Influence of Wheelset Structural Elastics and Profile Wear on the Vibration Performance of High-speed Trains

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Journal of Vibration and Shock ›› 2015, Vol. 34 ›› Issue (5) : 207-212.

Both wheel wear and the bending mode of wheel flexible have great effects on vehicle performances. Dynamics model with three different bending modes of wheelset are built separately according to the high-speed train which is on service in Wu-Guang railway. Vehicle stability and vibration performances are studied under different bending modes of wheelset while considering wheel wear which is the biggest change factor in service. It comes to a conclusion that the first-order bending mode has great influence on vehicle service performance while the second order and the third can be almost neglected. The critical speed is declined about 10% of the first bending mode and the vertical acceleration of wheelset grows faster. The bending frequency of the flexible wheelsets and the changing of preparation frequency of the whole vehicle are the primary reason of the vehicle performances decline.

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Abstract

Both wheel wear and the bending mode of wheel flexible have great effects on vehicle performances. Dynamics model with three different bending modes of wheelset are built separately according to the high-speed train which is on service in Wu-Guang railway. Vehicle stability and vibration performances are studied under different bending modes of wheelset while considering wheel wear which is the biggest change factor in service. It comes to a conclusion that the first-order bending mode has great influence on vehicle service performance while the second order and the third can be almost neglected. The critical speed is declined about 10% of the first bending mode and the vertical acceleration of wheelset grows faster. The bending frequency of the flexible wheelsets and the changing of preparation frequency of the whole vehicle are the primary reason of the vehicle performances decline.

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High-speed train / service cycle / wheel wear / wheel flexible / vibration acceleration / time frequency analysis

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HAN Peng，ZHANG Wei-hua. Influence of Wheelset Structural Elastics and Profile Wear on the Vibration Performance of High-speed Trains[J]. Journal of Vibration and Shock, 2015, 34(5): 207-212

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