資源描述：
《Seismic Analysis of Structures with Viscoelastic Dampers》由會員上傳分享，免費在線閱讀，更多相關(guān)內(nèi)容在行業(yè)資料-天天文庫。
1、SeismicAnalysisofStructureswithViscoelasticDampers12M.P.Singh,F.ASCE;andT.-S.ChangAbstract:Viscoelasticdampersarebeingusedinstructurestomitigatedynamiceffects.Themodelsofvaryingcomplexitiesfromsimplemaxwellelementtodifferentialmodelswithfractionalandcomplexorderderivativeshavebeenusedtorepresentthe
2、irfrequency-dependentforcedeformationcharacteristics.Morecomplexmodelsareabletocapturethefrequencydependenceofthematerialprop-ertiesbetter,butaredifTculttouseinanalyses.However,theclassicalmodelsconsistingofassembliesofKelvinand/orMaxwellelementswithanadequatenumberofparameterscanbeformedtocapturet
3、hefrequencydependenceasaccuratelyasthemoresophis-ticatedfractionalderivativemodelscando.Themainadvantageinadoptingtheseclassicalmodelsisasimplerandsmallersystemofequations,whichcanbeconvenientlyanalyzedfornonlinearandlinearsystems.Inthisstudy,thetwoclassicalmechanicalmodelsconsistingofKelvinchainsa
4、ndMaxwellladderareused.Itisshownthatthesemechanicalmodelsareaseffectiveasthefractionalderivativemodelincapturingtheeffectofthefrequencydependenceofthematerialpropertiesinresponsecalculationsandaremoreconvenienttouseindynamicresponseanalyses.DOI:10.1061/ASCE0733-93992009135:6571CEDatabasesubje
5、ctheadings:Seismicanalysis;Viscoelasticity;Damping;Structuralcontrol.IntroductionZhangetal.1989;ZhangandSoong1982;ShenandSoong1995.AnotherapproachistouseanalyticalmodelsthathavetheViscoelasticdampersaresomeofthepreferredenergydissipationsamestorageandlossmoduliasintheexperimentaldata.Adevicesforpa
6、ssiveseismicresponsecontrolofstructures.WhensimpleMaxwellmodeloritsmodiTcationshavebeenusedinstalledinastructure,theyprovideenergydissipationandstiff-Kirekawaetal.1992;Singhetal.2003,buttheydonothaveness,andbothofthesecharacteristicsarefrequencyandtempera-enoughparameterstoaccuratelycapturethefre
7、quencydepen-dence.Tocaptureitmoreaccurately,amoresophisticatedfrac-turedependent.ThesecharacteristicsarecommonlydeTnedintionalderivativemodelhasbeenusedinseveralstudiesinvolvingtermsofexperimentallyobtained
