资源描述
ANSYS-Solution,Solution-AnalysisType,ANSYS-Solution,Solution-AnalysisType,ANTYPE,Antype,Status,LDSTEP,SUBSTEP,ActionSpecifiestheanalysistypeandrestartstatus.AntypeAnalysistype(defaultstothepreviouslyspecifiedanalysistype,ortoSTATICifnonespecified):STATICor0-Performastaticanalysis.Validforalldegreesoffreedom.BUCKLEor1-Performabucklinganalysis.ImpliesthatapreviousstaticsolutionwasperformedwithprestresseffectscalculatedPSTRES,ON.Validforstructuraldegreesoffreedomonly.MODALor2-Performamodalanalysis.Validforstructuralandfluiddegreesoffreedom.HARMICor3-Performaharmonicanalysis.Validforstructural,fluid,magnetic,andelectricaldegreesoffreedom.TRANSor4-Performatransientanalysis.Validforalldegreesoffreedom.SUBSTRor7-Performasubstructureanalysis.Validforalldegreesoffreedom.SPECTRor8-Performaspectrumanalysis.Impliesthatapreviousmodalanalysiswasperformed.Validforstructuraldegreesoffreedomonly.,ANSYS-Solution,Solution-SolnControls,ANSYS-Solution,Solution-SolnControls,NLGEOM,KeyIncludeslarge-deflectioneffectsinastaticorfulltransientanalysis.KeyLarge-deflectionkey:OFF-Large-deflectioneffectsareignored,i.e.,small-deflectionanalysis(default).ON-Large-deflectioneffectsaretobeincluded(largedeflection,largerotation,and/orlargestrain,dependingontheelementtype).CommandDefaultLarge-deflectioneffectsareignored,ANSYS-Solution,Solution-SolnControls,NSUBST,NSBSTP,NSBMX,NSBMN,CarrySpecifiesthenumberofsubstepstobetakenthisloadstep.AUTOTS,KeySpecifieswhethertouseautomatictimesteppingorloadstepping.KeyAutomatictimesteppingkey:OFF-Donotuseautomatictimestepping.ON-Useautomatictimestepping.,ANSYS-Solution,Solution-SolnControls,TIME,TIMESetsthetimeforaloadstep.TIMETimeattheendoftheloadstep.CommandDefaultPreviousTIME+1.0(ateachloadstep),i.e.,alsocorrespondstotheloadstepnumber.,ANSYS-Solution,Solution-SolnControls,EQSLV,Lab,TOLER,MULTSpecifiesthetypeofequationsolver.LabEquationsolvertype(12):FRONT,SPARSE,JCG,JCGOUT,ICCG,PCG,PCGOUT,AMG,ITER,DDS,DPCG,DJCGCommandDefaultThesparsedirectsolveristhedefaultsolverforallanalyses,exceptforelectromagneticanalyseswithCIRCU124elementspresent,analysesthatincludebothp-elementsandconstraintequations,spectrumanalyses,andsubstructuringanalyses(whicheachusethefrontaldirectsolverbydefault).,ANSYS-Solution,Solution-SolnControls,SPARSE-Sparsedirectequationsolver.Applicabletorealsymmetricandunsymmetricmatrices.AvailableonlyforSTATIC,HARMIC(fullmethodonly),TRANS(fullmethodonly),SUBSTR,andPSDspectrumanalysistypesANTYPE.Canbeusedfornonlinearandlinearanalyses,especiallynonlinearanalysiswhereindefinitematricesarefrequentlyencountered.Wellsuitedforcontactanalysiswherecontactstatusaltersthemeshtopology.Othertypicalwell-suitedapplicationsare:(a)modelsconsistingofshell/beamorshell/beamandsolidelements(b)modelswithamulti-branchstructure,suchasanautomobileexhaustoraturbinefan.Thisisanalternativetoiterativesolverssinceitcombinesbothspeedandrobustness.Generally,itrequiresmorememorythanthefrontalsolver,butitiscomparableinmemoryrequirementtothePCGsolver.Whenmemoryislimited,thesolverworkspartlyinandout-of-corememorywithoutmuchincreaseinCPUtime.,ANSYS-Solution,Solution-SolnControls,LNSRCH,KeyActivatesalinesearchtobeusedwithNewton-Raphson.KeyLinesearchkey:OFF-Donotusealinesearch.ON-Usealinesearch.Note,adaptivedescentissuppressedwhenLNSRCHisonunlessexplicitlyrequestedontheNROPTcommand.Havinglinesearchonandadaptivedescentonatthesametimeisnotrecommended.AUTO-ANSYSautomaticallyswitcheslinesearchingONandOFFbetweensubstepsofaloadstepasneeded.Thisoptionisrecommended.CommandDefaultLinesearchoff,unlesscontactelementsarepresent.,ANSYS-Solution,Solution-SolnControls,CNVTOL,Lab,VALUE,TOLER,NORM,MINREFSetsconvergencevaluesfornonlinearanalyses.LabValidconvergencelabelsareasfollows:IfSTAT,listthestatusofthecurrentlyspecifiedcriteria.Structurallabels:U(displacements);ROT(rotations);F(forces);M(moments).Thermallabels:TEMP(temperature);HEAT(heatflow).Fluidlabels:PRES(pressures);V(velocities);FLOW(fluidflow);VF(fluidforce).Electriclabels:VOLT(voltage);EMF(electromotiveforce);CURR(currentflow);AMPS(currentflow);CURT(currentflow).Magneticlabels:MAG(scalarmagneticpotential);A(vectormagneticpotentials);CURR(currentflow);FLUX(scalarmagneticflux);CSG(magneticcurrentsegments);VLTG(voltagedrop).,ANSYS-Solution,Solution-SolnControls,CNVTOL,Lab,VALUE,TOLER,NORM,MINREFSetsconvergencevaluesfornonlinearanalyses.VALUETypicalvaluefortheabovelabelforthisanalysis.Ifnegative,andifthisconvergencelabelwaspreviouslyspecifiedexplicitly,thenconvergencebasedonthislabelisremoved.