资源描述：
《Wave propagation generated by piezoelectric》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、ActaMechanicaActaMechanica183,155–176(2006)PrintedinAustriaDOI10.1007/s00707-006-0313-zWavepropagationgeneratedbypiezoelectricactuatorsattachedtoelasticsubstratesX.D.WangandG.L.Huang,Edmonton,AlbertaReceivedMay16,2005;revisedNovember15,2005Publishedonline:April10,2006ÓSpringer-Verlag
2、2006Summary.Piezoelectricactuatorscanbeusedtogeneratehigh-frequencyelasticwavesfordamageidentificationofmaterials.Thispaperprovidesacomprehensivetheoreticalstudyoftheelectromechanicalbehaviorofsurface-bondedorembeddedpiezoelectricactuatorsunderinplaneelectricfields.Amodifiedone-dimensio
3、nalactuatormodelisintroduced,fromwhicharbitrarilydistributedelectricfieldsalongtheactuatorcanbeconsidered.Themodelisusedtosimulatethedynamicloadtransferbetweentheactuatorandthehostmediumandtheresultingelasticwavepropagationbyusingtheintegraltransformmethodandsolvingtheresultingsingula
4、rintegralequations.Ofparticularinterestisthegeneratedwaveformawayfromtheactuatorunderdifferentelectricfields.Anasymptoticanalysisisconductedtoobtainthefar-fieldsolutionofthewavefield.Thepropertyoftheresultingwaveformisstudied,andthesimulationshowsthatthedirectionofwavepropagationcanbeadj
5、ustedbycontrollingthephasedistributionoftheappliedelectricfieldalongtheactuator.1IntroductionThedevelopmentofnewpiezoceramicmaterialswithhighelectromechanicalcouplinghasrevivedintenseresearchanddevelopmentofnewpiezoelectricactuatorsfordifferentstructuralapplications,e.g.,thevibrationan
6、dnoisecontrolofspaceandaircraftstructures,thesmartskinsystemforsubmarines,smartsportsproducts,andthenon-destructiveevaluation(NDE)ofmaterials[1]–[4].Thesenewpiezoceramicactuatorscanbeeasilyfabricatedindifferentdesiredshapesandcanbeusedindifferentapplicationstoachievethehighestpossibled
7、eformationorforceforlowestpossibleappliedvoltage.Theyhavetheadvantagesoflowcost,quickresponse,lowpowerconsumption,compactness,andhighsensitivityoveralargerangeofloadingfrequencies.Asaresult,inadditiontotheapplicationinmonitoringandcontrollingtheglobalbehaviorofstructures,theyalsoshow
8、thepotential
