Contact characteristic and vibration mechanism of rolling element bearing in the process of fault evolution

Tu, Wenbing; Yang, Jie; Yu, Wennian; Luo, Yuanfang

doi:10.1177/1464419320985707

Cited by 10 publications

(4 citation statements)

References 41 publications

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“…Therefore, some slight impulses of contact force appear. However, the occurrence of the impulses is not completely owned by the roller bounce, 40 especially during t6–t7. The main factors of these impulses are the restress between the roller and the raceways during t6–t7 as shown in Figure 11, which also causes the big impulses in the vibration signal during t6–t7 as shown in Figure 14(b).…”

Section: Resultsmentioning

confidence: 99%

A dynamic model of defective bearing considering the detailed motion of the roller and the impact between the roller and the cage

Yang

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part K:

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To illustrate the vibration characteristics of the defective bearing more precisely, a dynamic model considering the detailed motion of the roller and the impact between the roller and the cage when the roller passes through the defect has been proposed. It overcomes the shortcomings of the previous models in which the roller's and cage's rotational speeds are set as constant values. The proposed model considers the detailed motion of the roller and the impact between the roller and the cage when the roller passes through the bearing defect. The validity and accuracy of the proposed model were verified by an experimental study. The motion characteristics, force characteristics, and vibration characteristics, when the roller passes through the defect, are analyzed. In addition, the vibration signals of the roller passing through two different types of defects are studied. The results show that the roller's rotational speed suddenly increases and the fluctuation amplitude of the revolution speed increases when the roller exits from the large defect. The large defect leads to high-frequency unstable collisions between the roller and the defective raceway. In addition, the slip velocity and the friction force between the roller and the raceway intensify the collision amplitude and generate high-frequency components of the vibration signal. They will also lower the frequency of the roller passing through the outer raceway, especially under high speed and light load conditions. The slipping and the restress between the roller and the defected raceway lead to small variations and big shocks in the vibration acceleration signal, respectively. These phenomena demonstrate the necessity of considering the detailed motion of the roller and the impact between the roller and the cage in the dynamic model.

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Section: Resultsmentioning

confidence: 99%

A dynamic model of defective bearing considering the detailed motion of the roller and the impact between the roller and the cage

Yang

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part K:

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“…This may be caused by the friction considered in the model. According to Equations ( 9) and (10), relative slip between two contact surfaces generates friction force. Even under the situation of zero cage slip, there is still a slight sliding velocity between the rolling element and the raceways.…”

Section: Model Validationmentioning

confidence: 99%

“…Surface imperfections (e.g., waviness, roundness, off-size rolling elements, etc.) inevitably existed on the machined surfaces due to manufacturing errors, which are also additional excitation sources to the bearing vibration [10]. Kankar et al [11] presented a dynamic analysis of a rigid rotor-bearing system with the consideration of the bearing surface waviness.…”

Section: Introductionmentioning

confidence: 99%

A Study on the Modeling Method of Cage Slip and Its Effects on the Vibration Response of Rolling-Element Bearing

Luo

Chen

et al. 2022

Energies

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Rolling-element bearings play vital roles in the dynamic vibration performance of the whole machinery. Hence, accurate modeling and assessment of the rolling-element bearing are beneficial for the well understanding of the vibration response of rolling-element bearing. However, cage slip is usually ignored in the traditional rolling-element bearing modeling methods, which has a direct influence on the rotating speed and friction force of the rolling elements. To settle the modeling problem of rolling-element bearing with cage slip, in this study, a nonlinear dynamic model with multiple degrees of freedom of the roller bearing is established. The cage slip, the motion of each roller, nonlinear contact, damping, and friction are taken into consideration. With the proposed method, a nonlinear traction model is presented to describe the friction forces induced by cage slip. Furthermore, both the friction force acting on rolling elements and the effects of cage slip on the vibration response are investigated based on the established model. Some comparisons between the proposed modeling method with cage slip and the classical method without cage slip are made. The results show that the friction force applied to the balls increases with the cage slip, friction coefficient, rotational speed, and radial load. A slight cage slip could be beneficial for reducing the vibration energy of rolling-element bearing; however, it will result in more friction loss and impact components.

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“…ere has been plentiful research on it in the literature carried out by different scholars [3][4][5]. Singh et al [6,7] analyzed the dynamic contact force and vibration mechanism between the rolling elements and the outer race with the bearing spalling defect.…”

Section: Introductionmentioning

confidence: 99%

Vibration Transmission Characteristics and Measuring Points Analysis of Bearing Housing System

Yang

Luo

et al. 2022

Shock and Vibration

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The vibration transmission characteristics of the bearing housing system are crucial for the system fault diagnosis based on vibration signals collected at various measuring points. To study its vibration transmission characteristics, a dynamic model of the rolling bearing housing system based on the elastic interface is established. The interference fit between the bearing outer ring and the bearing housing is modelled by contact pairs. The proposed model is verified by the experimental results, which demonstrate that the interference fit can be better simulated by contact pairs. Based on the comparisons between the vibration signals obtained from the defect point and the measuring points on the bearing surface, the transmission mechanism of the defect excitation and the generation mechanism of the bearing housing structural vibration are clarified. The change law of defect excitation through an interface and the effects of bearing operational conditions (load and speed) on the vibration signals of measuring points are summarized. The results show that the optimal measuring point on the bearing housing surface is the location that is closest to the defect when the bearing housing system is working under light loads or high speeds. However, when under low speeds, the preferred measuring points are the positions where the rigidity of the bearing housing structure is weak. The analysis results provide a theoretical basis for the sensor arrangement and improvement of fault diagnosis accuracy under different operating conditions.

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Contact characteristic and vibration mechanism of rolling element bearing in the process of fault evolution

Cited by 10 publications

References 41 publications

A dynamic model of defective bearing considering the detailed motion of the roller and the impact between the roller and the cage

A dynamic model of defective bearing considering the detailed motion of the roller and the impact between the roller and the cage

A Study on the Modeling Method of Cage Slip and Its Effects on the Vibration Response of Rolling-Element Bearing

Vibration Transmission Characteristics and Measuring Points Analysis of Bearing Housing System

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