液压外文翻译英文部分.docx
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液压外文翻译英文部分.docx
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液压外文翻译英文部分
FacilitiesAvailableinRunMode
1Introduction
Inrunmodeyoucan:
●Specifythecharacteristicsofsimulationruns.
●Initiatethesesimulationruns.
●Plotgraphsoftheresults.
●Specifylinearanalysistobeperformedatvarioustimes.
●Post-processthelinearanalysisresults.
●Post-processactivityindexresults.
●Startthedesignexplorationcontrolpanelandperformdesignexportstudies.
●Starttheexportparameterscontrolpanelandcreateexportfiles.
TherearealargenumberofspecialiconsinrunmodeasshowninFigure1
Figure1:
IconsavailableinRunmode
2Timedomainandlinearanalysismodes
Whenyouclickoncomponentorlinerun,AMESimbehavesdifferentlyifTimedomainmodeorLinearanalysismodeiscurrentlyselected.IfLinearanalysismodeisselectedagroupofspecialiconsaredisplayed.InTimedomainmodeyoucanplotgraphs.ThisactivityinvolvesAMESimreadingthereadingtheresultsfilesfromeitherastandardrunorabatchrun.InLinearanalysismodeyoucan:
●Setthecharacteristicsforlinearanalysestobedoneduringnextrun.
●Lookateigenvalues.
●DoBode,NyquistandNicholsplots.
●Examinemodalshapes.
●Doarootlocusplot.
ThisinvolvesAMESimreading.jac(Jacobian)files.Inbothmodesrunparameterscanbesetandrunsinitiated.
3Runningasimulation
Torunasimulation:
1.Ifnecessary,changetheSavestatusandLockedstatusofvariables.
2.
Ifnecessary,changethelinearanalysisstatusofvariables.
3.Settherunparameterstodefinethecharacteristicsoftherun.TodothisclickontheRunparametersbuttontopuoducetheRunParametersdialogbox.
4.
InitiatetherunbyclickingontheStartrunbutton.Whentherunstarts,aSimulationrundialogboxappears.
3.1SavestatusandSavenextstatusofvariables
IftheSavenextstatusofavariableistrue,duringthenextrun
itsvaluewillbeaddedtothe.resultsfile.TheSavenextstatusof
variablesdoesnotinanywayinfluencelinearanalysisresults.
TheSavenextstatusofvariablescanbechanged:
●Globallyforthecurrentlyseletedsub-system.
●Forallvariablesinasubmodel.
●Forindividualvariables.
Inthe.resultsfileavariableissavedornotaccordingtoitssavedstatuewhentherunwasinitiated.Thismaybedifferentfromitscurrentstatus.IfyouwanttochangethestatusofavariabletickthecorrespondingboxwithinTheSavenextcolumnbeforetherun.Thesavedvariableareinthe.resultsfileandyoucanplotthem.ThecolumnSavedshowsifavariablehasbeensavedornotandconsequentlyifitisplottable.
Globalchangeofsavenextstatus
1.Selectthepartofthesystemofinterestorselectthewholesystemusing
●Ctrl+Aor
●Edit→Selectall
2.CreatetherightbuttonmenuorusetheToolspulldownmenu.Ineithercaseselect.
●Saveallvariablesor
●Savenovariables.
Ifallyouwanttodoisaseriesoflinearanalyseswithabigsystem,itmaybeappropriatetodoarunwiththeSavenextstatusofallvariablesfalse.
SubmodelchangeofSavenextstatus
1.MakesureyouareinTimedomainmode.
2.ClickonacomponentorlineruntoproducetheVariablelistdialogbox.
3.ClickonSavealltoensurethatallvariablesinthatsubmodelwillbesavedduringnextrun.
4.ClickonSavenonetoensurethatnovariablesinthatsubmodelwillbesavedduringthenextrun.
IndividualvariablechangeofSavenextstatus
1.MakesureyouareinTimedomainmode
2.ClickonacomponentorlineruntoproducetheVariablelistdialogbox.
3.AlterthecheckboxstatusintheSavenextcolumn.Atickmeansthevariablewillbesavedduringthenextrun.
3.2Lockedstatusofstatevariables
Thefollowingvariables:
●Explicitstate
●Implicitstate
ButnotconstraintvariableshaveaLockedstatuswhichistrueorfalse.Thislockedstatusonlyinfluencestheresultsifthereisanysortofstabilizingrun.Ifoneofthesevariablesislocked,itsvalueisnotallowedtovaryduringastabilizingrun.Thelockedstatesfacilityisusefulforadvanceduserswhowishtoobtainapartialequilibriumfortheirsystem.TheLockedstatusofstatevariablescanbechanged:
●Globallyforthecurrentlyselectedsub-system.
●Forallstatevariablesinasubmodel.
●Forindividualstatevariables.
GlobalchangeofLockedstatus
1.Selectthepartofthesystemofinterestorselectthewholesystemusing
●Ctrl+Aor
●EdituSelectall.
2.Createtheright-buttonmenuorusetheToolsmenu.Ineithercaseselect:
●Unlockallstatesor
●Lockallstates.
SubmodelchangeofLockedstatus
1.MakesureyouareinTimedomainmode.
2.Right-clickonacomponentorlineruntoproducethepulldownmenu.
3.SelectLockstatestoproducetheLockedstatesstatusdialogbox.
4.ClickonUnlockAllorLockAllasappropriate.
