摘要
Hybridsimulationhasbeenshowntobeacost-effectiveapproachforassessingtheseismicperformanceofstructures.Inhybridsimulation,criticalpartsofastructurearephysicallytested,whiletheremainingportionsofthesystemareconcurrentlysimulatedcomputationally,typicallyusingafiniteelementmodel.Thiscombinationisrealizedthroughanumericaltime-integrationscheme,whichallowsforinvestigationoffullsystem-levelresponsesofastructureinacost-effectivemanner.However,conductinghybridsimulationofcomplexstructureswithinlarge-scaletestingfacilitiespresentssignificantchallenges.Forexample,thechosenmodelingschememaycreatenumericalinaccuraciesorevenresultinunstablesimulations;thedisplacementandforcecapacityoftheexperimentalsystemcanbeexceeded;andahybridtestmaybeterminatedduetopoorcommunicationbetweenmodules(e.g.,loadingcontrollers,dataacquisitionsystems,simulationcoordinator).Theseproblemscancausethesimulationtostopsuddenly,andinsomecasescanevenresultindamagetotheexperimentalspecimens;theendresultcanbefailureoftheentireexperiment.Thisstudyproposesaphasedapproachtohybridsimulationthatcanvalidateallofthehybridsimulationcomponentsandensuretheintegritylargescalehybridsimulation.Inthisapproach,aseriesofhybridsimulationsemployingnumericalcomponentsandsmall-scaleexperimentalcomponentsareexaminedtoestablishthispreparednessforthelarge-scaleexperiment.Thisvalidationprogramisincorporatedintoanexisting,maturehybridsimulationframework,whichiscurrentlyutilizedintheMulti-AxialFull-ScaleSub-StructuringTestingandSimulation(MUST-SIM)facilityoftheGeorgeE.BrownNetworkforEarthquakeEngineeringSimulation(NEES)equipmentsiteattheUniversityofIllinoisatUrbana-Champaign.Ahybridsimulationofafour-spancurvedbridgeispresentedasanexample,inwhichthreepiersareexperimentallycontrolledinatotalof18degreesoffreedom(DOFs).Thi
出版日期
2014年04月02日（中国期刊网平台首次上网日期，不代表论文的发表时间）
