基于准零刚度理论的悬挂式单轨车辆二系悬挂系统研究

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Abstract Secondary suspension system is one of the important parts to ensure the safe and stable operation of a suspended monorail vehicle.Based on the the quasi-zero-stiffness(QZS) and multi-body dynamics theory,a vertical model of the suspended monorail vehicle with a secondary suspension system holding QZS characteristic was established and the vertical vibration equations were deduced.Then the vibration isolation characteristics of the secondary suspension systems with QZS and traditional linear stiffness characteristics were further studied comparatively by adopting the dynamic model.The following conclusions are drawn that the QZS of the secondary suspension system for the suspended monorail vehicle can be realized by using a parallel oblique spring with vertical elastic elements.The vertical dynamic responses of the vehicle with QZS system are obviously lower than those with the traditional linear stiffness system,and the low frequency vibration isolation performance is satisfactory.

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Key words： suspended monorail vehicle secondary suspension system quasi-zero-stiffness vibration isolation characteristic

Received: 05 July 2017 Published: 15 January 2019

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	Articles by authors
	CHEN Zhihui1
	2
	ZHAI Wanming1
	ZHU Shengyang1
	LV Kaikai1

Cite this article:

CHEN Zhihui1,2,ZHAI Wanming1, et al. Performance study on the secondary suspension system of a suspended monorail vehicle based on the quasi-zero-stiffness theory[J]. JOURNAL OF VIBRATION AND SHOCK, 2019, 38(2): 13-17.

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http://jvs.sjtu.edu.cn/EN/ OR http://jvs.sjtu.edu.cn/EN/Y2019/V38/I2/13

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