摘要
Inrecentyears,inflatablestructureshavebeenasubjectofinterestforspaceapplicationssuchascommunicationantenna,solarthermalpropulsionandentry/landingsystems.Theinflatablestructurescharacterizedbyhighstrength-to-massratios,minimalstowagevolume,whichmakesthemsuitableforcost-effectivelargespacestructures.Atypicalexamplefortheinflatablestructureistheinflatedtoruswhichoftenusedinordertoprovidestructuresupport.Inthisstudy,ourmainfocusistounderstandthedynamiccharacteristicsofaninflatedtorusinordertoformulateanaccuratemathematicalmodelsuitableforactivevibrationcontrolapplications.Acommercialfiniteelementpackage,ANSYS,isusedtomodeltheinflatedtorus.Toverifythemodeltheobtainedfrequenciesandmodeshapesarecomparedwiththepublishedresults,whicharederivedusinganalyticalapproach,theverificationshowsagoodagreementbetweentheFEMandtheanalyticalresults.Basedontheverifiedmodel,parametricstudywasinvestigated;thematerialthicknessincreasecausesthenaturalfrequenciesdecrease,whiletheincreaseoftheinflationpressuresimplyresultsinstiffeningthering,whichmeansthatthenaturalfrequencyincreased.TheFEManalysisgivesaneasyandfastwayforthevibrationanalysisofthestructurescomparedwiththecomplicatedanalyticalsolutions.
出版日期
2010年01月11日（中国期刊网平台首次上网日期，不代表论文的发表时间）
