Analysis of vibration characteristics of gear system during start-stop process
Journal of Mechanical StrengthVol. 47, Issue 6, Pages: 1-10(2025)
作者机构:
1.华东交通大学 机电与车辆工程学院,南昌 330013
2.安徽大学 电气工程与自动化学院,合肥 230601
作者简介:
CAO Zheng, E-mail: caozheng@ahu.edu.cn
基金信息:
National Natural Science Foundation of China(51965018);Education Department Science and Technology Project of Jiangxi Province(GJJ2200603);Natural Science Foundation of Anhui Province(2108085QE224)
TU Wenbing,HU Dengliang,WANG Hao,et al. Analysis of vibration characteristics of gear system during start-stop process[J]. Journal of Mechanical Strength,2025,47(6):1-10.
TU Wenbing,HU Dengliang,WANG Hao,et al. Analysis of vibration characteristics of gear system during start-stop process[J]. Journal of Mechanical Strength,2025,47(6):1-10. DOI: 10.16579/j.issn.1001.9669.2025.06.001.
Analysis of vibration characteristics of gear system during start-stop process
When the gear system starts or stops in non-stationary working conditions
a sharp change of the speed can cause it to exhibit complex vibration characteristics which has a significant impact on the performance and lifespan of the gear. Considering the influence of time-varying meshing stiffness
backlash and gear meshing error
a dynamics model of spur gear system was established. The influence of external load and angular acceleration on the vibration characteristics of the start-stop process was studied. At the same time
the time-frequency analysis of the non-stationary vibration signal of the gear system was carried out by using the short-time Fourier transform. The results show that increasing the load and angular acceleration during the start and stop processes will exacerbate the degree of vibration and impact of the gear pair
and both will make the unstable motion process in the early start period end earlier
and the unstable motion process in the late stop period appear later
but the impact components in the late start period (the early stop period) will increase (decrease). In the frequency domain
increasing the external load will enhance the energy of the harmonic component of the gear system’s meshing frequency
but it has no effect on the fundamental energy of the meshing frequency. However
increasing the angular acceleration will enhance the energy of both the fundamental and harmonic components of the meshing frequency.
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