(AnegativeVALUEwillnotremoveadefaultconvergencelabel.)DefaultstothemaximumofaprogramcalculatedreferenceorMINREF.Fordegreesoffreedom,thereferenceisbasedupontheselectedNORMandthecurrenttotalDOFvalue.Forforcingquantities,thereferenceisbasedupontheselectedNORMandtheappliedloads.,ANSYS-Solution,Solution-SolnControls,CNVTOL,Lab,VALUE,TOLER,NORM,MINREFSetsconvergencevaluesfornonlinearanalyses.TOLERWhenSOLCONTROL,ON,toleranceaboutVALUE.Defaultsto0.005(0.5%)forforceandmoment,and0.05(5%)fordisplacementwhenrotationalDOFsarenotpresent.WhenSOLCONTROL,OFF,defaultsto0.001(0.1%)forforceandmoment.NORMSpecifiesnormselection:2-L2norm(checkSRSSvalue)(default).1-L1norm(checkabsolutevaluesum).0-Infinitenorm(checkeachDOFseparately).,ANSYS-Solution,Solution-SolnControls,CNVTOL,Lab,VALUE,TOLER,NORM,MINREFSetsconvergencevaluesfornonlinearanalyses.MINREFTheminimumvalueallowedfortheprogramcalculatedreferencevalue.Ifnegative,nominimumisenforced.UsedonlyifVALUEisblank.Defaultsto0.01forforceandmomentconvergence,1.0E-6forheatflow,1.0E-12forVOLTandAMPS,and0.0otherwise.WhenSOLCONTROL,OFF,defaultsto1.0forforceandmomentconvergence.Thedefaultforheatflow(1.0E-6),VOLTandAMPS(1.0E-12),andothersareindependentoftheSOLCONTROLsetting.CommandDefaultForstaticortransientanalysis,checktheout-of-balanceloadforanyactiveDOFusingthedefaultVALUE,TOLER,NORM,andMINREF.Alsocheckthedisplacementconvergenceforsomeproblems.Forharmonicmagneticanalysis,checktheout-of-balanceofthedegreesoffreedom.,ANSYS-Solution,Solution-DefineLoads-Displacement,DK,KPOI,Lab,VALUE,VALUE2,KEXPND,Lab2,Lab3,Lab4,Lab5,Lab6DefinesDOFconstraintsatkeypoints.DL,LINE,AREA,Lab,Value1,Value2DefinesDOFconstraintsonlines.DA,AREA,Lab,Value1,Value2DefinesDOFconstraintsonareas.D,NODE,Lab,VALUE,VALUE2,NEND,NINC,Lab2,Lab3,Lab4,Lab5,Lab6DefinesDOFconstraintsatnodes.,ANSYS-Solution,Solution-DefineLoads-Displacement,LabSYMM-Generatesymmetryconstraintsfornon-FLOTRANmodels.ASYM-Generateantisymmetryconstraintsfornon-FLOTRANmodels.UX-DisplacementinXdirection.UY-DisplacementinYdirection.UZ-DisplacementinZdirection.ROTX-RotationaboutXaxis.ROTY-RotationaboutYaxis.ROTZ-RotationaboutZaxis.,ANSYS-Solution,Solution-DefineLoads-Pressure,SFL,LINE,Lab,VALI,VALJ,VAL2I,VAL2JSpecifiessurfaceloadsonlinesofanarea.SFA,AREA,LKEY,Lab,VALUE,VALUE2Specifiessurfaceloadsontheselectedareas.SF,Nlist,Lab,VALUE,VALUE2Specifiessurfaceloadsonnodes.SFBEAM,ELEM,LKEY,Lab,VALI,VALJ,VAL2I,VAL2J,IOFFST,JOFFSTSpecifiessurfaceloadsonbeamelements.,ANSYS-Solution,Solution-DefineLoads-Pressure,SOLVEStartsasolution.NotesStartsthesolutionofoneloadstepofasolutionsequencebasedonthecurrentanalysistypeandoptionsettings.,ANSYS-Solution,Solution-DefineLoads-Pressure,LSSOLVE,LSMIN,LSMAX,LSINCReadsandsolvesmultipleloadsteps.LSMIN,LSMAX,LSINCRangeofloadstepfilestobereadandsolved,fromLSMINtoLSMAXinstepsofLSINC.LSMAXdefaultstoLSMIN,andLSINCdefaultsto1.IfLSMINisblank,abriefcommanddescriptionisdisplayed.TheloadstepfilesareassumedtobenamedJobname.Sn,wherenisanumberassignedbytheLSWRITEcommand(01-09,10,11,etc.).Onsystemswitha3-characterlimitontheextension,the“S”isdroppedfornumbers99.NotesLSSOLVEinvokesanANSYSmacrotoreadandsolvemultipleloadsteps.ThemacroloopsthroughaseriesofloadstepfileswrittenbytheLSWRITEcommand.ThemacrofilecalledbyLSSOLVEiscalledLSSOLVE.MAC.LSSOLVEcannotbeusedwiththebirth-deathoption.LSSOLVEdoesnotsupportrestarts.LSSOLVEdoesnotapplytoFLOTRAN.,
展开阅读全文