| نویسندگان | علی قربانپور-علی شیراوند -رهی-رضا کلاه چی |
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| نشریه | PHYSICA B |
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| تاریخ انتشار | ۲۰۱۲-۷-۰۱ |
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| نوع نشریه | الکترونیکی |
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| نمایه نشریه | ISI ,SCOPUS |
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چکیده مقاله
In thispaper,vibrationanalysisofthecoupledsystemofdouble-layeredgraphenesheets(CS-DLGSs)
embeddedinaVisco-Pasternakfoundationiscarriedoutusingthenonlocalelasticitytheoryof
orthotropicplate.ThetwoDLGSsarecoupledbyanenclosingviscoelasticmediumwhichissimulated
as aVisco-Pasternakfoundation.ConsideringtheVonKa´rma´n nonlinearstrain-displacement-relations,
the motionequationsarederivedusingtheHamilton’sprinciple.Differentialquadraturemethod
(DQM)isappliedtoobtainthefrequencyratioforvariousboundaryconditions.Thedetailedparametric
studyisconducted,focusingonthecombinedeffectsofthenonlocalparameter,aspectratio,graphene
sheet’ssize,boundaryconditionsandtheelasticandviscoelasticmediumcoefficientsonthefrequency
ratio ofCS-DLGSs.Inthiscoupledsystem,twocaseofDLGSsvibrationareinvestigatedandcompared
with eachother:(1)In-phasevibration(2)Out-of-phasevibration.Theresultsindicatethatthe
frequencyratiooftheCS-DLGSsismorethanthesingle-layeredgraphenesheet(SLGS).Theresultsare
in goodagreementwiththepreviousresearches.