车下设备悬挂参数与车体结构之间的匹配关系研究

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振动与冲击 ›› 2013, Vol. 32 ›› Issue (3) : 124-128.

论文

车下设备悬挂参数与车体结构之间的匹配关系研究

吴会超1，邬平波1，吴娜1，王忆佳1，单永林2

作者信息 +

The Study of matching relations between equipment suspension parameters and carbody structure

WU Huichao1, WU Pingbo1, WU Na1, WANG Yijia1, SHAN Yonglin2

Author information +

文章历史 +

摘要

本文通过建立等效欧拉梁车体与设备垂向耦合振动模型，研究了车下设备刚性悬挂与弹性悬挂对车体振动的影响。研究结果表明，车下设备采用弹性悬挂的设计方式能够有效抑制车体的弹性振动。为了研究车下设备弹性悬挂参数与车体结构之间的匹配关系，本文基于模态叠加法原理法建立了考虑车体弹性振动和车下设备的高速动车组刚柔耦合动力学模型。通过该三维模型分析了车下设备质量偏心和弹性悬挂参数对车体振动响应的影响规律。仿真结果表明，车下设备横向偏心主要影响车体的横向振动特性，而车下设备纵向偏心主要影响车体的垂向振动特性；当车下设备的悬挂频率接近车体的垂向弯曲频率时能够降低车体的整体振动水平，而当车下设备的悬挂频率低于车体的垂向弯曲频率时，提高车下设备弹性悬挂系统的阻尼能够一定程度上抑制车体的弹性振动。

Abstract

In this paper, the vertical dynamics model of carbody and equipment coupling is built to study different influences of carbody vibration between rigid suspension design of equipments and flexible suspension design of equipments. Results show that flexible suspension design can effectively suppress elastic vibration of carbody. In order to study the matching relation between suspension parameters of equipments and carbody structure, the Hybrid Multibody Dynamics model of EMU is set up based on the modal superposition method, considering carbody elastic vibration and equipments. This paper deals with the influence of equipments partial load and suspension parameters on carbody vibration. It is observed that lateral partial load affects the lateral ride index of carbody and longitudinal partial load mainly affects the vertical ride index. When flexible suspension frequency of equipments is close to carbody bend frequency, the minimum vibration of carbody occurs. But as suspension frequency of equipments is less than carbody bend frequency, rising damping can suppress the carbody vibration.

导出引用

吴会超;邬平波;吴娜;王忆佳;单永林. 车下设备悬挂参数与车体结构之间的匹配关系研究[J]. 振动与冲击, 2013, 32(3): 124-128

WU Huichao;WU Pingbo;WU Na;WANG Yijia;SHAN Yonglin. The Study of matching relations between equipment suspension parameters and carbody structure[J]. Journal of Vibration and Shock, 2013, 32(3): 124-128