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1、Workshop8.1MultistepAnalysis15.0ReleaseIntroductiontoANSYSMechanical1©2014ANSYS,Inc.February12,2014Release15.0GoalsThegoalofthisworkshopistoperforma4stepanalysisonthepipeclampshownhere:•TheboltwillreceiveapretensionboltloadinLS1(lockedatLS2andforLS3and4).•Thepipewillreceive
2、aninternalpressureduringLS3.•ThepipewillreceiveanaxialforceloadduringLS4.2©2014ANSYS,Inc.February12,2014Release15.0ProjectSchematicBeginanewWorkbenchsessionand,fromtheProjectpage,choose“RestoreArchive...“andbrowsetothefile“Pipe_Clamp.wbpz”andOpen(locationprovidedbyinstructo
3、r).Whenprompted,“Save”usingthedefaultnameandthesamelocation.Fromthe“Units”menuverify:•Projectunitsaresetto“Metric(kg,mm,s,ºC,mA,N,mV).•“DisplayValuesinProjectUnits”ischecked(on).3©2014ANSYS,Inc.February12,2014Release15.0...ProjectSchematic1.FromtheStaticStructuralsystemdoub
4、leclick(orRMB>Edit)the“Model”cell.1.2.WhenMechanicalopens,verifytheunitsaresetto“Metric(mm,kg,s,mV,mA)”.2.4©2014ANSYS,Inc.February12,2014Release15.0PreprocessingBeforewebeginpreprocessinglet’sinspectthemodelasitiscurrentlysetup.3.ExpandtheConnectionsandContactbranchesto3.vi
5、ewthecontacts.–Browsethe4contactpairs.Theyappeartobescopedcorrectlybutallbehavioriscurrentlybondedwhichwewillchange(seebelow).Contactbelowtheboltheadandbetweentheupperboltandhole:assumednoseparation.ContactbetweentheContactinthreadedclampandpipe:area:assumedbonded.assumedbo
6、nded.5©2014ANSYS,Inc.February12,2014Release15.0...Preprocessing4.Highlightthe1stand3rdcontactregions.4.5.Inthedetailschangethe“Type”to“NoSeparation”.Ourassumptionofnoseparationcontactmeanssomeslidingcanoccurinthoselocations.5.Note,thecontactbetweentheclampandthepipewouldnor
7、mallybefrictionlessinanapplicationlikethis.Howeverintheinterestoftimewewishtoavoiddoinganonlinearanalysisandonly6.demonstratemulti-stepsolutions.Thusbondedcontactisretained.6.Togglethe“ShowMesh”icontodisplaythemesh.–Noticeabodysizecontrolhasbeenaddedtothebodies.Asdocumented
8、,itisrecommendedthatamorerefinedmeshbeusedwithboltpretension.6©2014ANSYS,Inc.Febru
