Dynamic Test and Simulation of High-speed Train Polygonal Wheels
It is found that there are 18-19 order wheel polygons in the wheels of an EMU. In order to study the in fluence of wheel polygons on the vibration behavior of the vehicle, the line test of the vehicle was carried out, and the vibration acceleration of the key components was measured and analyzed. Ba...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Editorial Department of Electric Drive for Locomotives
2021-11-01
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| Series: | 机车电传动 |
| Subjects: | |
| Online Access: | http://edl.csrzic.com/thesisDetails#10.13890/j.issn.1000-128x.2021.06.005 |
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| Summary: | It is found that there are 18-19 order wheel polygons in the wheels of an EMU. In order to study the in fluence of wheel polygons on the vibration behavior of the vehicle, the line test of the vehicle was carried out, and the vibration acceleration of the key components was measured and analyzed. Based on the line tracking test conditions, the SIMPACK was used to establish the dynamic simulation model, and the measured wheel polygon data was used as the input. The vibration data of each key component obtained by the line experiment and the dynamic simulation was compared from the time domain and frequency domain, and the reasons for the difference of the comparison results were analyzed. The results showed that the line test data of the vertical acceleration of the frame were slightly larger than the simulation data, and the overall difference of the vertical acceleration of the axle box was small. The vibration energy of the frames in the line test and simulation test was concentrated at about 540 Hz, the vibration energy of the axle box in the simulation test was concentrated at 527 Hz, and the vibration energy of the axle box in the line test was concentrated at 542 Hz, which was close to the frequency caused by the 19th-order wheel polygon (547.81 Hz), and the fluctuation trend of the vibration energy of the two were roughly similar. The simulation test can basically restore the line test and accurately re flect the in fluence of wheel polygon on vehicle vibration behavior. |
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| ISSN: | 1000-128X |