Variable stiffness and damping magnetorheological isolator

doi:10.1007/s11465-009-0039-4

Front Mech Eng Chin

2009, Vol. 4

Issue (3) : 310-315 https://doi.org/10.1007/s11465-009-0039-4

RESEARCH ARTICLE

Variable stiffness and damping magnetorheological isolator

Yang ZHOU, Xingyu WANG, Xianzhou ZHANG, Weihua LI(

)

School of Mechanical, Materials & Mechatronic Engineering, University of Wollongong, Wollongong NSW 2522, Australia

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Abstract

This paper presents the development and characterization of a magnetorheological (MR) fluid-based variable stiffness and damping isolator. The prototype of the MR fluid isolator is fabricated, and its dynamic behavior is measured under various applied magnetic fields. The parameters of the model under various magnetic fields are identified, and the dynamic performance of the isolator is evaluated in simulation. Experimental results indicate that both the stiffness and damping capability of the developed MR isolator can be controlled by an external magnetic field.

Keywords magnetorheological (MR) fluid stiffness damping mathematical model dynamic performance parameter identification

Corresponding Author(s): LI Weihua,Email:weihuali@uow.edu.au

Issue Date: 05 September 2009

Cite this article:

Yang ZHOU,Xingyu WANG,Xianzhou ZHANG, et al. Variable stiffness and damping magnetorheological isolator[J]. Front Mech Eng Chin, 2009, 4(3): 310-315.

URL:

https://academic.hep.com.cn/fme/EN/10.1007/s11465-009-0039-4
https://academic.hep.com.cn/fme/EN/Y2009/V4/I3/310

Fig.1 Schematic of MR fluid isolator

Fig.2 (a) Lumped model of MR isolator; (b) model simplification

Fig.3 Schematic of MR valve

Fig.4 Experiment setup

Fig.5 Damping force versus displacement at various field strengths (coil currents)

Tab.1 Identified equivalent stiffness and damping coefficient

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