Vibration feature of spur gear transmission with non-uniform depth distribution of tooth root crack along tooth width

Ning, Jieyu; Chen, Zaigang; Wang, Yawen; Li, Yifan; Zhai, Wanming

doi:10.1016/j.engfailanal.2021.105713

Cited by 39 publications

(13 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Noise and vibration are common concerns in power transmission systems. Design considerations such as gear tooth profile optimization, proper backlash control, and the use of damping techniques can help mitigate noise and vibration issues (NING et al, 2021). By minimizing the excitation forces and optimizing gear geometry, noise and vibration levels can be significantly reduced, improving the overall performance and user experience (SINGH et al, 2022).…”

Section: Design Considerations and Optimization Techniquesmentioning

confidence: 99%

Determining the Maximum Power Transfer Capacity of Spur Gears Mounted on Shafts With Spline Bushes

Filho¹,

Melo²,

Silva³

et al. 2023

JER

View full text Add to dashboard Cite

This technical article focuses on determining the maximum power transfer capacity of spur gears mounted on shafts with spline bushes using an interference fit. Spur gears play a crucial role in power transmission systems, and the use of spline bushes with an interference fit provides enhanced stability, load distribution, and safety. The gear is mounted on the spline bush, which, in turn, is mounted on the shaft using interference fit. This arrangement ensures that in case of torque overload, the interference fit allows the spline bush to slip preventing mechanical structural failure of the transmission elements. Understanding the maximum power capacity of these gear systems is essential for ensuring reliable and efficient operation. The article provides an overview of spur gears, spline bushes, and the benefits of an interference fit. It explores the factors influencing power transmission and presents analytical methods for calculating critical parameters. A case study calculation is included to demonstrate the application of the discussed methods. Design considerations and optimization techniques for enhancing power capacity are also discussed. By determining the maximum power transfer capacity, engineers can make informed design decisions, optimize gear systems, and ensure both reliable power transmission and safety.

show abstract

Section: Design Considerations and Optimization Techniquesmentioning

confidence: 99%

Determining the Maximum Power Transfer Capacity of Spur Gears Mounted on Shafts With Spline Bushes

Filho¹,

Melo²,

Silva³

et al. 2023

JER

View full text Add to dashboard Cite

show abstract

“…Considering the internal interactions of the motor bearings and system vibration environment, the traction motor exhibits complex dynamic characteristics under the effect of rotor eccentricity. Besides, the time-varying gear mesh stiffness can be obtained by the corresponding calculating method proposed by Chen et al 31,32 Dynamic forces and torques induced by rotor eccentricity…”

Section: Locomotive-track Spatially Coupled Dynamics Model With An Ec...mentioning

confidence: 99%

Effect of rotor eccentricity on the dynamic performance of a traction motor and its support bearings in a locomotive

Liu

Chen

Xia

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part F:

Self Cite

View full text Add to dashboard Cite

Rotor eccentricity is a common fault of traction motors during operation. To ensure the stability and safety of the traction motor, it is essential to analyze the effect of rotor eccentricity on the dynamic performance of the traction motor, particularly the motor bearings. This study focuses on the extraction of the fault vibration features of a locomotive in the presence of rotor eccentricity under complex internal and external excitations from the traction power transmissions and wheel-rail interactions. A spatial locomotive-track coupled dynamics model with an eccentric rotor motor is applied in this study, and the detailed mechanical structures of the traction motor and motor bearings are comprehensively considered. The results indicate that rotor eccentricity can deteriorate the vibration conditions of the traction motor and intensify the interactions between the components of the motor bearings. Due to the effect of the time-varying mesh forces, the variation in the loaded region of the non-driving end bearing is more significant than that of the driving end bearing.

show abstract

“…For instance, the gear system may resonate [24] or even lose stability [25] during the variable speed operation of the vehicle. Such a phenomenon has not yet been observed in the constant speed state [26,27]. In addition, the variable speed may affect the status monitoring and diagnosis of the wheelset because the change of speed leads to different dynamic response characteristics of wheel faults [28,29].…”

Section: Introductionmentioning

confidence: 99%

Dynamic Nonstationary Representations of a Railway Vehicle Considering Wheel Polygonalization under Variable Speed Conditions

Zhao

Yang

et al. 2023

Preprint

View full text Add to dashboard Cite

Wheel Polygonalization is one of the most common failures of the wheelset, which can directly affect the safety and comfort of railway vehicle operation. In the actual condition, traction/braking torque continuously acts on the polygonal wheel fault can result in the modulation of its vibration representation, and then influence the effect of the feature exaction of the polygonal wheel faults. Considering this phenomenon, this study aims to clarify the forming mechanism of fault signals under variable speed conditions to improve the accuracy of feature extraction and ensure the safe operation of vehicles. This paper derived the Lagrangian equations with the dissipation function of a railway vehicle model with polygonal wheel fault under traction/braking conditions. After that, the modulation representation under constant speed, linear variable speeds, and nonlinear variable speeds are investigated, respectively. Finally, the vibration evolution of polygonal faults under different working conditions is visualized using statistical features. Compared with the constant speed, the curve in the time domain has more high-frequency fluctuations under variable conditions, and the phase modulation causes the half-wave asymmetry of the waveform. In the time-frequency domain, the continuous input of torque increases the harmonics frequency and side frequency response of fault response and excites the resonance frequency of the vehicle system. The dynamic evolution of fault statistical characteristics is positively correlated with speed and fault severity, and the fluctuation is sharper under braking conditions. The results can provide the theoretical support for feature extraction, interpretable features, and intelligent diagnosis of polygon faults.

show abstract

Vibration feature of spur gear transmission with non-uniform depth distribution of tooth root crack along tooth width

Cited by 39 publications

References 36 publications

Determining the Maximum Power Transfer Capacity of Spur Gears Mounted on Shafts With Spline Bushes

Determining the Maximum Power Transfer Capacity of Spur Gears Mounted on Shafts With Spline Bushes

Effect of rotor eccentricity on the dynamic performance of a traction motor and its support bearings in a locomotive

Dynamic Nonstationary Representations of a Railway Vehicle Considering Wheel Polygonalization under Variable Speed Conditions

Contact Info

Product

Resources

About