Critical magnetic field analysis of porous foam magnetorheological (MR) fluid damper

摘要

Inthispaper,anewporousfoammagntrorheological(MR)fluiddamperisproposed.Intheactionofmagneticfield,themetalfoamisusedtostoreandreleasetheMRfluids.ItisworthytostudythetimeMRfluidscanbeextractedandproducedampingforce.Therefore,thecriticalmagneticfieldintensityisinvestigatedexperimentallybyacustom-madetestrig.Theexperimentalresultsshowthatwhenmagneticfieldintensityincreasedtoacriticalvalue,theMRfluidsareextractedoutfromtheporousfoamintosheargap,andmovewiththepiston,thesheardampingforcebegintochange.nbsp;