WS11.4_Ansoft_Maxwell_Simplorer_LinearMotion

WorkshopSupplementWS11.4-1ANSYS,Inc.Proprietary©2008ANSYS,Inc.Allrightsreserved.August26,2008Inventory#002555Workshop11.4•Workshop11.4Maxwell3DtoSimplorerCoupling:ALinearMotionExampleWorkshopSupplementWS11.4-2ANSYS,Inc.Proprietary©2008ANSYS,Inc.Allrightsreserved.August26,2008Inventory#002555Workshop11.4Maxwell3DtoSimplorerCoupling•Overview:ThisexerciseusestheMaxwell3DMagnetostaticsolverwithOptimetricstocreateanequivalentcircuitmodel.ThismodelisimportedintotheSimplorersystemsimulator.–Alinearactuatorwithamovingarmatureandacoilismodeled.–Thepositionofthearmatureandtheampere-turnsofthecoilaretheindependentvariables.–Thefluxlinkageandforceresultsfromthemagnetostaticsimulationareexportedtoanetlist.–Finally,thenetlistisimportedintoaSimplorerschematicinordertosolveacoupledelectricalandmechanicalsystem.coilyokearmatureWorkshopSupplementWS11.4-3ANSYS,Inc.Proprietary©2008ANSYS,Inc.Allrightsreserved.August26,2008Inventory#002555Workshop11.4Maxwell3DtoSimplorerCoupling•Step1–Setupthemodel–Note:Afullyset-up,solvedprojectisavailablebyopeningfile:c:\Hands-on\Ansoft\Maxwell_Simplorer\LinearMotion_SOLVED.mxwl–ToaccessMaxwell,clicktheMicrosoftStartbutton,selectPrograms,selectAnsoft,selectMaxwell12,andthenMaxwell12.–ClickonthemenuitemProjectInsertMaxwell3DDesign–ClickonthemenuitemMaxwell3DSolutionTypeMagnetostatic–SelectthemenuitemModelerUnitsSelectunits:in(inches)–ImportthegeometryusingModelerImportc:\Hands-on\Ansoft\Maxwell_Simplorer\actuator.sat–CreatethesolutionregionusingDrawRegion•PaddingData:PadAllDirections•PaddingPercentage:100–ResettheviewtozoomoutusingViewFitAllActiveView–DeselectallobjectsusingEditDeselectAllWorkshopSupplementWS11.4-4ANSYS,Inc.Proprietary©2008ANSYS,Inc.Allrightsreserved.August26,2008Inventory#002555Workshop11.4Maxwell3DtoSimplorerCoupling•Step2–Movethearmature–SelecttheArmatureandmenuitemEditArrangeMove•PressF4toenterdialogdataentrymode.•MoveVector:0in,0in,Gap•AfterclickingonOK,anAddVariablewindowwillappear:–Value:0.001in(don’tforgettheunits)WorkshopSupplementWS11.4-5ANSYS,Inc.Proprietary©2008ANSYS,Inc.Allrightsreserved.August26,2008Inventory#002555Workshop11.4Maxwell3DtoSimplorerCoupling•Step3–Assignthematerials–SelecttheobjectsoneatatimeinthehistorytreeandthenclickontheAssignMaterialbuttononthetoolbar–Assignthefollowingmaterials:•Armature:Steel_1010•Coil:Copper•Yoke:Steel_1010•Step4–Assigntheexcitation–SelecttheterminalsheetobjectinthehistorytreeandthenselectmenuitemMaxwell3DExcitationsAssignCurrent•Name:Current•Value:amp_turns•Type:Stranded(thiscausesthecurrentdensitytobeevenlydistributedinthecross-sectionofthecoil.)–AfterclickingonOK,anAddVariablewindowwillappear:•Value:576A(thisvaluerepresentsthetotalampere-turns)WorkshopSupplementWS11.4-6ANSYS,Inc.Proprietary©2008ANSYS,Inc.Allrightsreserved.August26,2008Inventory#002555Workshop11.4Maxwell3DtoSimplorerCoupling•Step5-AssigntheBoundaries–SincetheCoilandtheYokeareconductingmaterialsthattouch,aninsulatingboundarymustbeappliedtopreventthecurrentfromflowingfromtheCoilintotheYoke.–SelecttheCoilandmenuitemMaxwell3DBoundariesAssignInsulating•Name:Coil_Insulate–Nootherboundariesneedtobeassigned•Step6-AssignParametersforForceandInductance–SelecttheArmatureandmenuitemMaxwell3DParametersAssignForce•Name:Force1(keepthedefaultname)•Type:Virtual•OnPostProcessingtab,ReferenceCS:Global–SelecttheCoilandmenuitemMaxwell3DParametersAssignMatrix•Name:Matrix1(keepthedefaultname)•Current:Include:CoilWorkshopSupplementWS11.4-7ANSYS,Inc.Proprietary©2008ANSYS,Inc.Allrightsreserved.August26,2008Inventory#002555Workshop11.4Maxwell3DtoSimplorerCoupling•Step7–Assignmeshoperations–Inordertoensureauniformmeshinthemagneticobjects,meshoperationscanbeadded–SelecttheArmatureandmenuitemMaxwell3DMeshOperationsAssignInsideSelectionLengthBased•Name:Armature_Inside•RestrictLengthofElements:Deselect•RestricttheNumberofElements:Check•MaximumNumberofElements:5000–SelecttheYokeandmenuitemMaxwell3DMeshOperationsAssignInsideSelectionLengthBased•Name:Yoke_Inside•RestrictLengthofElements:Deselect•RestricttheNumberofElements:Check•MaximumNumberofElements:5000WorkshopSupplementWS11.4-8ANSYS,Inc.Proprietary©2008ANSYS,Inc.Allrightsreserved.August26,2008Inventory#002555Workshop11.4Maxwell3DtoSimplorerCoupling•Step8–CreateanAnalysisSetup–Beforeperformingaparametricstudy,solvethenominalproblemfirsttoverifythattheproblemiscorrectlysetup.–SelectthemenuitemMaxwell3DAnalysisSetupAddSolutionSetup.•GeneralTab:–PercentError:3%•ConvergenceTab:–RefinementPerPass:15%–MinimumNumberofPasses:1•SolverTab:–NonlinearResidual:0.005•Keepallothersettingstotheirdefaultvalue–SavetheprojectbyclickingonmenuitemFileSaveAs–SelectthemenuitemMaxwell3DValidationChecktoverifyproblemsetupWorkshopSupplementWS11.4-9ANSYS,Inc.Proprietary©2008ANSYS,Inc.Allrightsreserved.August26,2008Inventory#002555Workshop11.4Maxwell3DtoSimplorerCoupling•Step9–AnalyzetheDesignandPostProcess–SelectthemenuitemMaxwell3DAnalyzeAll–SelectthemenuitemMaxwell3DResultsSolutionData.•Convergence:Numberofpasses:6,Tota