教程分析介绍12 operational deflection shapes

TutorialCategory:.LabStructuresTrainingTopic:OperationalDeflectionThistutorialwillexinhowyoucanworkwiththe.LabOperationalDeflectionShapesandTimeAnimationmodule.Dis .Lab.LabOperationalDeflectionAprojectcontainingmeasureddataandgeometryfromthebrakeGettingOpenthe.LabOperationDeflectionShapesandTimeAnimationOpentheprojectyouhavemeasuredwithmodalInthiscoursewewillanimatethediscinthefrequencyandcalculatetheOperationDeflectionShapes(ODS).IntheNavigatorworksheet,let’screateadisylayoutwithageometrydisyonthetop,andafrontbackdisyonthebottom.SavetheLayoutbyenteringanameandpressingthe‘Savelayout”AddtoyourFavoritesbyhighlightingthelayoutandpressing“AddtoOntheNavigatorworksheet,choosetheODSlayoutbyclickingon“CreateaDragtheGeometryontotheupperdis y.Clickonthesection2_shaker_testanddroptheFRtothelowerdis InInaprojectwithalotofrunsitcanbecumbersometobrowseintoeachoftheruns,agoodshortcutistousethe“ListAllBlocksbutton”.Thiswillshowalltheblocksintheprojectwithoutyouhavingtobrowsetothem.HighlighttheProjectintheNavigatortreeandpresstheListAllBlocksbutton.AnotheroptionistosearchfortheNowthatweknowwhat’sintheproject,let’sanimatethediscandcalculatetheOperatingDeflectionTheAnimationDisGototheAnimationOntheleftsideofthescreenisatableoftheavailabledata.Thecolumnsindicatethereferencechannels.Therowsindicatetheresponsechannels.ByclickingonthefieldsofthetablethatFRFisNowpressonthefields.YoucanusethecontrolandshiftkeystoselectmultipleFRF’s.Theirsumisalsodisyed.ThenodesarehighlightedintheGeometryToscrollthroughthedisyedFRFandseetheanimation,presstheStartTheStopbuttonstopstheanimation.ThePausebuttonpausesatonefrequency.Whenpaused,thecursorcanbemovedtoanotherfrequency.Thefrequencyrangecsobespecifiedusingsingleordoublecursors.Thisscrolledanimationcanbedoneonanyfrequencydataprovidedageometryisavailablethatcorrespondsthemeasurements(ThePointID’sneedtobenamedthesameasthegeometryNowlet’scalculatetheOperatingDeflectionShapes:sele inglecursor,putitonthedifferentpeaksandpresstheAddSinglebuttona inedhere.WhileviewinganFRFintheupperwindow,youcanaddasingleXcursorbypressingthe‘AddSingle’button.Youcanthenmovethiscursoraroundandpicksomefrequencies.Everytimeyouhitthe‘AddSingle’button,itaddsanewfrequencytohavetheODScalculatedat.Moreinformationisavailablewiththe‘More’button.Afteryouselectafewpeaks,pressthe‘Calculate’button.YouYou sousethecursoroptionstofindtheAftertheOperatingDeflectionShapesarecalculated,theycanbeviewedintheNavigatorWorkGototheNavigatorworksheetanddraganddroptheGeometryintoageometryThenopenyourODSProcessingSectiontoseeyourODSModeSetanddragthemalsointotheDisy.WhenWhenadoublecursorisselectedandyoupress‘AddSingle’,youcancalculatethis.Thecalculationismoresophisticatedthentheanimationyoucanseeintheanimationworksheet.Thecalculationworksasfollows:inthebandselectedbythedoublecursorthe umamplitudeofeachblockissearched.The umofthecrosspowerenvelopeisalsosearched.ThefrequencyofthisumisthecalculatedfrequencywhenyoucheckthedetailpropertiesofthecalculatedmodeinODSprocessinginthenavigator(rightclick).Inthegeometry yyoucanseeamplitudeofeverypointintheselectedfrequencybandanimated.Theamplitudesmayaldifferentfrequenciesthentheenvelope.Thisiswhyyoucan’tseethesameanimationinthenavigatorandtheanimationworksheet.Saveyourproject,yourODSisno