smamr復(fù)合型阻尼器及在大跨度挑篷結(jié)構(gòu)中的減振控制研究

1、北京工業(yè)大學(xué)碩士學(xué)位論文SMAMR復(fù)合型阻尼器及在大跨度挑篷結(jié)構(gòu)中的減振控制研究姓名：卞曉芳申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：結(jié)構(gòu)工程指導(dǎo)教師：薛素鐸20040501ABSTRACTInthefieldofvibrationcontrolforcivilstructures，intelligentcontrolbasedonselfperceptive，selfdiagnosisandselfadaptivepropertiesofsmartma

2、terialhasattractedmuchattentionbyresearchers，inwhichShapeMemoryAlloy(SMA)andMagnetorheologicalFluid(MR)aretwokindsofmostpromisingmaterialsintheresearchInthisthesis，acompositeSMA—MRdamperisproposedanddesignedutilizingSMAa

3、ndMRmaterialpropertiesThecontrolperformanceofthedamperisinvestigatedAndthevibrationcontroltheoryandcontroleffectivenessofthedamperinlongspancanopyroofstructuresarestudiedThroughtheresearch，followingcreativeachievementsha

4、vebeellmade：(1)AcompositeSMA—MRdamperisproposedanddesignedBased011thesuperelasticandshapememorypropertyoftheSMAmaterialandthefeatureofMRfluid，acompositeSMA—MRdamperhavingthecapacityofsemi—activecontrolisdeveloped(2)Atheo

5、reticalmodal。ofSMAMRdamperisestablishedandthedamper’SworkingperformanceisanalyzedByinputtingsinewaves，thehysteresiscurvesareobtainedunderbothsmallandlargecarthquakesAndparameteranalysisoftheSMAMRdamperiscarriedout(3)Thed

6、ampingperformanceoftheSMA—MRdamperissystematicallyinvestigatedAnumericalsimulationanalysisforasingle—degree—offreedomsystemisperformedItisshownthattheSMA—MRdamperpossessesasignificantperformanceofdamping，andtheadaptivesm

7、artcontrolforlargeandsmallearthquakesisrealized(4)ThedesignedSMA—MRdamperisappliedtolong—spancanopyroofstructurestoinvestigateitsvibrationcontrolperformanceTheoreticalmodalofthesystemissetupandacomputerprogramforvibratio