A state-of-the-art review on uncertainty analysis of rotor systems

Fu, Chao; Sinou, Jean-Jacques; Zhu, Weidong; Lu, Kuan; Yang, Yue

doi:10.1016/j.ymssp.2022.109619

Cited by 48 publications

(5 citation statements)

References 281 publications

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“…Four cases have been analyzed, including (a) fault-free rotor, (b) misalignment rotor, (c) rub-impact rotor and (d) rotor with both misalignment and rub-impact. These dynamics analyses could be meaningful for the more in-depth fault detection [29] and uncertainty propagations [30] in such rotor systems. The vibrational response of the dual-rotor bearing system is calculated by the Runge-Kutta numerical integration method.…”

Section: The Vibration Analysis Of the Faulty Dual-rotor Bearing Systemmentioning

confidence: 99%

Nonlinear dynamic behavior of a dual-rotor bearing system with coupling misalignment and rubbing faults

Lu¹,

Cheng²,

Zhang³

et al. 2022

Meas. Sci. Technol.

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Taking the dual rotor system in the aero-engine as the research object, the vibration behaviors of the dual rotor bearing system with fault-free, misalignment fault, rub impact fault and misalignment rub impact coupling fault are studied, respectively. Firstly, the three-dimensional model of the dual rotor bearing system is established, and then the first six modes and critical speeds of the dual rotor bearing system are obtained by the finite element method. Then, the dynamic equations of the dual rotor bearing system with fault-free, misalignment fault, rub-impact fault and misalignment rub-impact coupling fault are derived based on the Lagrange method. The Runge-Kutta method is used to solve the dynamic equation, and the nonlinear dynamic response of the system is obtained. The vibration behaviors of the dual rotor system with misalignment fault, rub-impact fault and misalignment rub impact coupling fault are analyzed and discussed through the time history, phase diagram, and frequency spectrum of the rotor. The vibration behaviors of the first six modes of the dual rotor system with fault-free, misalignment fault, rub-impact fault and misalignment rub-impact coupling fault are analyzed, respectively. The results can provide theoretical guidance for structural optimization design of the aero-engine rotor system and the prior decision information for misalignment and rub-impact coupling fault diagnosis.

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Section: The Vibration Analysis Of the Faulty Dual-rotor Bearing Systemmentioning

confidence: 99%

Nonlinear dynamic behavior of a dual-rotor bearing system with coupling misalignment and rubbing faults

Lu¹,

Cheng²,

Zhang³

et al. 2022

Meas. Sci. Technol.

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show abstract

“…As a result, timely and accurate machine health monitoring plays a far more important role [ 1 ]. Bearing failure, which is generally brought on by improper mounting or inappropriate lubrication, is one of the most common causes of a mechanical breakdown, and has consequently led to a remarkable amount of continuous studies [ 2 ]. Significant progress has been made in fault diagnosis based on vibration signals employing methods, including time/frequency domain analysis, modal analysis, finite element analysis, etc.…”

Section: Introductionmentioning

confidence: 99%

Acoustic-Based Rolling Bearing Fault Diagnosis Using a Co-Prime Circular Microphone Array

Chen

2023

Sensors

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This study proposes a high-efficiency method using a co-prime circular microphone array (CPCMA) for the bearing fault diagnosis, and discusses the acoustic characteristics of three fault-type signals at different rotation speeds. Due to the close positions of various bearing components, radiation sounds are seriously mixed, and it is challenging to separate the fault features. Direction-of-arrival (DOA) estimation can be used to suppress noise and directionally enhance sound sources of interest; however, classical array configurations usually require a large number of microphones to achieve high accuracy. To address this, a CPCMA is introduced to raise the array’s degrees of freedom in order to reduce the dependence on the microphone numbers and computation complexity. The estimation of signal parameters via rotational invariance techniques (ESPRIT) applied to a CPCMA can quickly figure out the DOA estimation without any prior knowledge. By using the techniques above, a sound source motion-tracking diagnosis method is proposed according to the movement characteristics of impact sound sources for each fault type. Additionally, more precise frequency spectra are obtained, which are used in combination to determine the fault types and locations.

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“…Fu et al 37–41 have done a lot of in-depth research based on this method considering the different types of nonlinearities in rotor systems, such as unbalance force, support nonlinearities, rub-impact, and clearance. In addition, the literature review on rotor systems with uncertainty physical parameters is presented in Fu et al 42 Xiang et al 43 presented a parameter sensitivity analysis method to investigate the motion characteristics of the slider-crank mechanism with joint space based on the Chebyshev interval analysis method. Based on the interval method, Jin and Zhang 44 presented the reliability analysis model to calculate the dynamic reliability of the ball bearing-rotor system and explored the coupling effect between contemporaneous meta-action of the CNC.…”

Section: Introductionmentioning

confidence: 99%

Research on the vibration characteristics of the ball bearing considering the uncertain bearing-shaft interference fit

Liu

Zhang

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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Due to the exist of the inevitable dimensional tolerance and assembling errors in the ball bearing, the interference amounts between the inner ring and the connected shaft are uncertain but bounded, which could directly affect the dynamics performance of the rotor-ball bearing system. Whereas, most of the works on the field of dynamics in a ball bearing have considered the varying compliance (VC) vibration as deterministic vibration and there are few quantitative studies considering the uncertain factors. Therefore, in this paper, an uncertain ball bearing-rotor dynamic model is presented based on the Chebyshev interval method. Firstly, the uncertain interference amounts between the bearing inner ring and the connected shaft are modeled by the Chebyshev interval method. Then the radial clearance and actual interference amounts of ball bearing are derived by the bearing-shaft interference fit model. The time-dependent ball-raceway contact probability is formulated and the influence of the average and deviation coefficient of the initial interference amounts on the vibration behaviors of the rotor under various rotational speeds are investigated based on the double degrees of freedom (2-DOF) ball bearing system. The numerical cases show that the amounts of the bearing-shaft interference fit are uncertain and could be affected by rotational speed, which have an obvious influence on the dynamic performance of the rotor-ball bearing system. Reasonable design of the interference amounts could reduce the dispersion of the displacement and time-varying stiffness. The numerical results obtained by the present study are compared to the Monte Carlo simulation (MCS), which show the validity of the study.

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A state-of-the-art review on uncertainty analysis of rotor systems

Cited by 48 publications

References 281 publications

Nonlinear dynamic behavior of a dual-rotor bearing system with coupling misalignment and rubbing faults

Nonlinear dynamic behavior of a dual-rotor bearing system with coupling misalignment and rubbing faults

Acoustic-Based Rolling Bearing Fault Diagnosis Using a Co-Prime Circular Microphone Array

Research on the vibration characteristics of the ball bearing considering the uncertain bearing-shaft interference fit

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