Research on vibration characteristics of gear-coupled multi-shaft rotor-bearing systems under the excitation of unbalance

Zhu, Lisha; Zhang, Rui; Zhang, Changqing

doi:10.21595/jve.2017.18141

Cited by 5 publications

(5 citation statements)

References 11 publications

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“…The generated results are more closer to real values, but it increases the computation time [18,19]. Not only for spur gears, but also for helical gears, both LMM-and FEM-based approaches have been used for development of a wear model [34], determining the effect of manufacturing defects and eccentricity [35][36][37], defining influence of the profile error and pitting [38], finding sliding friction with a rectangular spall [39], tooth breakage with sliding friction [40], outlining assembly errors and tooth shape deviations [41], elucidating TVMS [42][43][44], and finding backlash, gyroscopic effect, and transmission error excitation [45].…”

Section: Simulation-based Approachesmentioning

confidence: 99%

A Review on Vibration-Based Fault Diagnosis Techniques for Wind Turbine Gearboxes Operating Under Nonstationary Conditions

Sharma

2021

J. Inst. Eng. India Ser. C

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Numerous studies on vibration-based techniques for fault diagnosis of wind turbine gearboxes operating under nonstationary conditions have been reported. In spite, a review on vibration-based condition monitoring and fault diagnosis techniques for gearboxes of wind turbines operating under nonstationary conditions is unavailable. Thus, the objective of this review is to discuss filtering, decomposition, entropy, and cyclostationary analysis techniques, as well as summarizing the remaining issues. This review will discuss various vibration-based diagnostic approaches developed for wind turbine gearboxes under nonstationary conditions, including both simulation and experimental approaches. Studies on dynamic models of gear systems and advanced signal-processing techniques developed for nonstationary conditions are reviewed. Additionally, the importance of multi-sensor and cointegration based approaches is discussed, and intelligent classification methods that have been used to distinguish healthy and faulty gear systems are also reviewed. Finally, the remaining research challenges are outlined.

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Section: Simulation-based Approachesmentioning

confidence: 99%

A Review on Vibration-Based Fault Diagnosis Techniques for Wind Turbine Gearboxes Operating Under Nonstationary Conditions

Sharma

2021

J. Inst. Eng. India Ser. C

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“…Due to the numerous degrees of freedom and the discrete external cutting load, the numerical analysis method incorporating equation (1) provides the only feasible method to resolve the dynamic response of the transmission system, according to the state of art. 15 The contact load on the active profile surfaces of the gear pair is expressed as:…”

Section: Reliability Model Establishmentmentioning

confidence: 99%

“…Yin et al 14 calculated the subsurface crack propagation through the three-dimensional FEA model with ANSYS Workbench transient analysis. Zhu et al 15 obtained vibration characteristics of gear-coupled multi-shaft rotor-bearing systems under unbalanced excitation.…”

Section: Introductionmentioning

confidence: 99%

Dynamic and gradual coupled reliability analysis of the transmission system of a shearer cutting arm

Zhu

Yuan

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part O:

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The strong impact and heavy load imposed on the transmission system of a shearer cutting arm is a potential cause of system variation and deterioration. And the overall equipment performance and output efficiency of a drum shearer cutting arm depends to a large degree on the reliability of the transmission system. Therefore, the current study proposes an innovative method for precise prediction of the reliability of the transmission system considering dynamic characteristic and performance degradation. Firstly, for the sake of quantifying the time-dependent reliability with deterioration parameters, a dynamic model of the geared rotor system is established based on the finite element method and the dynamic response is derived based on the main failure mode and the stochastic process model. Then the reliability and reliability sensitivity are estimated based on the probability perturbation theory and the fourth-order moment method. Finally, the proposed method is validated through a comparison to the canonical Monte Carlo Simulation method, which exhibits an average discrepancy of merely 3%. The present method serves as a theoretical guidance and applicable tool for both design and manufacture of coal shearers.

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“…Shearer belongs to large, heavy mining machinery, and some mines are hundreds of meters deep and the underground environment is very bad, which will inevitably make it difficult for shearer to move, flip, cut drum adjustment and so on, so its size should be reduced [7,14]. At the same time, vibration fault caused by high frequency excitation is the weak link of shearer reliability [23,26,27]. Therefore, it is of great significance to find a reasonable design method to reduce the size (mass) and high-frequency vibration of the cutting unit to reduce the occupied space and reduce its fault.…”

Section: 1backgroundmentioning

confidence: 99%

A Robust Optimization Method on the Transmission System of the Cutting Unit of Shearer

Gao

Chen

2020

Preprint

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The transmission system of the cutting unit of shearer is divided into three basic components: planetary reduction form, one gear on one shaft form and a double gears on one shaft. The dynamic differential equations of three basic components are established respectively, and the volume functions of each structure are obtained. The characteristics of the internal excitation of the transmission system are analyzed, and the solution methods of the motion parameters of each component are obtained based on the harmonic balance method. Taking the parameters such as tooth number, modulus and tooth width as optimized variables, and a robust optimization method with the minimum value of multi-parameter evaluation function weighted linearly by dimensionless volume and vibration for the transmission system of the cutting unit of shearer is presented. Taking a certain type of shearer as an example, the transmission system of the cutting unit is optimized by using the presented method. After the design, the size is reduced by 5.4%, the maximum torsional acceleration of the drum is reduced by 17.8%, and the maximum torsional acceleration of the first gear is reduced by 9.6%. The results show that the design method can reduce the manufacturing cost of shearer and reduce the failure rate of the cutting unit.

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Research on vibration characteristics of gear-coupled multi-shaft rotor-bearing systems under the excitation of unbalance

Cited by 5 publications

References 11 publications

A Review on Vibration-Based Fault Diagnosis Techniques for Wind Turbine Gearboxes Operating Under Nonstationary Conditions

A Review on Vibration-Based Fault Diagnosis Techniques for Wind Turbine Gearboxes Operating Under Nonstationary Conditions

Dynamic and gradual coupled reliability analysis of the transmission system of a shearer cutting arm

A Robust Optimization Method on the Transmission System of the Cutting Unit of Shearer

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