Nonlinear analysis of herringbone gear rotor system based on the surface waviness excitation of journal bearing

Yang, Jie; Zhu, Rupeng; Yue, Yanjiong; Dai, Guanghao; Yin, Xunmin

doi:10.1007/s40430-021-03352-3

Cited by 7 publications

(2 citation statements)

References 31 publications

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“…Yang et al 21 found the enhancement of static behaviour of bearing with waviness on both the journal and bearing. Yang et al 22 observed the dynamic behaviour of the wave bearing using the finite difference method and Reynolds equation and revealed that waviness influences the bearing stability. Bangotra and Sharma 23,24 reported that the surface waviness and the use of lubricant additives and the partial surface waviness enhance the static performance of journal bearings.…”

Section: Introductionmentioning

confidence: 99%

Effect of partial surface waviness on the dynamic and stability performance of journal bearing

Bangotra,

Sharma

2024

Lubrication Science

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This study presents the impact of full and partial surface waviness on the dynamic and stability performance of the journal bearing. The Reynolds equation is modified to account for the impact of surface waviness, and the lubricant domain is discretized using the Finite element method to obtain dynamic characteristics such as stiffness and damping coefficients and stability parameters, that is, threshold speed. Different wave numbers in the axial, circumferential and mixed directions are considered at variable wave amplitudes in different regions at an average eccentricity ratio of 0.6 to obtain the optimum values. The obtained results reveal that by application of waviness in the full region and partial waviness in the pressure‐reducing region on the bearing surface provides the enhanced value of stability parameter, fluid film stiffness and dynamic coefficients as compared to the simple journal bearing under the same working conditions.

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Section: Introductionmentioning

confidence: 99%

Effect of partial surface waviness on the dynamic and stability performance of journal bearing

Bangotra,

Sharma

2024

Lubrication Science

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“…The results indicated that the impact of waviness on the bearing surface enhanced the load capacity. Yang et al [18] proposed a coupling dynamics model of herringbone gear rotor system, which considered the bearing waviness and studied the influence of the surface waviness on the dynamic characteristics of radial bearing-herringbone gear rotor system. The results suggested that proper bearing waviness contributed to the stability of the miter gear rotor system supported by journal bearings.…”

Section: Introductionmentioning

confidence: 99%

Influence of bearing waviness on the lubrication performances of coupled journal-thrust water-lubricated bearings

Zhang

Cai

Yang

et al. 2023

Surf. Topogr.: Metrol. Prop.

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The purpose of this study is to discuss the effect of the bearing waviness on the lubrication performances of coupled journal-thrust water-lubricated bearings using an elastohydrodynamic lubrication model. The results of the numerical model are compared to the published experimental data to verify the validity of the numerical model. The load capacity and maximum fluid pressure under different parameters of waviness of coupled journal-thrust bearings are calculated by numerical model, and then the influence of the bearing waviness on the performance of coupled journal-thrust water-lubricated bearings is analyzed. The simulation results show that the waviness amplitude has great influence on the bearing performances and the effect becomes increasingly pronounced with the growth of waviness amplitude. For the waviness of journal bearings, the performances are more sensitive to the waviness arranged in bearing circumferential direction than radial direction. For the waviness of thrust bearings, the presence of circumferential waviness can improve the load capacity, while radial waviness can reduce the load capacity. With the increase of wavelength, the load capacity and maximum fluid pressure have similar periodic changes, but the change is irregular. More investigations are required regarding the influence of geometrical shape of the waviness and its wavelength on the performance of the bearing.

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Steady-state and dynamic performances of journal bearing based on rough surface reconstruction technology

Yang

Zhu

Lee

2022

J Braz. Soc. Mech. Sci. Eng.

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Nonlinear analysis of herringbone gear rotor system based on the surface waviness excitation of journal bearing

Cited by 7 publications

References 31 publications

Effect of partial surface waviness on the dynamic and stability performance of journal bearing

Effect of partial surface waviness on the dynamic and stability performance of journal bearing

Influence of bearing waviness on the lubrication performances of coupled journal-thrust water-lubricated bearings

Steady-state and dynamic performances of journal bearing based on rough surface reconstruction technology

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