Influence of Inter-vehicle Damper on the Lateral Low-frequency Swaying of Power Centralized EMUs

doi:10.3901/JME.260124

Abstract

Abstract: The low-frequency lateral swaying of the power car of power centralized EMUs has a detrimental impact on the lateral ride comfort. In response to this phenomenon, a multiple rigid body dynamic model of power centralized EMUs is established and the abnormal swaying phenomenon is reproduced. Then a further proposal is made for the installation of an inter-vehicle damper in order to improve the lateral dynamic performance of the power car. It can be observed that both the inter-vehicle longitudinal damper and the inter-vehicle lateral damper, with a reasonable degree of stiffness and damping, can effectively eliminate the low-frequency lateral swaying. Finally, the process of orthogonal optimization is carried out on the key parameters of the inter-vehicle damper and bogie suspension in order to enhance the lateral dynamic performance. The results demonstrate that the maximum value of the carbody lateral vibration acceleration is significantly reduced, with the lateral Sperling index of the carbody respectively decreasing by 34.19% and 39.74% when the optimized matching scheme of inter-vehicle longitudinal damper or inter-vehicle lateral damper is implemented. The outcomes can offer a theoretical foundation for suppressing the low-frequency lateral swaying problem of power car of power centralized EMUs.

Key words: power centralized EMUs, low-frequency lateral swaying, inter-vehicle damper, orthogonal optimization

CLC Number:

U270

JIANG Chenchen, Lü Kaikai, ZHANG Zhichao, CUN Dongdong, LING Liang, WANG Kaiyun. Influence of Inter-vehicle Damper on the Lateral Low-frequency Swaying of Power Centralized EMUs[J]. Journal of Mechanical Engineering, 2026, 62(4): 271-282.

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