Title of article
Aseismicdesignofstructure–equipmentsystemsusingvariablefrequencypendulumisolatorOriginalResearchArticle
Author/Authors
PraneshMurnal، نويسنده , , RaviSinha، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2004
Pages
11
From page
129
To page
139
Abstract
Slidingisolationsystemshaveemergedasveryusefulvibrationcontroltechniquethatincorporateisolation,energydissipationandrestoringmechanisminoneunit.However,mostcurrentlyavailablesystemssuchasfrictionpendulumsystem(FPS)andpurefriction(PF)systemhavepracticallimitationsandareoflimitedeffectivenesswheninputexcitationlevelissignificantlydifferentfromitsdesignlevel.Toovercometheselimitationswhilepreservingtheadvantages,anewsystemcalledthevariablefrequencypendulumisolator(VFPI)hasbeendevelopedbytheauthors.TheisolationperiodofVFPIcontinuouslydecreaseswithincreaseinhorizontalslidingdisplacementwhichresultsinamorerobustisolationsystem.TheVFPIalsolimitsthemaximumforcetransmittedtothestructurebyprovidingarestoringforce-softeningmechanism.Inthispaper,ithasbeenshownthatisolatingastructureusingVFPIisveryeffectiveforvibrationcontrolofstructure–equipmentandotherprimary–secondarysystems.Anexamplefive-storeystructurewithequipmentmountedatitstophasbeenanalysedtodemonstratetheeffectivenessofVFPI.ItisshownthatVFPIprovidesbettervibrationcontrolpropertiescomparedtootherfrictionisolationsystems,andexcellentresponsereductionisobservedforawiderangeofequipmentpropertiesandexcitationcharacteristics.TheperformanceoftheexamplestructurewithVFPIhasbeencomparedwiththeotherfrictionalsystemssuchasFPSandPFsystem.
Journal title
Nuclear Engineering and Design Eslah
Serial Year
2004
Journal title
Nuclear Engineering and Design Eslah
Record number
894756
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