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ID:8108954
大小:738.52 KB
页数:10页
时间:2018-03-06
《智能组合梁two finite elements for general composite beams with piezoelectric actuators and sensors》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、ARTICLEINPRESSFiniteElementsinAnalysisandDesign()--ContentslistsavailableatScienceDirectFiniteElementsinAnalysisandDesignjournalhomepage:www.elsevier.com/locate/finelTwofiniteelementsforgeneralcompositebeamswithpiezoelectricactuatorsandsensorsMariaAug
2、ustaNetoa,∗,WenbinYub,SitikanthaRoybaDepartmentofMechanicalEngineering,CoimbraUniversity,3020Coimbra,PortugalbDepartmentofMechanicalandAerospaceEngineering,UtahStateUniversity,Logan,UT30332-4130,USAARTICLEINFOABSTRACTArticlehistory:Twofiniteelementsfo
3、rthestaticanalysisofsmartbeamswithpiezoelectricsensors/actuatorsarepre-Received21January2008sented:adhocsmartbeamelement(ADSBE)andvariationalasymptoticsmartbeamelement(VASBE).Receivedinrevisedform6October2008Bothelementsrelyonthecomputationofthecross-
4、sectionalmatricesassociatedwiththeelectrome-Accepted13October2008chanicalpropertiesofthebeamcross-section.ADSBEusestheTimoshenkocross-sectionalstiffnessmatrixcomputedbytheVABSprogram,andtheelectricfieldisassumedconstantacrossthethicknessKeywords:ofeac
5、hpiezoelectriclayer.Takingadvantageofthecross-sectiondiscretizationofthebeam,alltheSmartbeamsVariationalasymptoticalmethodmatricesrelatedtotheelectricfieldarealsocomputedbyperforminganumericalintegrationusingFiniteelementmethodtheVABSprogramthatwasext
6、endedtoaccountforthesenewquantities.VASBEisbasedonthefullyVABScoupledTimoshenkotheoryforsmartbeamsconstructedusingthevariationalasymptoticmethod.Thistheorydecouplestheoriginalthree-dimensionalelectromechanicalproblemtoatwo-dimensionalelec-tromechanica
7、lcross-sectionalanalysisandaone-dimensionalbeamanalysis.Thecross-sectionalanalysisprovidesaone-dimensionalconstitutivemodelforthebeamanalysiswithoutaprioriassumptionsregardingthegeometryofthecross-section,theelectricfielddistribution,andthelocationofs
8、martmaterials.Severalexamplesavailableintheliteratureareusedtovalidatetheaccuracyofthesetwonewelements.ThenumericalresultsobtainedusingADSBEandVASBEcorrelatedwellwithotherpublishedresults.Forstructuresthatareoutofthelimitsinwhichonestructurema
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