Variation in contact load at the most loaded position of the outer raceway of a bearing in high-speed train gearbox

Hou, Yaxin; Wang, Xi; Que, Hongbo; Guo, Rubing; Lin, Xinhai; Jin, Siqin; Wu, Chengpan; Zhou, Yongqin; Liu, Xiaolong

doi:10.1007/s10409-021-01141-8

Cited by 14 publications

(7 citation statements)

References 22 publications

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“…This kind of variation in roller-raceway contact load has been reported and analyzed in Refs. [27,28,32] and As can be seen from Fig. 8(b), when the shaft speed and the lubricant was fixed, the load zone became wider, and the contact load distributed on each test position increased with the applied load increasing.…”

Section: Strain-based Pure Rolling Proof and Measured Radial Load Dis...mentioning

confidence: 93%

“…A new method based on strain detection was used here to measure the dynamic radial load distribution in CRBs with good accuracy. This measurement method has been successfully developed and implemented on a CRB in a high-speed train gearbox [27,28]. It is significant that instrumentation of the test bearing by strain sensors and calibration of a compliance matrix for strain-load transfer in this method.…”

Section: Experimental Principlementioning

confidence: 99%

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A combined experimental and analytical method to determine the EHL friction force distribution between rollers and outer raceway in a cylindrical roller bearing

et al. 2023

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Friction force is a crucial factor causing power loss and fatigue spalling of rolling element bearings. A combined experimental and analytical method is proposed to quantitatively determine the elastohydrodynamic lubrication (EHL) friction force distribution between rollers and outer raceway in a cylindrical roller bearing (CRB). An experimental system with the instrumented bearing and housing was developed for measuring radial load distribution and friction torque of bearings. A simplified model of friction force expressed by dimensionless speed, load, and material parameters was given. An inequality constrained optimization problem was established and solved by using an experimental data-driven learning algorithm for determining the uncertain parameters in the model. The effect of speed, load, and lubricant property on friction force and friction coefficient was discussed.

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Section: Strain-based Pure Rolling Proof and Measured Radial Load Dis...mentioning

confidence: 93%

Section: Experimental Principlementioning

confidence: 99%

A combined experimental and analytical method to determine the EHL friction force distribution between rollers and outer raceway in a cylindrical roller bearing

et al. 2023

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“…When the external excitation frequency is close to a certain order frequency of the gearbox, the stress amplitude of the gearbox housing will sharply increase. Huo et al [30] conducted experiments to investigate the variation in contact load on the outer raceway's maximum loaded position of a gearbox bearing in a high-speed train. They also studied the characteristics and reasons for the variation in contact load at this position.…”

Section: Dynamics Under Both External and Internal Excitationmentioning

confidence: 99%

Dynamics and Fault Diagnosis of Railway Vehicle Gearboxes: A Review

Zhao,

Chen

2024

JDMD

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The railway vehicle gearbox is an important part of the railway vehicle traction transmission system which ensures the smooth running of railway vehicles. However, as the running speed of railway vehicles continues to increase, the railway vehicle gearbox is exposed to a more demanding operating environment. Under both internal and external excitations, the gearbox is prone to faults such as fatigue cracks, broken teeth, etc. It is crucial to detect these faults before they result in severe failures and accidents. Therefore, understanding the dynamics and fault diagnosis of railway vehicle gearbox is needed. At present, there is a lack of systematic review of railway vehicle gearbox dynamics and fault diagnosis. So, this paper systematically summarizes the research progress on railway vehicle gearbox dynamics and fault diagnosis. To this end, this paper first summarizes the latest research progress on the dynamics of railway vehicle gearboxes. The dynamics and vibration characteristics of the gearbox are summarized under internal and external excitations, as well as faulty conditions. Then, the state-of-the-art signal processing and artificial intelligence methods for fault diagnosis of railway vehicle gearboxes are reviewed. In the end, future research prospects are given. Conflict of Interest Statement The authors declare no conflicts of interest.

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“…Previously, for in-situ measurement of contact load distribution within rolling element bearings with good accuracy, a new method based on strain measurement has been successfully developed, implemented and applied without any modifications to the bearing itself [25,26]. In the current study, instrumentation based on this approach is added to a bearing in high-speed train gearbox.…”

Section: Introductionmentioning

confidence: 99%

Measured load spectra of the bearing in high-speed train gearbox under different gear meshing conditions

et al. 2022

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The load spectrum is a crucial factor for assessing the fatigue reliability of in-service rolling element bearings in transmission systems. For a bearing in a high-speed train gearbox, a measurement technique based on strain detection of bearing outer ring was used to instrument the bearing and determine the time histories of the distributed load in the bearing under different gear meshing conditions. Accordingly, the load spectrum of the total radial load carried by the bearing was compiled. The mean value and class interval of the obtained load spectrum were found to vary non-monotonously with the speed and torque of gear meshing, which was considered to be caused by the vibration of the shaft and the bearing cage. As the realistic service load input of bearing life assessment, the measured load spectrum under different gear meshing conditions can be used to predict gearbox bearing life realistically based on the damage-equivalent principle and actual operating conditions.

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Variation in contact load at the most loaded position of the outer raceway of a bearing in high-speed train gearbox

Cited by 14 publications

References 22 publications

A combined experimental and analytical method to determine the EHL friction force distribution between rollers and outer raceway in a cylindrical roller bearing

A combined experimental and analytical method to determine the EHL friction force distribution between rollers and outer raceway in a cylindrical roller bearing

Dynamics and Fault Diagnosis of Railway Vehicle Gearboxes: A Review

Measured load spectra of the bearing in high-speed train gearbox under different gear meshing conditions

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