Acoustic-vibration analysis of the gear-bearing-housing coupled system

Han, Jiyuan; Liu, Yang; Yu, Shuanghe; Zhao, Siyao; Ma, Hui

doi:10.1016/j.apacoust.2021.108024

Cited by 24 publications

(5 citation statements)

References 24 publications

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“…Vibration and radiated noise analyses of the gear system were performed, and the calculated results agreed well with the experimentally tested data [14]. Han et al developed a dynamic model of a gear rotor bearing system to determine the effect of meshing excitation on the gearbox vibration and noise, and an acoustic boundary element method was used to predict the gearbox noise distribution [15]. Gunasegaran used a higher-order spectral analysis technique to obtain acoustic data from vibration and airborne sound signals from a gearbox using a bispectral analysis [16].…”

Section: Introductionmentioning

confidence: 89%

Noise Prediction Study of Traction Arc Tooth Cylindrical Gears for New Generation High-Speed Electric Multiple Units

Tang,

Chen,

Sun

et al. 2023

Lubricants

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As the speed of the new generation of high-speed electric multiple units (EMU) increases, the requirements for vibration and noise reduction in traction gear trains are becoming higher and higher. Although most researchers have focused on the vibration mechanics analysis of gears, the actual noise has the most direct impact on passenger experience and safety. To address this problem, a new type of curved cylindrical gear is proposed to analyze the dynamic characteristics of the gear pair and predict its radiated noise based on the acoustic-vibration coupling theory using the finite element-boundary element method. Parametric modeling of the gear pair using CREO and assembly motion analysis were performed. ANSYS was used to analyze the stress distribution, inherent frequency, and inherent vibration pattern of the gear pair, and harmonic response analysis was performed using the modal superposition method to solve the displacement frequency response curve and vibration characteristics. ACTRAN was used to construct the free-field model, create acoustic excitation based on the acoustic-vibration coupling equation, set the field points, and predict radiated noise. The research results show that the noise is mainly concentrated in the tooth meshing area, and the root mean square RMS range of its sound pressure level value is 91–100 dB. Its dynamic characteristics and noise values are in line with the traction requirements of high-speed EMU, providing a new idea for improving the noise prediction of traction gears for new generation high-speed EMU, which in turn strongly support the noise control of high-speed EMU stock and thus improve the passenger experience and driving environment.

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Section: Introductionmentioning

confidence: 89%

Noise Prediction Study of Traction Arc Tooth Cylindrical Gears for New Generation High-Speed Electric Multiple Units

Tang,

Chen,

Sun

et al. 2023

Lubricants

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“…Subsequently, Chang et al 6 proposed a comprehensive coupled gearbox system dynamics model of a gear-shaft-bearing-shell system, which improved the accuracy of bearing response and thus more accurately estimated the radiation noise of the gearbox. In order to solve the noise problem generated by operating gearboxes, Han et al 7 proposed a computational method for predicting gearbox noise from steady dynamic response to acoustic radiation calculation.…”

Section: Introductionmentioning

confidence: 99%

Multi-objective optimization of gearbox based on panel acoustic participation and response surface methodology

Zhou

2022

Journal of Low Frequency Noise, Vibration and Active Control

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Aiming at noise problem of two-stage gearbox, this paper uses the panel acoustic contribution analysis (PACA) and response surface methodology to conduct structural-borne acoustics analysis and multi-objective optimization of gearbox. Using this optimization, optimal layout and parameters of the added ribs can be determined. The dynamic model of a spur gear-shaft-bearing system is built in consideration of the time-varying mesh stiffness, the time-varying bearing stiffness, and the flexibility of the shaft, while dynamic load of the bearing is obtained through solving the model. The dynamic load of bearings is considered as excitation to analyze the vibration and noise radiation characteristics of housing. Furthermore, acoustic transfer vector, modal acoustic contribution and PACA are used to select the region with the most acoustic contribution. The variable ribs structure model (VRSM) is established in this region. Finally, the VRSM are adopted to optimize the housing. The optimization model based on the peak sound pressure level (PSPL) and the ribs mass (Rm) is established by using response surface method. Through multi-objective optimization, the variable in VRSM can be modified or deleted to reduce the radiated noise of the gearbox. The optimization results demonstrate that the PSPL after optimization is decreased by 4.88 dB at frequency of 3130 Hz. At the same mass, the noise reduction effect of VRSM is 12% higher than that of standard rib. Therefore, the optimization effect of the housing structure is obvious. PACA-VRSM-RSM- NSGA-II technology provides a new research scheme for reducing the vibration and noise of the gearbox.

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“…Wang et al 25 proposed an improved calculation method to predict the vibration and noise of the gearbox, and found that after considering the flexibility of the shaft, the fluctuation amplitude of the dynamic load of the bearing was reduced and the main resonance mode of the gearbox changed. Han et al 26 established a nonlinear dynamic model of a gearbox considering time-varying friction and dynamic backlash, and discussed the effects of meshing excitation on vibration and noise of the gearbox.…”

Section: Introductionmentioning

confidence: 99%

Vibro-acoustic characteristics of gear-rotor-bearing coupled system under multi-source excitation

Wang

Zhou

Adayi

2022

Journal of Low Frequency Noise, Vibration and Active Control

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With the development of machinery toward high speed, high power, and high reliability, the vibration and noise problems of gearboxes become more prominent. The vibro-acoustic characteristics of gear-rotor-bearing coupled system are difficult to be characterized by the simple gear transmission system. This paper concentrated on modeling an improved dynamic model of gear-rotor-bearing system under multi-source excitation. The initial bending of shaft, precession effect, and gear eccentricity were included in the model to calculate the dynamic response. An extended computational method for predicting the radiation noise of a gearbox was developed. The distribution of the sound pressure around the gearbox was obtained by combining the finite element vibration analysis and boundary element noise analysis. Experimental vibration and noise measurements from a simplified gearbox confirmed the simulation results. The influences of precession effect on dynamic response and radiated noise of the gearbox were investigated. Results show that with the increase of input speed, the peak speeds of the system dynamic load increase and the resonance region shifts. The resonance regions of each field point of the gearbox are enlarged, and the noise is enhanced obviously. The results provide a theoretical basis for the further development of high-quality silent gearboxes.

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Acoustic-vibration analysis of the gear-bearing-housing coupled system

Cited by 24 publications

References 24 publications

Noise Prediction Study of Traction Arc Tooth Cylindrical Gears for New Generation High-Speed Electric Multiple Units

Noise Prediction Study of Traction Arc Tooth Cylindrical Gears for New Generation High-Speed Electric Multiple Units

Multi-objective optimization of gearbox based on panel acoustic participation and response surface methodology

Vibro-acoustic characteristics of gear-rotor-bearing coupled system under multi-source excitation

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