ChangeofLockedstatusforindividualstatevariables
1.MakesureyouareinTimedomainmode.
2.Right-clickonacomponentorlineruntoproducethepulldownmenu.
3.SelectLockstatestoproducetheLockedstatesstatusdialogbox.
4.AlterthestateofthecheckbuttonsintheLockedcolumntochangetheLockedstatusofindividualstatevariables.
3.3Settingrunparameters
IfyouclickontheRunparametersbutton,yougettheRunParameters
dialogbox.Thisisusedtochangecharacteristicsofnextrun.Youcanchangenumericalvaluesandenableordisablevariouscheckandradiobuttons.Atthetopofthedialogbox3tabsgiveyouaccesstogroupsofparametersandoptionsyoucanchange,Whenyouhavemadethechangesyouwant,clickontheOKbuttontosavethem.IfyouclickonCancel,yourchangeswillbeignored.Wenowlookattheparametersandoptionsavailableunderthethreetabs
WiththeGeneraltabselectedyouhaveaccesstovaluesandoptionswhich
applytoboththestandardintegratorandfixedstepintegratorsasintheexampleshowninFigure.TheValuecolumniseditable.
Tochangeavalue:
1.Double-clickonit.
2.Typethenewvalueintheeditedbox.
Themeaningofthefirsttwoitemsinthelistisobvious.Ashortnoteonthethirditemandonthevariousoptionbuttonsisappropriate.
Communicationinterval
Duringtherundataisaddedtotheresultsfile.Thecommunicationintervalspecifieshowoftenthisisdone.Thesmallerthecommunicationintervalis,thelargerthe.resultsfileis.MostAMESimuserslikeabout1000pointsintheirresultfiles.
Hencetheformula:
ThecommunicationintervalandthestepsizeusedbytheAMESimintegratorarecompletelyindependent.IfyouenabletheDiscontinuityprintoutbutton,extravaluesareaddedto.resultsfileatthediscontinuitypoints.
Tolerance
TheAMESimstandardintegratorperformsintegrationinaseriesofdiscretesteps.Ateachstepaniterativeprocessisemployedandthisprocessmustconverge.Thusaftereachintegrationstepaconvergencetestisemployed.Whentheiterationsdoconverge,anerrortestisemployedtodetermineiftheresultsareaccurateenough.Ifeitherofthesetestsfails,thestepmustberepeatedwithasmallerstepsize.ThesetwotestsusethetolerancevaluedefinedinSimulationvalueslist.Anumberofimportantstatementsmustbemade:
●Thereisnopreciseconnectionbetweenthetoleranceandactualmaximumerrorintheresults.Themostgeneralthingwecansayisthatthesmallerthetoleranceis,themoreaccuratearetheresults.
●Normallyyoushouldnotusevalueslessthan1.0e-10butoccasionaltolerancesdownto1.0e-14work.
●Normallyyoushouldnotusevaluesgreaterthan1.0e-3.
Ifyouaregoingtotrusttheresults,itisverygoodpracticetoperformaseriesofrunswithasequenceoftolerances.Lookforconsistencybetweentheresults.Thedefaultvalueforthetoleranceis1.0e-5.Normallyifyouperformfurtherrunswith1.0e-6,1.0e-7,1.0e-8,1.0e-9,youwillnotnoticeanysignificantdifference.Ifyoudo,believetheresultsproducedwiththesmallertolerance.
AnextremelyusefulsubmodelisSIMP1whichisassociatedwiththeiconshown.Theiconcontainsa‘!
’andthismeansusewithcaution.
ThiscautionisnecessarybecauseparameterssetinSIMP1takeprecedenceoverthevaluesintheRunParametersdialogbox.Theparameterofinterestishighlightedbelow.
Ifyoursketchcontainsthisicon,youdraganddropthisparameterintoaBatchControlParametersSetupdialogbox,youcanorganizeabatchrunwiththetolerancevarying.Theparametersbelowgiveabatchrunwithtolerances1.0e-5,1.0e-6,1.0e-7,1.0e-8and1.0e-9.
Runtype
herearetworadiobuttons:
●Singlerun.
●Batch.
Mustbeselectedone.IfBatchisselected,theBatchoptionsbuttonissensitive.Clickonthisifyouwanttospecifyasubsetofbatchrunstooccur.DefinewhichrunstosuppressintheBatchRunSelectiondialogbox.
Miscellaneous
Thesecheckbuttonscanbeenabledordisabledinanycombination.
Statistics
WiththeStatisticsbuttonenabled,whentheruniscomplete,abriefsummaryofwhathappenedintherunisdisplayedintheSimulationrundialogbox:
NotethattheaccuracyoftheCPUtimedependsontheplatformyouareusing.OnatleastoneplatformCPUtimesareextremelyinaccurate.
Monitortime
MonitortimeisenabledbydefaultandaprogressbarappearsatthebottomoftheSimulationrundialogbox.Onsomeplatformscreatingthisbarslowsthesimulationdownsignificantlyonsimpleruns.
●ExperimentwithyourlocalAMESimrunningwiththebuttonenabledand
disabled.Ifthereisasignificantdifferenceyoumayprefertokeepitdisabled.
●Ifyouwanttodobenchmarktests,itisagoodideatodisableit.
Useoldfinalvalues
IftheUseoldfinalvaluesbuttonisenabled,AMESimtriestoextractthefinalvaluesfromthe
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