数控车床实践加工-葫芦

15420138ProgressinSteelBuildingStructuresVol．15No．4Aug．2013收稿日期:2012－11－07;收到修改稿日期:2013－03－27作者简介:李春祥(1964—)，男，博士，教授，主要从事钢结构教学和科研工作。E-mail:[e-mail]。汪英俊(1986—)，男，硕士，主要从事民用建筑结构设计。ABAQUS李春祥1，汪英俊21．2000722．312000StripModelSM。ABAQUSUELforSM。ABAQUS4。、1020。2%。1/40。TU313TU352．1A1671－9379201304－0028－07ABAQUSBasedModuleforElasto-PlasticDynamicAnalysisofAseismicSteelPlateShearWallsLIChun-xiang1WANGYing-jun21．DepartmentofCivilEngineeringShanghaiUniversityShanghai200072China2．HuahuiEngineer[e-mail]singtension-onlystripsiscapableofpredictingthepost-bucklingbehaviorofsteelplateshearwallsSPSWswitheconomicalcomputationcosts．ThispaperpresentsausersubroutinedevelopedforevaluatingseismicresistanceofSPSWnamedUELforSMincommercialfiniteelementsoftwareABAQUS．ThevalidityofUELforSMisestablishedthroughcomparingagainstthetestresultsonafour-floorsingle-bayofSPSW．Itisfoundthatundermonotonicloadingutilizingaratioof2%ofpost-yieldstrainhardeningtoinitialelasticmodulusforsteelplatesachievedbetterfitwithtestresults．ThustheanalysiswascarriedoutonSPSWundercyclicloadingusingtheabovepost-yieldtoelasticmodulusratio．ThepredictionsfromUELforSMarecomparedtothoseobtainedfromexperimentsandagoodagreementisobtainedwhenthestorydriftissmallerthan1/40．KeywordssteelplateshearwallSPSWstripmodelSMusersubroutineseismicresistanceSPSWsVerticalBoundaryElementVBE、HorizontalBoundaryElementHBEWebLFＲS、。SPSWs。SPSWs、、、。CBFsSPSWs、SPSWs。2070SPSWs。SPSWs、。2080SPSWsSPSWs。SPSWs4ABAQUS。1。SPSWsSPSWs1-5。SPSWs。SPSWs1OliveViewHospital。1994Northridge6。1995SPSWs351。55LosAngelesConventionCenterHotelSPSWs7。337m“+SPSWs+”SPSWs8。SPSWsStripModelSM。SMSPSWs。ABAQUSABAQUSSM。ABAQUSUELforSM。1SPSWsThoburn91。SMTimlerKulak10SPSWsα=tan－11+tL/2Ac[]/1+th1/Ab+h3/360IcL()[]槡1thLIcAcVBEAbHBE。SMSPSWs11。V=12FytLsin2α2Fy1。SMSPSWs。SPSWsSM。CAN/CSA16-01、FEMA450、AISC341、AISCDesignGuide20SMSPSWs。SM、。。。1%～2%。ABAQUSUMATUEL。SMUEL。ABAQUSSPSWs。。1Fig．1StripmodelSM2SPSWsLρx、uεxji=xj－xiuji=uj－u{ixyzuυω3ε=1L2xjiuji+yjiυji+zjiωji+12u2ji+υ2ji+ω2ji[]46×6KeKe=K－K[]KK5K=EAL3x2jixjiyjixjizjiy2jiyjizjiz2ji69215Me=ρAL/2ρAL/[]27PiMu··i+Cu·i+Kui=Pi8fSiKuiMu··i+Cu·i+fSi=Pi9Newmark8u·i+1=u·i+1－γu··i+γΔtu··i+110ui+1=ui+Δtu·i+0．5－βΔt2u··i+βΔt2u··i+1111011βγΔt。Δui=ui+1－uiΔu·i=u·i+1－u·iΔu··i=u··i+1－u··iΔPi=Pi+1－Pi121011Δu·i=Δtu··i+γΔtΔu··iΔui=Δtu·i+Δt22u··i+βΔt2Δu··i1313Δu··i=1βΔt2Δui－1βΔtu·i－12βu··i14Δu·i=γβΔtΔui－γβu·i+Δt1－γ2()βu··i151415MΔu··i+CΔu·i+KΔui=ΔPiK^Δui=ΔP^i16K^=K+γβΔt+1βΔ()t2MΔP^i=ΔPi+1βΔtM+γβ()Cu·i+12β+Δt12β－()1[]Cu··i1716Δui1514Δu·iΔu··i12ui+1、u·i+1u··i+1。