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1、S・Baudin,P.Ray,B.J.MacDonald・Developmentofanovelmethodoftubebendingusingfiniteelementsimulation,JournalofMaterialsProcessingTechnology,2004,153-154:128-133.研究聚氨酯芯棒情况下，弯管的起皱、横截面形状变化及应力应变分布。Formedtube(b)ComponentFormedwithAxialLoadingPressureFig1.Theproposedrubebendmgprocess.Thegeometryofthemodelwase
2、asilydevelopedusingtheANSYSpre-processingtools.Inthiscasesimulationswerecarriedouttoproducea90bendinastraighttubeofinnerdiameter37.6mm,outerdiameter40mmandlength140mm.Thediehadaninnerradiusof40mmandadiebendradiusof70mm.Theouterdiameteroftheurethanerodwas37.6mmanditslengthwas140mm.Themesheddie,tubea
3、ndrodgeometry'sareshowninFig・2..212E・03.043074・087736・131408・17526.022093.100017.133370・1071Stress(GPa)・NodalSolution.oawz.979<91・U^V9l・22*(c)Zoomseciionfofthelensiledarea(d)Zoomsectionof(hecompressedarea五萨礼观广%^加Strai(GPn>Fig5.Crosssectionatthefromedgeofthetube:bnNhsesstressNO3ALSOLUTIONSTEP=tSUB-
4、LOO/EKPAMOEDMQV(AVO
5、OMX>148.8445MMZ.5B9E-93SMX-・2A0・,4.04713・093711・140272.186834f070431・163553・2101NODALSOLUTIONST""SUU=100TIMk«4.K>/FXPAMDFDMQV(AVG)DMX^141.844SNN二39.8SMX•.210114Fig8DistnbutionofVonMisesstressintheformedtubeNODALSOLUTIONSTEPsl&UB=100I1ME=4.95/FXPANDFDCPPLCQV(AVG)DMX148.844SMN8.41
6、2E-03SMX=703100ANNODALSOLUTIONSTEP=1SUBzlOOTIME«4.^5/EXPANDEDEPPLEQV.703109AN412E-03.156567.312722.468877.625032・078A89234644390799・346934.7031C•412E8・156567.312722.468S77・625032・0/8489・234644・390799・546954・7031CFig.9.DistributionofonNIisesstrainintheformedtube.[2]Y.
7、Zhang,D・Redekop・Shellelementsimulationofthepushmethodoftubebending,JournalofArchievementsinMaterialsandManufacturingEngineering,2006,17(1-2):301-304・研究弯管过程，弯曲半径、材料类型、摩擦参数等的变化对弯管质量的影响规律。Aparametricstudyisthencarriedout,givingresultsforanumberofvariationsintheformingprocess,includinggeometry,material
8、properties,andlubricationparameter,andfinallyconclusionsaredrawn.【3】H・A.Al-Qureshi.Elastic-plasticanalysisoftubebending,InternationalJournalofMachineToolsandManufacture,1999,39(1):87-104.对弯制工艺采用解析方法(弹塑性分析)分
