一種新型形狀記憶合金阻尼器的減震控制研究.pdf

1、廣州大學碩士學位論文一種新型形狀記憶合金阻尼器的減震控制研究姓名：劉春暉申請學位級別：碩士專業(yè)：防災減災工程及防護工程指導教師：禹奇才劉愛榮20050519r州大學碩上學位論文英文摘要ABSTRACTWimth_edevelopmentofurbanconstruction，high—risesincreasedaybydaytheaseismicquestionofstructurebecomesparticularlyoutstan

2、dingStructureribrationcontrolhasofferedakindofeffectualmethodforaseismicdesignofthestructureShapememoryalloy(SMA)hasuniqueshapememorysuperelasticityandhighdampingcharacteristicsasal【indofnew—typeintellectualmaterial，rece

3、ivesthegreatconceminthefieldofstructurevibrationcontr01ThisthesisusesSMAmaterialtodevelopakindofnew—typeSMAdamperutilizethisdamperteactandimplementvibrationcontroltotheearthquakeoftheframestructure，havingcertainengineeri

4、ngvalueandtheorymeaning，thisthesislaunchesoutthefollowingworkmainly：(1)Somecharacteristicsofshapememoryalloyareintroducedindetail；theprincipleofvibrationcontrolusingthesecharacteristicsofshapememoryalloyisanalysed(2)Base

5、doffthecharacteristicsofshapememoryalloyanew—typeSMAdamperisdevelopedanditstheoreticalmodelissetuDThedisplacementbetweenfloorsismagnifiedseveraltimesbyusingleverandistransferredtoSMAropeThedeformationofSMArc。peislargerth

6、anthedisplacementbetweenfloors，SOthattheSMAdampercandissipatemoreearthquakeenergyf3)Verifythestress—strainrelationshipofshapememoryalloyandhysteresiscurveofSMAdamperbyusingfiniteelementmethodanalysethechangeofcharacteris

7、ticparametersofSMAdamperwhenthedisplacementamplitudeandpre—strainaredifferent(4)SetupthefiniteelementmodelofframestructurewithSMAdamperunderthreedifferentsituationsanalyse山eeffectofSMAdamperbyinputtingE1一centroNSandn血wav

8、esatthestageofminorandmajorearthquakeThreedifferentsituationsincludenotinstallingdampers，installingdampersandinstallingdamperswhichcanmagnifydisplacementbetweenfloorstwotimesTheresultsshow：(a)thevibrationcontroleffectond

9、isplacementisbetterthanonacceleration；(b)thevibrationcontroleffectofSMAdamperwhichmagnifydisplacementbetweenfloorstwotimesisbetterthanⅡledamperwhichdoesnotmagnifydisplacementbetweenfloorsItisinferedthatwecanimprovethevib