Modeling methods of air spring in system dynamics of a high-speed EMU

被引：0
|
作者：
机构：
[1] School of Mechanical Engineering, Southwest Jiaotong University
[2] NEL for High Speed Train, CSR Qingdao Sifang Co. LTD
来源：
Qi, Z. | 1600年 / Chinese Vibration Engineering Society卷 / 33期
关键词：
Air spring; High-speed EMU; Modeling methods; System dynamics;
D O I：
10.13465/j.cnki.jvs.2014.12.011
中图分类号：
学科分类号：
摘要：
Dynamic models of a high-speed EMU's air spring are mainly sorted in three types including a linear model composed of a static stiffness spring and a damper in parallel, a non-linear model based on the hydromechanics and pneumatics theory and a complete model with a complete pneumatic suspension system. From the quasi-static behavior analysis of the three types of models and the vehicle system dynamic simulation of high-speed EMU, it was found that the non-linear model and the complete model possess the similar hysteretic curves and the linear model has a higher damping, but the vehicle running safety indexes calculated with the three models agree well. The study results indicated that in dynamic calculation of high-speed EMU, for the running safety index, the linear model can satisfy the engineering requirements; but for the ride comfort index, it's better to use the non-linear model or the complete model to model an air spring to be closer to the actual situation; as the physical parameters of the complete model are too many to be identified, the non-linear model is recommended for high-speed EMU dynamic calculation.
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页码：63 / 68+105
相关论文
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