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页数:19页
时间:2019-03-20
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1、QuickStartGuideSeamWeldAnalysisProblemDescriptionThissimpleexampleisusedtodemonstratetheuseofSeamWeldAnalysisinMSC.Fatigue.The.op2fileforthepartisincludedinthedeliveryforuserstofamiliarizethemselveswiththeMAGWeldanalysismodule.WeldelementsThetubesareweldedasshownandapointloadof394Nisappliedass
2、hown.Theplatethicknessis1.5mm.LoadingtheModelinPatran:StartPatranorthestandaloneversionofMSC.FatigueandselectFile
3、New.Enteranewjobnameasseamw1.dbasshowninFigure1.Figure1OntheModelPreferencesformselectadefaultNastran
4、StructuralrunasshowninFigure2.Figure2NowloadthedatafilebyselectingtheAnalysiso
5、ptionfromthemenubar.TheAnalysisformisshowninFigure3.FromtheAnalysisformselectthefollowingproperties:·Action=ReadOutput2·Object=Both·Method=TranslateFigure3ClickSelectResultsFileandselecttheOP2file,seamw.op2.Itmustbenotedthatthis.op2filecontainstheresultsfromaNASTRANrunusingthestress(cubic)case
6、controlcommandandPARAM,SNORM,45.Thesearerequiredtoextractcorrectnodalresultsatallnodes.ClickApplyandwaitforthemodeltoload.CreatingaWeldgroup:Inordertocarryoutthefatigueanalysisoftheweldweneedtocreatetwogroups,onecontainingtheweldelementsandtheothercontainingtheplateelements.Todemonstratetheuni
7、quegroupextractioncapabilityofthismodule,wewillonlycreatetheweldgroupandusethedefaultgroupfortheplategroup.First,let’screateagroupcontainingtheweldelements.FromthemainmenuselectGroup
8、Createandfillintheformasbelow:·NewGroupName=weld·GroupContents=AddEntitySelection·EntitySelection=el1078:1105Cl
9、ickonApplytodefinethegroup,thegroupshouldbehighlightedintheplot.Figure4ViewingtheStressResults:SelectResultsfromthetoolbar.ChooseyourresultstoviewandclickApplytoseetheresultsfromthe.op2file.TheMaximumPrincipalstressesareshowninFigure5.Figure5SettingUptheFatigueAnalysis:Tosetupafatiguerunselect
10、Tools
11、FATIGUE,fromthemainmenu.Addthefollowingpropertiestotheform:·Analysis=MAG_Weld·Jobname=seamw1TheformisshowninFigure6.Figure6Notethatresultslocation,nodalaveragingandFEresultsaregrayedout.Theresultslocationsareatnodes,averagingisper
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