基于ANSYS-LS-DYNA钻削过程的数值仿真

28120122MachineDesignandResearchVol．28No．1Feb．20122011－09－16SAMC11JS07216MSV－2010－121006-2343201201-085-05ANSYS/[e-mail]。LS－DYNA。。。。TH166AFiniteElementSimulationforThin-panelDrillingProcessWithANSYS/LS-DYNAXUXiao-xiaHUYong-xiangSUNYao-feiYAOZhen-qiangSchoolofMechanicalEngineeringShanghaiJiaoTongUniversityStateKeyLaboratoryofMechanicalSystemandVibrationShanghai200240ChinaAbstractDrillingisanimportantprocessandwidelyusedintheaircraftassembly．Accordingtothepracticalapplicationofdrillingprocessintheaircraftathree-dimensionaldrillingdynamicsimulationmodelisestablishedforthedrillingofthin-wallstructuralpartstosimulatethedrillingprocessusingthecommercialexplicitdynamicanalysisprogramLS-DYNA．Theformationofcuttingchipandburrissimulatedandthedrillingforceispredictedbythemod-el．Thegenerationoffrictionalheatingandthetransienttemperaturefieldduringdrillingwereanalyzedbythedirectthermomechanicalcouplingfieldfiniteelementmethod．Thescrewdrillingcuttingcanbefoundfromsimulation．Theresultshowsthatdrillingburrisgeneratedbothintheprocessofdrillinginandoutandtheburratdrilling-outisfoundtobebiggerthanthatatdrilling-in．Theaxialdrillingforceofresultshowsthattheanalysisagreeswellwiththetheory．Keywordsthin-panelstructuraldrillingFiniteelementsimulationcuttingchipburr。。1。。。。。Strenknowski2。YuebinGuoDADornfeld3304L。VijayakumarPalani4LS－DYNA。RuiLiAlbertJ．Shih5Ti6Al4V。6Deform－3D。7Defom－3D。、。、。ANSYS/LS-DYNA、、、。1、。、、、、。。Mu··+Cu·+Fi=pt1u··u·MCFipt。tn、u·n=12Δtun+1－un－12u··=1Δt2un+1－2un+un－132、31un+1=M+Δt2C－1Δt2pn－Fin+2Mun－M－Δt2Cun－14pnpt。。。。。。CPU。5%。LS－DANA。DeformLS－DANADe-form。ANSYSLS－DY-NA。22．1、、、18。、2024－T370751．5mm－2mm。。▲1、2．22。AutoCADФ6mm2Ф=118°β=30°Hypemesh2a。Ф1mm～Ф2mm。。。Ф1mmФ10mm2mm2b。HSS2024－T3。▲2。shell163solid164。6828237822500。2．35～8、104～105S－1＞1400℃。、。。JC。JC、。JCσ=A+Bεn1+Clnε·ε0()[]·×1－θ－θtθmelt－θ()t[]m5σεε·ε0·θmeltθt20℃ABCnm。。、。JC。ω1。ωω=∑Δεplεpl6Δεplεpl。。εpl=d1+d2expd3()[]pq1+d4lnε·ε0()[]·×1+d5θ－θtθmelt－θ()[]t7P/qPq9。2。2JC/kg·m－3E/GPaA/MPaB/MPaCnmHSS87562．05E80．33－－－－－2024－T3277073．0840．342654260．0150．341．03GRUNESIEND1D2D3D4D5S1S2S3GAMAOA－－－－－－－－－－0．130．13－1．50．01100000－1．52．4－、。。。μcFs、FdDCμc=Fd+Fs－Fde－DC·Vrel8。。ErodingSurfacetoSurfaceContact。。LS－DYNA、、。。2．5－。、、。。12、3、。。10。—。－。0．911。2．6781ANSYS/LS-DYNA。3。zz。3n/r·min－1Vc/m·min－1f/mm·r－11．2×1052260．81033．12024－T3。3。33a3b3c。3。a170μsb280μsc325μsd400μs▲312－14。3170μs280μs325μs400μs。3。。3d。。。。3．2、。。。▲4、。4。Ft=CFd0ZFfYFkF9FtNCFZFYFkFd0mm。