Influence of fluctuating transverse wind load on smoothness of high-speed train curve running
In order to explore the influence of fluctuating cross wind load on the curve passing stability and safety of high-speed train, the three-marshalling train dynamics model was established by using SIMPCAK in this paper. The simulation of pulsating wind aerodynamic load was realized by MATLAB and load...
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| Main Authors: | , |
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| Format: | Article |
| Language: | zho |
| Published: |
Editorial Department of Electric Drive for Locomotives
2022-11-01
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| Series: | 机车电传动 |
| Subjects: | |
| Online Access: | http://edl.csrzic.com/thesisDetails#10.13890/j.issn.1000-128X.2022.04.101 |
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| Summary: | In order to explore the influence of fluctuating cross wind load on the curve passing stability and safety of high-speed train, the three-marshalling train dynamics model was established by using SIMPCAK in this paper. The simulation of pulsating wind aerodynamic load was realized by MATLAB and loaded into the vehicle body centroid. The time / frequency response of the train under wind load was calculated. The line parameters were set with reference to relevant standards, the influence of load curve both inside and outside horizontal wind and the vibration response of vehicles in the marshalling were analyzed. Then, the effects of different superelevation, radius of circular curve, wind attack angle, wind speed and vehicle speed on vehicle safe passage of curve and the corresponding limits were analyzed. The results showed that the pulsating wind was easy to arouse the low frequency vibration of the train structure below 3 Hz. The difference of wind-vehicle parameters leaded to the difference within the train dynamic response in the marshalling, among which the first train T1 was most sensitive to the transverse wind when the wind attack angle α = 60°-90°. In the case of deficient superelevation, the inside wind dominated the lateral response of the vehicle, while in the case of over elevation, the outside wind dominated the lateral response. The decrease of the radius of the circular curve and the increase of the wind speed and the train speed would make the vehicle safety deteriorate rapidly. Under the conditions of speed at 200 km/h, wind speed at 12 m/s and wind direction angle at 90°, the safe radius of the circular curve was 3 800 m. Under the conditions of speed at 200 km/h, wind direction angle at 90° and circular curve at 3 200 m, the maximum wind speed was limited to 25 m/s. Under the conditions of wind angle at 90°, circular curve at 3200 m and wind speed at 12 m/s, the maximum speed was limited to 300 km/h. |
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| ISSN: | 1000-128X |