High-speed train gearbox housing vibration test based on small roller high-frequency excitation

ZHU Hai-yan; WANG Chao-wen; WU Ping-bo; CENG Jing; XIAO Qian

doi:10.19818/j.cnki.1671-1637.2020.05.011

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ZHU Hai-yan, WANG Chao-wen, WU Ping-bo, CENG Jing, XIAO Qian. High-speed train gearbox housing vibration test based on small roller high-frequency excitation[J]. Journal of Traffic and Transportation Engineering, 2020, 20(5): 135-150. doi: 10.19818/j.cnki.1671-1637.2020.05.011

Citation:

ZHU Hai-yan, WANG Chao-wen, WU Ping-bo, CENG Jing, XIAO Qian. High-speed train gearbox housing vibration test based on small roller high-frequency excitation[J]. Journal of Traffic and Transportation Engineering, 2020, 20(5): 135-150. doi: 10.19818/j.cnki.1671-1637.2020.05.011

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High-speed train gearbox housing vibration test based on small roller high-frequency excitation

doi: 10.19818/j.cnki.1671-1637.2020.05.011

1.
School of Mechatronics and Vehicle Engineering, East China Jiaotong University, Nanchang 330013, Jiangxi, China
2.
State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031, Sichuan, China

Funds:

National Natural Science Foundation of China U1934202

National Natural Science Foundation of China 51665015

Natural Science Foundation of Jiangxi Province 20202ACBL204008

Natural Science Foundation of Jiangxi Province 20181BAB206025

Natural Science Foundation of Jiangxi Province 20181ACB20007

Independent Subject of State Key Laboratory of Traction Power TPL2007

Science and Technology Project of Jiangxi Provincial Department of Education GJJ190294

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Author Bio:
ZHU Hai-yan(1975-), male, associate professor, PhD, zhupetrelcao@163.com
Received Date: 2020-03-27
Publish Date: 2020-10-25

Abstract

Abstract

To analyze the vibration characteristics and fatigue damage of a high-speed train gearbox housing, a small roller high-frequency excitation test stand was applied to study the vibration characteristics of gearbox housing under different vertical loads and speeds. In the test, the surface of roller was processed to the 13 th-order polygon with a radial jump amplitude of 0.05 mm, which could be equaled to a 20 th-order actual wheel polygon. The stress accumulation damage of gearbox housing per unit time was analyzed by the rain flow counting method and Miner linear damage rule. Analysis result indicates that effected by the resonance of the gearbox housing, the root mean square(RMS) values of transverse and vertical accelerations of each measuring point of the gearbox housing are minimal under different vertical loads and speeds at a running speed of the high-speed train of 200 km·h^-1. The RMS values of transverse and vertical accelerations of most measurement points are maximal when the vertical load is 23 t. The resonance of gearbox at the natural frequency of 573 Hz can be stimulated by the resonance frequency of test bench at a test speed of 100 km·h^-1 and main excitation frequency of the 20 th-order wheel polygon frequency shift of approximately 580 Hz at a test speed of 300 km·h^-1. The cumulative stress damage per unit time at each measuring point of gearbox housing largely fluctuates when the initial speed of wheel is between the speed grades of acceleration from 0 to 200 km·h^-1 and deceleration from 300 to 0 km·h^-1. The stress cumulative damage per unit time of each measuring point in the other speed grades has small fluctuations. The maximum value of stress damage per unit time is obtained in the tooth surface observation hole of a large gearbox housing, 3.72×10^-10, while the minimum damage is located above the bearing of a small gearbox housing, only 8.29×10^-18. Thus, the vibration acceleration of gearbox housing is largely affected by the resonance of gearbox and the deceleration operation and speed grades of test stand. However, the vertical load has a small influence on the stress cumulative damage per unit time under the conditions of non-resonance of gearbox housing, without deceleration operation, and the same speed grade of test stand.
- high-speed train,
- high-frequency excitation,
- wheel polygon,
- gearbox housing,
- vibration characteristic,
- fatigue damage

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References(31)

References

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High-speed train gearbox housing vibration test based on small roller high-frequency excitation

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High-speed train gearbox housing vibration test based on small roller high-frequency excitation

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