Optimization transient wear and contact performances of water-lubricated bearings under fluid-solid-thermal coupling condition using profile modification

Xiang, Guo; Yang, Tianyou; Guo, Juan; Wang, Jiaxu; Liu, Bin; Chen, Shouan

doi:10.1016/j.wear.2022.204379

Cited by 73 publications

(41 citation statements)

References 30 publications

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“…Chen et al [5] conducted an experimental analysis of the thermal conductivity and tribological properties of WLJBs by employing a new polyurethane composite material mixed with different metal wires. Xiang et al [6][7][8] proposed a profile modification method of bearing surfaces to optimize the wear of WLJBs and evaluated the nonlinear dynamic performance for WLJBs considering mixed the thermos-elasto-hydrodynamic effect. Lv et al [9,10] developed the transient mixed-lubrication model that considers turbulence to analyze the performance characteristics of WLJBs with the impact load and speeding up.…”

Section: Introductionmentioning

confidence: 99%

Effects of manufacturing errors and micro-groove surfaces on the static and dynamic characteristics of water-lubricated bearings

Shi

et al. 2023

Phys. Scr.

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In this paper, the effects of manufacturing error and micro-groove on the static, dynamic and stability characteristics of water-lubricated journal bearings (WLJBs) are investigated. Mathematical expressions of manufacturing errors and surface micro-groove are presented, and the Reynolds equations with steady and unsteady states are calculated by using the linear perturbative method and the finite difference technology. According to the developed model, the effects of the waviness magnitude, spatial number, and phase angle for circumferential errors, as well as the concavity, convexity, and taper for axial errors on the film thickness distribution, fluid pressure distribution, bearing capacity, coefficient of friction, side leakage flow rate, attitude angle, stiffness coefficient, damping coefficient, threshold speed and whirl frequency ratio of WLJBs are evaluated. Simulation results demonstrate that fluid film thickness distribution and fluid pressure distribution are significantly affected by manufacturing errors and micro-groove. Compared with axial manufacturing errors, circumferential manufacturing errors cause an inhomogeneous distribution of fluid pressure and morphological transformation in the high-pressure zone. The variation rules for the lubrication performance of bearings with circumferential waviness, concavity, convexity, and taper errors are not consistent at various eccentricity ratios. The magnitude of the concavity and taper errors may have an improving effect on the bearing performance, whereas circumferential waviness and convexity error play a negative role. Moreover, the micro-groove with partial distribution enhances the hydrodynamic effect in the bearing clearance. Numerical simulations can provide a valuable reference for the manufacturing and design of bearing systems.

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Section: Introductionmentioning

confidence: 99%

Effects of manufacturing errors and micro-groove surfaces on the static and dynamic characteristics of water-lubricated bearings

Shi

et al. 2023

Phys. Scr.

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“…Then, the minimum film thickness prediction formula was established by fitting the curve of the numerical solution and observed the influence of surface topography on the performance of lubricating films in elliptical point contact with an arbitrary entrainment velocity angle (2018). Most recently, more factors which significant influence on the lubricating property are considered by Xiang (2022) and Chen (2022).…”

Section: Introductionmentioning

confidence: 99%

Effect of boundary slip on elastohydrodynamic lubrication with arbitrary entrainment angle in elliptical contacts

Cao

Cai

Wang

et al. 2023

ILT

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Purpose The purpose of this study is to describe and observe the influence of boundary slip associated with an arbitrary entrainment angle on the contact lubrication properties of ellipses. Design/methodology/approach Based on the modified Reynolds equation, the boundary slip of any angle is considered in the elliptic contact, and numerical simulation is carried out. In the above calculation, the progressive mesh densification method is used, which greatly reduces the computation time. Findings The results indicate that the variation of film thickness corresponding to different entrainment angles is distinct from those without considering boundary slip. In addition, boundary slip reduces the central film thickness and minimum film thickness, which makes the hydrodynamic pressure distribution smoother. Originality/value The present study focuses on the specific condition with the arbitrary direction of rolling and sliding velocity found in hypoid gears and worm, and some other components. The influence of boundary slip associated with arbitrary entrainment angle on the lubrication film thickness in elliptical contacts is first revealed, which improves a good understanding of elastohydrodynamic lubrication characteristics.

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“…In addition to the research described above, many studies [16][17][18][19][20][21][22][23][24][25][26][27][28] on wear, dynamic characteristics, friction-induced vibration and noise of water-lubricated stern tube bearings have also been conducted by scholars. Han et al [16] experimentally studied the mechanism of action of stick-slip nonlinear friction-induced vibration of water-lubricated stern rube bearing.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, they proposed a new mathematical modeling technique to investigate the nonlinear dynamic mixed friction behaviors of journal-thrustcoupled bearings lubricated with water [26]. In order to improve the transient wear and asperity contact performance of the water-lubricated bearing, Xiang et al [27] proposed a surface profile modification method under fluid-solid-thermal coupling conditions. Chen et al [28] numerically investigated the effect of an imperfect journal, including journal error with respect to the amplitude as well as the waviness, on the tribo-dynamic behaviors of water-lubricated bearings during start-up.…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis of the Mixed-Lubrication Performance of Staved Stern Tube Bearings Lubricated with Water

et al. 2023

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The present study aims to establish a mixed lubrication model for staved stern tube bearings lubricated with water, in which the average Reynolds equation and a KE elastic–plastic contact model are introduced to calculate the hydrodynamic pressure and contact pressure, respectively. The difference in the mixed lubrication behaviors between circular- and flat-staved bearings is compared; moreover, the effects of the number of staves on the mixed-lubrication performance of these two kinds of staved bearing are investigated. The mechanism of action of the number of staves in staved bearings on the mixed-lubrication performance is revealed. The numerical results show that the number of staves has a significant effect on the mixed-lubrication performance in circular- and flat-staved bearings. Furthermore, there is an optimal value for the number of staves, shown to be 30 in the current simulation, for improving the mixed-lubrication performance of flat-staved stern tube bearings lubricated with water.

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Optimization transient wear and contact performances of water-lubricated bearings under fluid-solid-thermal coupling condition using profile modification

Cited by 73 publications

References 30 publications

Effects of manufacturing errors and micro-groove surfaces on the static and dynamic characteristics of water-lubricated bearings

Effects of manufacturing errors and micro-groove surfaces on the static and dynamic characteristics of water-lubricated bearings

Effect of boundary slip on elastohydrodynamic lubrication with arbitrary entrainment angle in elliptical contacts

Numerical Analysis of the Mixed-Lubrication Performance of Staved Stern Tube Bearings Lubricated with Water

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