▲5。Ft=11698．517N。40%1516Fz=Ft×0．4=4679．4068N。5150μs～200μsZ－force4500N。。4。3．3。。、、、。。5。。。6。。。8828▲641ANSYS/LS-DYNA2024－T3。。2。。。3。。1．J．20092461～64．2JSStrenkowskiCCHsiehAJShih．AnanalyticalfiniteelementtechniqueforpredictingthrustforceandtorqueindrillingJ．In-ternationalJournalofMachineTools＆Manufacture2004441413～1421．3YBGuoDADornfeld．Finiteelementmodelingofburrformationprocessindrilling304stainlesssteelJ．TransactionsoftheASMEUniversityofCaliforniaBerkeleyNOVEMBER2000122．4VijayakumarPalani．Finiteelementsimulationof3Ddrillinginuni-directionalCFRPcompositeMS．ThesisD．IndianUniversityofMadras2006．5RuiLiAlbertJShih．Spiralpointdrilltemperatureandstressinhigh-throughputdrillingoftitaniumJ．InternationalJournalofMachineTools＆Manufacture2007472005～2017．6．J．200625101143～1146．7．J．200842452～58．8．M．2007．9LivermoreSoftwareTechnologyCorporation．LS-DYNAKeywordUser’sManualVersion970vZ．Livermore2003．10SchulzHAbeleE．M．2010．11NasserSNGuoWG．DynamicresponseofconventionalandhotisostaticallypressedTi6AL4ValloysexperimentsandmodelingJ．MechanicsofMaterials200133425～439．12．J．1994567～8．13．J．200725185～87．14．J．199139134～139．15．M．1994．16．M．1999．1985－欁欁欁欁欁欁欁欁欁欁欁欁欁欁欁欁欁欁欁欁欁欁欁欁欁欁欁欁欁欁欁欁欁欁欁欁欁欁欁欁欁欁欁欁欁欁。811GUNTERHE．Amechanicalmodelofvocal-foldcollisionwithhighspatialandtemporalresolutionJ．JournaloftheAcousticalSocietyofAmerica2003113994～1000．2SVˇCEKPFEISTAUER．NumericalsimulationofflowinducedairfoilvibrationswithlargeamplitudesJ．JournalofFluidsandStructures2006201～206．3THOMSONSLMONGEAUL．AerodynamictransferofenergytothevocalfoldsJ．JournaloftheAcousticalSocietyofAmerica20051131689～1700．4FEISTAUERMFELCMANJ．MathematicalandcomputationalmethodsforcompressibleflowM．OxfordClarendonPress2003．5TITZEIR．ThemyoelasticaerodynamictheoryofphonationJ．NationalCenterforVoiceandSpeechDenver200682～88．6RCSchererVJVailBRockwell．Examinationoflaryngealad-ductionmeasureEGGWConferenceC//Woodbury1995269～290．7KNStevens．AcousticphoneticsM．TheMITPress1998．8GFant．AcousticTheoryofSpeechProductionM．TheHague1990．9HKSchutteJGSvecFSram．FirstresultsofclinicalapplicationofvideokymographyLaryngoscopeJ．19981081206～1210．10LRRabinerRWSchafer．DigitalprocessingofspeechsignalsM．1978．11JJJiangIRTitzeMeasurementofvocalfoldintraglottalpressureandimpactstressJ．JVoice199482132～144．12FAlipourRCSchere．DynamicglottalpressuresinanexcisednemiiarynxmodelJ．JVoice2000144443～454．1964－、ERPComputersimulationcomputer-aideddesignandmanufacturingERP。981ANSYS/LS-DYNA