82%

A Novel Geometry Optimization Approach for Multi-Recess Hydrostatic Bearing Pad Operating in Static and low-Speed Conditions Using CFD Simulation

et al. 2023

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The design of a hydrostatic bearing pad is limited to simple geometry using analytical equations or one-parameter optimization based on experimental data. This study proposes and investigates a new two-parameter method for estimating optimal hydrostatic bearing pad proportions—recess area and position, using Computational Fluid Dynamics (CFD). In this study, 3D static CFD quarter model of a multi-recess hydrostatic bearing pad assuming laminar flow is used. The CFD model was calibrated based on experimentally obtained results and the literature. The recess pressure and resulting load are evaluated for a variety of recess positions and areas. Performance factors are calculated and interpolated in the MATLAB environment. Using the proposed novel two-parameter optimization, the energetic loss was reduced by 20% compared to the classical one-parameter approach. This methodology allows versatile and effective design of optimal hydrostatic bearings operating in low-speed conditions to achieve minimum energetic loss.

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Section: Introductionmentioning

confidence: 82%

A Novel Geometry Optimization Approach for Multi-Recess Hydrostatic Bearing Pad Operating in Static and low-Speed Conditions Using CFD Simulation

et al. 2023

View full text Add to dashboard Cite

show abstract

“…A similar study was later conducted on HS thrust bearings to investigate geometric patterns and different pad shapes, concluding that the presented model may be useful in HS bearing load carrying capacity and stiffness of HS bearings for low-speed applications [38]. Du et al [39] proposed an analytical model for the analysis of the pressure of tilted HS journal bearings validated using a CFD and experimental procedure. Guo et al [40] performed a comparison of CFD codes for static and dynamic properties in hydrodynamic and HS bearing applications.…”

Section: Introductionmentioning

confidence: 94%

A novel geometry optimization approach for multi-recess hydrostatic bearing pad operating in static and low-speed conditions using CFD simulation

Michalec

Ondra

Svoboda

et al. 2023

Preprint

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This study investigates a new two-parameter method for estimating optimal hydrostatic bearing pad proportions. The design of a hydrostatic bearing pad is limited to simple geometry using analytical equations or one-parameter optimization based on experimental data. In this study, 3D static CFD model results were verified using analytical results and experimental data on a hydrostatic bearing testing device. The obtained CFD results for load and pressure show a deviation within 5.2% compared to the experimentally obtained results and the literature. Using the proposed novel two-parameter optimisation, the energetic loss was reduced by 30% compared to the classical one-parameter approach. This methodology allows versatile and effective design of optimal hydrostatic bearings operating in low-speed conditions to achieve minimum energetic loss.

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“…Then, this model was revised to take elastic deformation into consideration (Wang et al , 2016). Du et al (2018) presented a CFD model for the pressure of a tilted hydrostatic journal bearing. Zhang et al (2015) and Shahin et al (2018) investigated the stiffness coefficients of journal bearings based on CFD analyses.…”

Section: Introductionmentioning

confidence: 99%

Principal normal stress cavitation criterion for CFD analysis of loading capacity in journal bearings

Li¹,

Zhang²,

Wang³

et al. 2019

ILT

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Purpose Shear stresses have a considerable influence on the characteristics of lubricants and become significant at high rotating speeds. This study aims to investigate the influences of shear cavitation (SC) on loading capacity of journal bearings. Design/methodology/approach A principal normal stress cavitation criterion based on the stress applied to flowing lubricant in journal bearings is developed and used to investigate SC in journal bearings. A computational fluid dynamic (CFD) model for calculating the loading capacity is established using this criterion. After validation with experimental results, the loading capacity is calculated under different conditions. Findings The calculation results indicate that SC intensifies when viscosity, speed and eccentricity increase. Angle of loading capacity with SC is larger than that without SC. The magnitude of loading capacity with SC is smaller than that without SC due to the decrease in the ultimate pressure. In addition, the magnitude difference between the loading capacity with and without SC increases when viscosity, speed and eccentricity increases. Originality/value Present research can provide some guidance for calculating the loading capacity when a journal bearing is operating at high speed or with a high viscosity lubricant.

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A simplified analytical method for the pressure of tilt hydrostatic journal bearing

Cited by 5 publications

References 15 publications

A Novel Geometry Optimization Approach for Multi-Recess Hydrostatic Bearing Pad Operating in Static and low-Speed Conditions Using CFD Simulation

A Novel Geometry Optimization Approach for Multi-Recess Hydrostatic Bearing Pad Operating in Static and low-Speed Conditions Using CFD Simulation

A novel geometry optimization approach for multi-recess hydrostatic bearing pad operating in static and low-speed conditions using CFD simulation

Principal normal stress cavitation criterion for CFD analysis of loading capacity in journal bearings

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