皮帶驅(qū)動(dòng)機(jī)構(gòu)非線性動(dòng)力學(xué)研究.pdf

1、河北理工大學(xué)碩士學(xué)位論文皮帶驅(qū)動(dòng)機(jī)構(gòu)非線性動(dòng)力學(xué)研究姓名：李高峰申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：機(jī)械設(shè)計(jì)及理論指導(dǎo)教師：楊志安20070301河北理工大學(xué)碩士學(xué)位論文AbstractRegardingelectricmotorbeltpulleysandtheirscouplingsystemasobjects，westudynonlineardynamicsproblemsofthebeltdrivermechanismsystembymea

2、nsofelectromechanicalanalysisdynamics，nonlinearvibrationtheoryandnumericalanalysismethodThenonlineardifferentialequationwitllquadraticandcubicnonlinearitiesforvibrationanalysisofthebeltdrivermechanismisderivedbymeausofLa

3、grangeequationApplyingthemethodofmultiplescalesforthenonlinearvibrationtheapproximatesolutionsof口iII蛐rylesonanc籠ofthesystemareobtainedNumericalresultsontheinfluencesoflengthClOSSsectiollareaofthebeitexcitationdctuningand

4、dampingonthesystemaI_eanalyzedindetailThefirstapproximatesolutionforamplitudefrequencyresponsecurveoftheprimaryresonanceofthesystemhashardstiffnesscharacteristic；Thesecondapproximatesolutionforamplitudefrequencyresponsea

5、／rveofthe盧噎maIyresonanceofthesystemhassoftstiffnesscharacteristicTheapproximatesolutionof1／21／3subharmonicresoBanceand23superharmonicresonancea∞obtainedNumericalanalysisontheinfluencesofthelengtheros$sectionareaexternale

6、xcitationdetuninganddampingonthesystemiscardedoutBasedonCoriolisaccelerationandLagrangianstrainformulatheuansvel辯vibrationsystemofconvectionbeltsequationgeneralizedisderivedbyNewton’ssecondlawinthispaperThemethodofmultip

7、lescalesisapplieddirectlytothegoverningequationsandapproximatesolutionofprimaryparameterresonanceandtheparametricwiⅡlforcedresonanceofthesystemareobtainedThedetuningparametercrosssectionareaelasticandviscoelasticparamete

8、rsallaxialmovingspeedhasasignificanteffectontheamplitudesofsteadystateresponseandtheirexistenceboundariesThenonlineardiffcremialequationforvibrationanalysisofthebeltdrivermechanismexcitedonthedirectionoflateralandaxialis

9、derivedbymeansofLagrangeequationfunctionThemethodofmultiplescalesisapplieddirectlytothegoverningequationsandapproximatesolutionisobtainedThecharacteristicsofthelateralandaxialvibrationafeobtainedbasedonnumericalmethod11l