遲滯非線性彈性元件的實驗建模與參數(shù)辨識.pdf

1、重慶大學碩士學位論文遲滯非線性彈性元件的實驗建模與參數(shù)辨識姓名：景軍平申請學位級別：碩士專業(yè)：機械電子工程指導教師：唐一科20000401重慶大學碩士學位論文英文摘要ABSTRACTThenon1inearcharacteristicofstructurehasagreateffectonthedynamicreSl90nseofvibrationandimpact，whichiSconversetotheproblemofsystem

2、identificationInthispaper，basedonacomplexstructure，theheadofmissile，mathematicalmodelandparametersidentificationforanonlinearelasticelementwitllhystereticbehaviorarecarriedoutExperimentshowsmatundersteadyperiodicexcitati

3、onthedynamichystereticloopsoftheelementdependOilnotonlythevibrationlevel，butalsothevibrationfrequencyItiSdifficulttoputforwardamathematicalmodelwhichfaithfullyreflectsthehystereticcharacterFortunatelytherestoringforceoft

4、heelementCanbedecomposediritetwoparts：oneiS”nonlinearnonhystereticforce”，whichcanberegardedaSnonlinearelasticforce；andtheotheris“purehystereticforce”，whichCanberegardedasdampingforceAnewparameterisusedtodescribethe”pureh

5、ystereticforce”Resetoftheparametersidentificationshowsthatthismodelc髓expressthebystereticcharactereffectivelyThestudywhichiSbasedonvibrationexperimentandcombinedwiththeadvantagesofnumericalanalysis，aimsatthedevelopingofm

6、athematicalmodeloftherestoringforceForthesakeofprovidingbasictheorytodynamicdesignofisolatingvibration，anewmathematicalmodelisadvanced，theparametersofthemodelareidentifiedTheresearchprocessinthispaperalsobenefitstoanalys