压电结构迟滞非线性与冲击特性的实验分析

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1、ABSTRACTPiezoelectricmaterialsarewidelyusedassmartmaterialsfortheirstablepiezoelectricproperties．Ultrasonicmotorsandpiezoelectricpowergeneratorsaretwotypicalapplicationsofpiezoelectricmaterialsinengineering．Astheundesiredhystereticnonlinearitiesbeinginherentinpiezoele

2、ctricmaterials，itisimportanttoresearchthehystereticnonlineardynamicsofpiezoelectricmaterials．Inthispaper,thecubicpolynomialmodelwasanalyzedandimprovedfirstly,andsomeexperimentsonhysteresisofpiezoelectricceramiclaminatewerecardedout．Secondly,thenonlinearbehaviorofultra

3、sonicmotorwasmeasuredandanalyzed．Finally,byusingimpacttestequipment，someexperimentalresearchesweredonetoinvestigatetheimpactresponsesofthepiezoelectricceramiclaminate．ThemajorworkofthepaperWaSsummarizedasfollows：(1)Thepropertiesofpiezoelectricmaterialsandtheirapplicat

4、ionsinultrasonicmotorsandpowergeneratorwereintroducedbriefly．Thedevelopmentofhystereticnonlinearitiesofpiezoelectricmaterials，nonlineardynamicsofultrasonicmotors，aswell嬲impactpropeaiesofpiezoelectricstructuresissummarized．(2)Theapplicableconditionandrelatedparameterso

5、fthecubicpolynomialhysteresismodelwereanalyzedqualitativelybycomparingitwiththeotherhysteresismodel．Basedontheaboveanalysis，oneimprovedpiezoelectrichysteresismodelwasproposed．(3)Withrotarytravelingwaveultrasonicmotor’SfeedbackvoltageandrotorspeedmeaSured，thedynamicres

6、ponsesofthestatorandtherotorweremeasuredandsomenonlinearphenomenawerefound．(4)Theimpacttestdevicewasinventedbyanalyzingandmeasuringthesizeandmodeofpiezoelectricceramicelement．Theimpactresponsesofpiezoelectricceramiclaminatesandthemaximumcarryingcapacityofpiezoelectric

7、ceramicelementsweremeasuredtoensurepiezoelectricceramicelementworknormally．Thegeneratingpowerofpiezoelectricstructurewastested．Alltheseresultswouldmakeafoundationforfurthertheoreticalresearchofpiezoelectricpowergeneratorsinfuture．、Theresultsgiveninthisthesisprovideaba

8、sisfortheapplicationsofthecubicpolynomialhysteresismodelandthemodelofwholesystemofultrasonicmotor，andmakeafoundationfortheor