Mechanical behavior of double-row tapered roller bearing under combined external loads and angular misalignment

Liu, Yang; Xu, Tong; Xu, Haoliang

doi:10.1016/j.ijmecsci.2018.04.056

Cited by 59 publications

(22 citation statements)

References 18 publications

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“…The equation of the basic dynamic radial load rating for a single CRB is as follows 24,37 where m = i , e and γ = D w / D pw , the rolling element load for the basic dynamic load ratings of inner ring, Q ci , and outer ring, Q ce , can be calculated, respectively. η is the reduction factor introduced to consider the effect of pressure concentration for rollers.…”

Section: Model and Methodsmentioning

confidence: 99%

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Impact of journal bending on the failure of axle bearings in railroad passenger cars

Chang

Zhang

et al. 2019

Proceedings of the Institution of Mechanical Engineers, Part J:

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This research presents a systematic methodology to analyze the failure mechanism of cylindrical roller bearings of railroad passenger cars. Initially, a finite element model is developed to calculate the journal bending and internal contact load distribution, considering multi-interfacial contact parameters. Then, non-Hertzian contact theory is applied to prove the rollers’ abnormal contact behaviors, including load-distribution and displacement. Subsequently, a grease lubrication model is developed to study bearings lubrication under different operating conditions. Additionally, an exact service life model from ISO standards is used to evaluate the effect of journal bending. Finally, a system failure mechanism can be summarized and validated in the experiments, also helpful for axle box system bearings design and assembly.

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Section: Model and Methodsmentioning

confidence: 99%

“…For a wheel set, there are two axle box systems and four sets of bearings in it. The fatigue life of a system including multiple roller bearings can be obtained according to the relationship as below 37,39 where N indicates the number of roller bearings.…”

Section: Model and Methodsmentioning

confidence: 99%

Impact of journal bending on the failure of axle bearings in railroad passenger cars

Chang

Zhang

et al. 2019

Proceedings of the Institution of Mechanical Engineers, Part J:

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“…Considering the significance of the pressure distribution of roller elements on the fatigue life estimation, Tong et al [8] extended the 3D elastic contact method to simulate the contact pressure and analyzed the fatigue life of a tapered roller bearing with the consideration of the angular misalignment effect. Yang et al [9] analyzed the effects of the combined external loads and angular misalignment on the double-row tapered roller bearing, and the results demonstrated that the external load, rotation speed, and angular misalignment had a significant influence on the fatigue life of a double-row tapered roller bearing. Warda et al [10,11] investigated the effect of the correction parameters of roller generators and angular misalignment on the fatigue life of the radial cylindrical roller bearing, in which the bearing radial clearance and complex loads were both taken into account.…”

Section: Of 21mentioning

confidence: 99%

Fatigue Life Analysis of Ball Bearings and a Shaft System Considering the Combined Bearing Preload and Angular Misalignment

Zhang

Wang

et al. 2020

Applied Sciences

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Bearing preload significantly affects the running performance of a shaft-bearing system including the fatigue life, wear, and stiffness. Due to the mounting error, the bearing rings are often angularly misaligned. The effects of the combined bearing preload and angular misalignment on the fatigue life of ball bearings and a shaft-bearing system are analyzed in this paper. The contact force distribution of angular contact ball bearings in the shaft-bearing system is investigated based on the system model. The system model includes the bearing model, and the shaft model is verified by comparing with the manufacturer’s manual and the results from other theoretical models, with the difference between the results from the present bearing model and manufacturer manual within 3%. The global optimization method is used to replace the Newton–Raphson algorithm to solve the ball elements’ displacements and friction coefficients, which improves the computation efficiency of the system model. The fatigue life of each bearing is evaluated with the consideration of the two preload methods and two angular misalignment cases. The fatigue life results show that the system life at the optimal angular misalignment is more than 1.5 times that without angular misalignment at the low preload value, and this ratio decreases as the preload value increases. The optimal angular misalignment of both the shaft-bearing system and the misaligned bearing is not always consistent, which depends on the preload value and bearing life. Both the constant-displacement preload and constant-force preload do not cause a significant difference in the highest system life. The different misaligned bearings can lead to different highest system lives as the preload value is low.

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“…Yang et al [12] discussed the mechanical properties of double-row tapered roller bearings through expanding the mathematical model of three degrees of freedom, and analysed the contact load and fatigue life of bearings under different loads. Quagliato et al [13] predicted the life of roller bearings by accelerated testing approach and finite element (FE) models.…”

Section: Introductionmentioning

confidence: 99%

Fatigue Life Prediction of Rolling Bearings Based on Modified SWT Mean Stress Correction

Huang

et al. 2020

Preprint

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Mean stress has a great influence on fatigue life, commonly used stress-based life prediction models can only fit the test results of fatigue life under specific stress ratio or mean stress but cannot describe the effect of stress ratio or mean stress on fatigue life. Smith, Watson and Topper (SWT) proposed a simple mean stress correction criterion. However, the SWT model regards the sensitivity coefficient of all materials to mean stress as 0.5, which will lead to inaccurate predictions for materials with a sensitivity coefficient not equal to 0.5. In this paper, considering the sensitivity of different materials to mean stresses, compensation factor is introduced to modify the SWT model, and several sets of experimental data are used for model verification. Then, the proposed model is applied to fatigue life predictions of rolling bearings, and the results of proposed method are compared with test results to verify its accuracy.

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Mechanical behavior of double-row tapered roller bearing under combined external loads and angular misalignment

Cited by 59 publications

References 18 publications

Impact of journal bending on the failure of axle bearings in railroad passenger cars

Impact of journal bending on the failure of axle bearings in railroad passenger cars

Fatigue Life Analysis of Ball Bearings and a Shaft System Considering the Combined Bearing Preload and Angular Misalignment

Fatigue Life Prediction of Rolling Bearings Based on Modified SWT Mean Stress Correction

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