有限元分析系统的发展现状与展望外文翻译演示教学Word文件下载.docx

有限元分析系统的发展现状与展望外文翻译演示教学Word文件下载.docx

《有限元分析系统的发展现状与展望外文翻译演示教学Word文件下载.docx》由会员分享，可在线阅读，更多相关《有限元分析系统的发展现状与展望外文翻译演示教学Word文件下载.docx（9页珍藏版）》请在冰豆网上搜索。

Alongwithmodernscienceandtechnologydevelopment,thepeopleunceasinglyaremakingthefastertransportationvehicle,thelarge-scalebuilding,thegreaterspanbridge,thehighefficiencypowersetandtheprecisermechanicaldevice.Alltheserequestengineertobeablepreciselytoforecastinthedesignstagetheproductandtheprojecttechnicalperformance,needstobestatic,technicalparameterandsoondynamicstrengthtothestructureaswellastemperaturefield,flowfield,electromagneticfieldandtransfusioncarriesontheanalysiscomputation.Forexampleanalysiscomputationhigh-riseconstructionandgreatspanbridgewhenearthquakereceivestheinfluence,hasalookwhethercanhavethedestructiveaccident;

Theanalysiscalculatesthenuclearreactorthetemperaturefield,thedeterminationheattransferandthecoolingsystemarewhetherreasonable;

Analyzesinthenewleafbladethehydrodynamicsparameter,enhancesitsoperatingefficiency.Thesellmaysumupasthesolutionphysicsquestioncontrolpartialdifferentialequationsoftenisnotimpossible.

Inrecentyearsthefiniteelementanalysiswhichdevelopsinthecomputertechnologyandunderthenumericalanalysismethodsupport（FEA,FiniteElementAnalysis）thesideprincipleforsolvesthesecomplexprojectanalysisestimationproblemstoprovidetheeffectiveway.Ourcountryin"

95"

PlanperiodvigorouslypromotestheCADtechnology,mechanicalprofessionlargeandmiddlescaleneterriesCADpopularratefrom"

85"

End20%enhancesthatpresent70%.WithenterpriseapplicationofCAD,engineeringandtechnicalpersonnelhasgraduallygetriddrawingboard,andwilljointhemainenergyhowtooptimizethedesign,engineeringandimprovingthequalityofproducts,computer-aidedengineeringanalysis（CAE.ComputerAidedEngineering）methodandsoftwarewillbethekeytechnicalelements.

lnengineeringpractice,finiteelementanalysissoftwareandCADsystemintegrationdesignstandardsshouldbeaqualitativeleap,mainlyinthefollowingaspects:

Theincreasedesignfunction,reducesthedesigncost;

Reducesdesignandtheanalysiscycleperiod;

Increaseproductandprojectreliability;

Usestheoptimizeddesign,reducesthematerialtheconsumptionorthecost;

Discoversthelatentquestioninadvancebeforetheproductfactureortheprojectconstruction;

Simulateseachkindofexperimentalplan,reducestheexperimentaltimeandthefunds;

Carriesonthemachineaccidenttoanalyze,searchaccidentcausefactor.

InvigorouslypromotestheCADtechnologytoday,fromthebicycletotheaerospacecraft,alldesignsmanufactureallwillnotbeabletoleavethefiniteelementanalysiscomputation,FEAobtainsthemoreandmorewidespreadvalueintheengineeringdesignandtheanalysis.ThenextchartistheAmericanSanFranciscobaybridgeearthquakerespondsthecomputationthefiniteelementanalysismodel.Thedevelopmentdirectionandonsignificantprogressinternationalearly20thcenturyintheendofthe50'

s,atthebeginningofthe60'

shastheformidablefunctionontheinvestmentmassivemanpowerandthephysicalresourcedevelopmentthefiniteelementanalysisprocedure.Whatismostfamouswas（NASA）entrustsUSbyAmericancountrySpaceAgencyin1965tocalculatetheNASTRANfiniteelementanalysissystemwhichthescientificcompanyandtheBellaerospacesystemcompanydeveloped.

Thissystemdevelopmentuntilnowhadseveraldozenseditions,isinthepresentworldthescaleisbiggest,thefunctionstrongestfiniteelementanalysissystem.Fromatthattimetothepresent,theworldeachplacedevelopmentfacilityandtheuniversityalsodevelopedonebatchofscalessmallerbuttousenimble,thepriceislowerspecial-purposeorgeneralfiniteelementanalysissoftware,mainlyhadGermanASKA,England'

sPAFEC,France'

scompany'

stheandsoonSYSTUS,US'

SABQUS,ADINA,ANSYS,BERSAFE,BOSOR,COSMOS,ELAS,MARCandSTARDYNEproduct.NowontheinternationalFEAmethodandthesoftwaredevelopmentpresentsbelowsometendencycharacteristics:

1.developsfromthepurestructuremechanicscomputationtosolvesmanyphysicalfieldsquestionfiniteelementanalysismethodmostearlyiscomesfromthestructurematrixanalysisdevelopment,graduallypromotestotheboard,theshellandtheentityandsoonthecontinualbodysolidmechanicsanalysis,thepracticeprovedthisisoneextremelyeffectivenumericalanalysismethod.Moreovertheoreticallyalsoalreadyproved,solongasusesintobeseparatedsolutionobjecttheunitenoughtobesmall,theobtainedsolutionmayenoughapproachtotheprecisevalue.

Thereforetherecentyearsfiniteelementmethodhasdevelopedquestiontheandsoonhydromechanics,temperaturefield,electricityconduction,magnetic