材料参数对液弹阻尼器动态特性的影响

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Abstract In order to investigate the influence law of material performance parameters on the dynamic characteristics of the fluid-elastomeric damper, the variation of load-displacement curve, elastic stiffness, damping stiffness and loss factor of the fluid-elastomeric damper with the difference of rubber hardness and damping fluid viscosity were studied by electro-hydraulic servo dynamic testing machine. The test results showed that more than 91.5% of the elastic stiffness of the fluid-elastomeric damper is provided by the rubber part, and the elastic stiffness increases with the increase of rubber hardness. More than 84.8% of the damping stiffness of the fluid-elastomeric damper is provided by the damping fluid, and the damping stiffness and loss factor increase with the increase of the viscosity of the damping fluid and decrease with the increase of the shear amplitude. The greater the viscosity of the damping fluid, the greater the decrease of the damping stiffness and loss factor. When the viscosity of damping fluid increases from 2000 mm2/s to 10000 mm2/s, the damping stiffness of the fluid-elastomeric damper increases from 2420 N/mm to 5163 N/mm. when the shear amplitude increases from 0.2 mm to 1.5 mm, the damping stiffness decreases by 18.5% and 40.1%, respectively. The above conclusions can provide a basis for the selection of materials for fluid-elastomeric damper.

Key words： fluid-elastomeric damper load displacement curve elastic stiffness damping stiffness loss factor

Received: 28 November 2022 Published: 15 February 2024

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	Articles by authors
	FENG Linzhao1
	2
	KANG Lixia3
	LAI Liangqing1
	2
	CHEN Gaosheng1
	2
	ZHAO Xiaojian1
	2
	SU Zhengtao2
	LIU Jia1
	2

Cite this article:

FENG Linzhao1,2,KANG Lixia3, et al. Effects of material parameters on dynamic characteristics of fluid-elastomeric damper[J]. JOURNAL OF VIBRATION AND SHOCK, 2024, 43(3): 1-6.

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http://jvs.sjtu.edu.cn/EN/ OR http://jvs.sjtu.edu.cn/EN/Y2024/V43/I3/1

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