Variable stiffness and damping performance of a magnetorheological isolator
LI Maoyu
HU Guoliang
YU Lifan
ZHANG Jie
Abstract：[Objective]Traditional vibration isolators with fixed parameters fail to meet varying vibration requirements.To address this,a magnetorheological isolator with independently adjustable stiffness and damping was designed to enhance isolation performance.[Methods]Firstly,the magnetic circuit and mechanical structure were configured.Mathematical models for damping force and electromagnetic stiffness were established.Then,electromagnetic field and magnetorheological coupling simulations were performed using COMSOL software to analyze internal magnetic distribution and parameter variations under external excitations.[Results]Simulation results demonstrate that within a current range of 0-2 A,the electromagnetic spring force varies from 0 to 387 N,and the maximum damping force reaches 1 500 N.The equivalent stiffness and damping are adjustable within ranges of 124-450 N/mm and 7.7-79.8 N·s/mm,respectively,providing robust multi-modal vibration control.
Keywords：Magnetorheological isolatorVariable stiffnessVariable dampingEquivalent stiffnessEquivalent dampingAdjustable range
Publication Date：2026-05-31
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：8( 126-133 )