动平衡标准-iso 1940 1-2003 e

hevibrationofthejournalsand/orforcesatthebearingsatafrequencycorrespondingtoservicespeedarewithinspecifiedlimits.Rotorunbalancecanbecausedbydesign,material,manufacturingandassembly.Everyrotorhasanindividualunbalancedistributionalongitslength,eveninaseriesproduction.4.2RepresentationoftheunbalanceOneandthesameunbalanceofarotorinaconstant(rigid)statecanberepresentedbyvectorialquantitiesinvariousways,asshowninFigures1a)to1f).Figures1a)to1c)showdifferentrepresentationsintermsofresultantunbalanceandresultantcoupleunbalance,whereasFigures1d)to1f)areintermsofadynamicunbalanceintwoplanes.NOTE1Theresultantunbalancevectormaybelocatedinanyradialplane(withoutchangingamountandangle);buttheassociatedresultantcoupleunbalanceisdependentonthelocationoftheresultantunbalancevector.4©ISO2003—Allrightsreserved