高速列车系统动力学空气弹簧建模方法研究

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振动与冲击 ›› 2014, Vol. 33 ›› Issue (12) : 63-68.

论文

高速列车系统动力学空气弹簧建模方法研究

戚壮1，李芾1，黄运华1，虞大联2

作者信息 +

Study on the Modeling Methods of Air Spring in the System Dynamics of High-speed EMU

QI Zhuang1, LI Fu1, HUANG Yun-hua1, YU Da-lian2

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摘要

高速列车空气弹簧动力学模型主要分为三类：定刚度与定阻尼并联的线性模型、基于流体力学与气动力学原理的非线性模型以及考虑整体气动悬挂系统的完全模型。通过准静态动力学特性分析和高速动车组动力学模拟计算得出，非线性模型与完全模型具有相似的回滞曲线，线性模型具有较高的阻尼特性，但是在三种空气弹簧模型下计算出的车辆运行安全性指标具有较一致的结果。研究结果表明，在高速动车组动力学计算中，对于运行安全性指标，用空气弹簧线性模型即可满足工程要求；而对于平稳性指标，需要用非线性模型或完全模型进行建模，才能与实际更加接近；由于完全模型所需要确定的物理量较多，故在实际应用中建议采用非线性模型。

Abstract

The dynamics models of the high-speed EMU’s air spring are mainly sorted in three types: the linear model composed of a static stiffness spring and a damper in parallel, the non-linear model based on the hydromechanics and pneumatics theory and the complete model considered the complete pneumatic suspension system. From the analysis of the quasi-static behavior of the three types of models and the vehicle system dynamics simulation of high-speed EMU, it was found that, the non-linear model and the complete model possess the similar hysteresis curves and the damping of the linear model is higher, but the three models’ dynamics calculation results agree well on the vehicle running safety index. The results of the study indicate that, in the dynamics 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 for modeling the air spring to approach 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 in the high-speed EMU dynamics calculation.

导出引用

戚壮;李芾;黄运华;虞大联. 高速列车系统动力学空气弹簧建模方法研究[J]. 振动与冲击, 2014, 33(12): 63-68

QI Zhuang;LI Fu;HUANG Yun-hua;YU Da-lian. Study on the Modeling Methods of Air Spring in the System Dynamics of High-speed EMU[J]. Journal of Vibration and Shock, 2014, 33(12): 63-68