Wear prediction considering dynamic load for spur gear in mixed elastohydrodynamic lubrication

Xing, Mingcai; Zhou, Changjiang; Li, Yunzhe; Zheng, Ming Feng

doi:10.1177/13506501221134998

Cited by 3 publications

(2 citation statements)

References 45 publications

(69 reference statements)

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“…29,30 The researchers correlated the basic wear model with the operating conditions of the tribo-pairs and made corresponding improvements to the numerical model. [31][32][33][34] In the previous studies on the rotor starting process, lubrication performance is usually used as a criterion to evaluate the superiority of start-up performance, while ignoring the wear behavior. Therefore, an integrated consideration of the wear behavior and lubrication performance of journal bearing is necessary for a more accurate assessment of the starting characteristics of the bearing-rotor system.…”

Section: Introductionmentioning

confidence: 99%

Transient tribo-dynamic performance of journal bearings considering wear behavior during start-up

Wei

Liao

Wang

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part J:

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The transient tribo-dynamics and wear model are coupled to study the mixed lubrication-wear behavior during start-up. The coupled numerical model involves the film thickness equation with wear depth and a time-varying wear coefficient to account for the impact of transient mixed lubrication behavior on wear. In this study, the evolution of wear and mixed lubrication performance distribution over time is predicted, and the impact of acceleration mode, acceleration time, external load, lubricant viscosity, and start-up time on the numerical predictions is evaluated. The findings demonstrate that wear behavior, particularly in the analysis of the effects of acceleration mode and acceleration time, has a significant impact on the evaluation of the bearing-rotor system's start-up performance and even changes the determination of optimal parameters. Furthermore, the parametric study demonstrates that wear and mixed lubrication performance are sensitive to the external load and lubricant viscosity. Finally, studies on the effect of start-up times show that proper wear geometry promotes hydrodynamic effects, but severely worn bearing surfaces have a negative effect on start-up.

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Section: Introductionmentioning

confidence: 99%

Transient tribo-dynamic performance of journal bearings considering wear behavior during start-up

Wei

Liao

Wang

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part J:

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“…In order to quantitatively describe the relationship between contact pressure and running-in cycle, it is necessary to develop a tooth surface wear model for double circular-arc spiral bevel gears and reveal the wear behaviors of the tooth surface during the running-in process. Literature tracking shows that extensive research on gear wear has been conducted in the past decades, 5 involving the surface wear behaviors of involute spur gears, [6][7][8] involute helical gears, [9][10][11] and involute spiral bevel gears. [12][13][14] However, the study on the wear behaviors of double circular-arc spiral bevel gears is still absent.…”

Section: Introductionmentioning

confidence: 99%

A running-in strategy based on an efficient wear simulation model for double circular-arc spiral bevel gears

Zhong,

Tang,

Yao

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part J:

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A proper running-in process is necessary for double circular-arc spiral bevel gears to achieve desirable meshing performance. However, this type of gear transmission lacks a suitable running-in wear model, which brings great difficulties to the design of appropriate running-in strategies. To address this problem, the present study establishes an efficient numerical wear model to reveal the wear behavior of double circular-arc spiral bevel gear pairs, based on which a step-wise load running-in strategy is proposed. The established Archard's wear model considers the meshing characteristics of double circular-arc spiral bevel gears and sets a small threshold value, which can reflect the wear behavior of this gear in the running-in stage. To improve the computation efficiency, a two-step parameter updating strategy is proposed to enhance the iteration of p and s. The wear simulation reveals the quantitative relationship contact pressure and running-in cycle during the running-in process. Based on the reveal relationship, a step-wise load running-in strategy is proposed to sharpen the running-in period. The developed wear model and the proposed running-in strategy can be extended to other types of gears with circular-arc profiles.

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Stochastic uncertain lubrication in gear transmission subjected to tribodynamic loading

Chen,

Sha,

et al. 2024

Friction

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A stochastic uncertain tribodynamic model is established for a spur gear pair for the first time. The stochastic uncertainty of pinion rotation speed propagated to lubrication performance is investigated. The probability density function of the minimum lubricant film thickness hmin evolves over time periodically at interval of an engagement process. Correspondence between abrupt increase in meshing force and amplification of hmin uncertainty is found. Robust and reliable lubrication performance can be achieved by suppressing the hmin uncertainty and decreasing the lubrication failure probability. This can be done by increasing lubricant viscosity, and decreasing input torque and uncertainty level of input rotation speed. This work lays a solid foundation for robust and reliability based optimization for tribodynamic gear system.

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Wear prediction considering dynamic load for spur gear in mixed elastohydrodynamic lubrication

Cited by 3 publications

References 45 publications

Transient tribo-dynamic performance of journal bearings considering wear behavior during start-up

Transient tribo-dynamic performance of journal bearings considering wear behavior during start-up

A running-in strategy based on an efficient wear simulation model for double circular-arc spiral bevel gears

Stochastic uncertain lubrication in gear transmission subjected to tribodynamic loading

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