Study on influence of inter-vehicle longitudinal damper on dynamic performance of air spring tilting high-speed train

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Journal of Vibration and Shock ›› 2023, Vol. 42 ›› Issue (11) : 271-277.

LI Zhenqian， NIU Jiang， CHI Maoru， LUO Yun

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Abstract

In order to study the influence of inter-vehicle longitudinal damper on dynamic performance of air spring tilting high-speed train, based on the model of a certain type of high-speed EMU, the nonlinear model of air spring containing tilting valve is considered, and the dynamic model of air spring tilting high-speed train with four motors and four trailers is established. With changing the stiffness and damping parameters of the inter-vehicle longitudinal damper, the influence on the stability, riding quality and curve performance of the air spring tilting train is analyzed. The results show that inter-vehicle longitudinal damper can reduce the lateral displacement of the car body of the air spring tilting train, and improve the riding quality and curve performance of the train. The lateral riding quality is reduced by 0.5%, the wheelset lateral force is reduced by 28.3%, the wheel-rail vertical force is reduced by 3.3%, the wheel unloading rate is reduced by 14.7%, and the derailment coefficient is reduced by 40.9%. At the same time, the inter-vehicle longitudinal damper can suppress the 1.3Hz yawing head vibration of the car body caused by the air spring tilting, and the acceleration amplitude of the car body rocker angle is reduced by 25.4%. The installation of the inter-vehicle longitudinal damper with reasonable parameters is conducive to improving the dynamic performance of the air spring tilting train.

Key words

inter-vehicle longitudinal damper / air spring tilting / high-speed train / dynamic performance of train

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LI Zhenqian， NIU Jiang， CHI Maoru， LUO Yun. Study on influence of inter-vehicle longitudinal damper on dynamic performance of air spring tilting high-speed train[J]. Journal of Vibration and Shock, 2023, 42(11): 271-277

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