Title: Study on the Influence of the Track Gauge on Vehicle Yaw Stability
Abstract: Based on the relationship between the inertia force and the hunting frequency wavelength of the wheelset, the influence of the track gauge on the vehicle yaw stability was studied. The analysis results were validated through the numerical calculations of the eigenvalue for single wheelset running gear and the bogie running gear under different track gauge. Results show that for single wheelset running gear, the wider is the track gauge the higher is the critical stability speed of the vehicle. But for the bogie running gear, the wider is the track gauge the lower is the critical stability speed of the vehicle. The critical stability speed of the single wheelset running gear can be improved after the elastic location being adopted. The optimized suspension design can make the rolling stock achieve high critical stability speed after the elastic location being adopted for the bogie. For the bogie running gear, the impact of the speed on its stability is equivalent with that of the wheel base. Under otherwise fixed conditions, 20% increase of the wheel base can lead to 20% increase of its critical stability speed. The equivalent conicity of the wheel tread and the nominal rolling circle diameter have the same impact with the track gauge on the critical stability speed of the single wheelset or bogie running gear. To increase the conicity or decrease the wheel diameter, both can reduce the stability of the rolling stock.
Publication Year: 2010
Publication Date: 2010-01-01
Language: en
Type: article
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