i+18“”。9MΔu··i+CΔu·i+ΔfSi=ΔPi18Δf()Si=KisecΔui19ui+1Kisec。ΔtKiTKisec。Δf()Si≈KiTΔui20KiTT18MΔu··i+CΔu·i+KiΔui=ΔPi2121。Δt。。Newton-Ｒaphson。16K^iΔui=ΔP^i22ΔP^i17K^i=Ki+γβΔt+1βΔ()t2M231K^iΔu1i=ΔP^i241“Δf1”ΔP^iΔＲ2=ΔP^－Δf1。ΔＲ2Δu2iK^iΔu2i=ΔＲ2=ΔP^－Δf125Δu2iΔＲ3。l。Δu=∑lj=1ΔujΔuli。ii+1Δui=∑lj=1Δuj26Δui。、。3SPSWsSM。ABAQUS。、。。。ABAQUSABAQUS。ABAQUS034ABAQUSUserSubroutine。、。①ABAQUS②FOＲTＲAN③④Ｒestart⑤ABAQUS。ABAQUSUser-definedMaterialMechanicalBehaviorUMATUser-definedElementUEL。ABAQUS/StandardABAQUS/Explicit。UELUEL12。2ABAQUSSPSWsSMUELforSM。ABAQUSUELSDVUEL。UEL。2ABAQUSFig．2FlowchartofABAQUSbasedUELforSMofearthquake-resistantSPSWsusingSM4UELforSMABAQUSUEL2SDVUEL。UEL。UELforSMABAQUS．inp。……………………………………*USEＲELEMENTNODES=2TYPE=U1PＲOPEＲTIES=6COOＲDINATES=3VAＲIABLES=28123*UELPＲOPEＲTYELET=elset_nameArea_of_StripModulus_of_ElasticityPossion＇s_ＲatioDensityPost－yield_Stiffness_ＲatioYield_Stress*ELEMENTTYPE=U1ELSET=elset_name1315……………………………………*USEＲELEMENTU126328SDV。*UELPＲOPEＲTY。*ELEMENT。55．1ABAQUSUELforSMUELforSMSPSWsDriver3UELforSM。4SPSWs350%460%。7．42m3．05m。11．927m2、31．829m41．835m。W310×118。1、2、3W310×60W530×82。SPSWs。。4．8mm、4．8mm、3．4mm3．4mm。3SPSWsmmFig．3SPSWstestmodelstructureUnitmm5．2SPSWsABAQUSSPSWs。4ABAQUS。ABAQUSB31Timoshenko。。、1020。UELforSM。。。、。。。。。。0、1%2%。4SPSWsFig．4SMofSPSWstestmodelstructure5．3UELforSM5UELforSM。51UELforSM。SMSPSWs。234ABAQUS5UELforSMFig．5UELforSMandexperimentalresultsoffirststoryshearvs．firststorydriftundermonotonicloading。。SPSWs。22%1/40131/50。。UELforSM。1/40UELforSMSPSWs。31%2%。1/501/40～1/30。4。1/80。2%UELforSMSPSWs。UELforSMSPSWsUELforSM→→→→……。UELforSM。。62%UELforSM。6UELforSMFig．6UELforSMandexperimentalresultsoffirststoryshearvs．firststorydriftundercyclicloading61UELforSM。51/501/40。UELforSM。2UELforSM→→→→。UELforSM-。3。UELforSM。4。x5、。。6SMSPSWs。ABAQUSUELforSM。UELforSM4SPSW。UELforSM1/403315UELforSM。UELforSM。1FujitaniHYamanouchiHOkawaIetal．Damageandperformanceoftallbuildingsinthe1995HyogokenNanbuearthquakeC∥ProceedingsofThe67thＲegionalConferenceCouncilonTallBuildingandUrbanHabitat．Chicago1996103-1252CacceseVElgaalyMChenＲ．Experimentalstudyofthinsteel-plateshearwallsundercyclicloadJ．JournalofStructuralEngineering19931192573-5873DriverＲGKulakGLKennedyDJLetal．Cyclictestoffour-storysteelplateshearwallJ．JournalofStructuralEngineering19981242112-1204DriverＲGKulakGLElwiAEetal．FEandsimplemodelsofsteelplateshearwallJ．JournalofStructuralEngineering19981242121-1305LubellASPrionHGLVenturaCEetal