旋轉(zhuǎn)超聲電機(jī)定子超諧共振分析與非線性動(dòng)力學(xué)實(shí)驗(yàn).pdf

1、天津大學(xué)碩士學(xué)位論文旋轉(zhuǎn)超聲電機(jī)定子超諧共振分析與非線性動(dòng)力學(xué)實(shí)驗(yàn)姓名：李守曉申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：一般力學(xué)與力學(xué)基礎(chǔ)指導(dǎo)教師：曹樹謙20090601ABSTRACTUltrasonicmotorisanewdevelopedmini—motorinrecentdecadesTheUSMconvertsapiezoelectricallyexcitedresonantvibrationofthestatorintoamovemento

2、ftherotorbyfrictionalforcesBecauseitishighlyaffectedbythenonlinearfeatures，itisvaluabletostudythenonlinearfeaturesInthispaperthemethodofmultiplescalesWaSusedtoinvestigatethesuperharmonicresonanceofthenonlineardynamicmode

3、lofstandingwavevibrationofstatorwhichwasestablishedinconsideringthequadraticnonlinearconstitutiverelationsofpiezoelectricmaterials，andthenitwasusedtoinvestigatethesuperharmonicresonanceoftheoneofconsideringtheelastichyst

4、eresisThepiezoelectriccantilevermodelisdesignedandtheexperimentsystemisbuildedandthenonlinearexperimentwithitisdoneFinallytheexperimentresultsfromwhichwegetthenonlinearphenomenonarediscussedindetailsThecontentsaresummari

5、zedasfollows：Thefeature，backgroundandapplyoftheUSMareintroduced，andthenonlinearphenomenonandexperimentprocedureabouttheUSMarediscussedThemethodofmultiplescaleswasusedtoinvestigatethesuperharmonicresonanceofthenonlineardy

6、namicmodelofstandingwavevibrationofstatorThepiezoelectriccantilevermodelaredesigned，thenitiscalculatedonwithSAMCEFNonlineardynamicexperimentsarecarriedoutonthedesignedsystemThedatawhichindicatesthenonlinearphenomenonisan