基于非線性研究的某渦輪起動機齒圈斷裂故障分析.pdf

1、西北工業(yè)大學碩士學位論文基于非線性研究的某渦輪起動機齒圈斷裂故障分析姓名：李阿楠申請學位級別：碩士專業(yè)：機械設計及理論指導教師：王三民20060301Og=【kT業(yè)j、學碩Ij；’逝論文^n洲：州一————————————————_—————————————————————————————————————————————————————’——————————————————————————一AbstractTurbinestartmac

2、hineisaveryimportantcomposingpartforaero—enginethetransmissionofturbinestartmachineisatwo—stagegeartrain，itsdynamicsbehaviolandworkcapabilityisveryimportanttomachineSometurbinestartmachinehaveoccurdmalfunctionbecausethet

3、oothcircleoffluidforcecoincidenceimplementtookplaceruptureduringthestartprocesstherefore，theresearchto01“thetransmissionsystemhaveimportanttheorymeaningandengineerutilityvalueThisdissertationmainlydosomeresearchaimatthet

4、ransmissionsystemoftheturbinestartmachineEstablishedthenon。lineardynamicsmodelofatwo—stagegeartrainwithbacklashebetweenthegearpaironthisbasis，thedynamicscharactcl‘isticresearchofthesystemareperfonnedFirstlyusingthemethod

5、ofconcentratemassthispaperestablishanon—lineardynamicsmodelofatwostagegeartrainwithbacklashebetweenthegearpairandthroughanalysedthedynamicsmodel，thetorsionalmotiondifferentialequationsaregot，onthisbasis，thencalculatethet

6、orsionalmotiondifferentialequationsusingRungeKuttamethod，anddiscusshowtoinfluencethedynamicscharacteristicofsystemwhentheseparameterschagesuchasmeshfrequemcies、stiffnessolthcintermediateshaft、therationofmeshfrequentciesa

7、nddiscusswhenthechaoswitlhappenunderthechange&theseparametersThroughanalysetheresultofatwostagegeartrainwithbacktashebetweenthegearpairincludetimehistory、phaseplanediagram、fourierspectrum、poincaresection，andderivesthedyn

8、amicresponseforfordynamicexcitationConfirmthedynamicloadcoefficientanddynamicloadofthegeartrain，finally，emendatetheintensityoftoothcircleoffluidforcecoincideneeimplement，thecalculateshowthatbecausethesystemresponseischao

9、ticresponse，sothedynamicloadcoefficientistOOlarge，bringonthetoothbendstresssofthefluidforcecoincidenceimplementislargerthantheallowbendstresssthisisthemostlyreasonleadtothetoothofthefluidforcecoincidenceimplementhappenbr

10、eakThroughanalysethecontactstressoftoothandpinuseANSYS，wediscusstheinfectionofmeshpositionandpinanlounttothestressoftoothAddanalysethemanufacturetechnicsoftooth，weeducethatthemanufacturetechnicsisn’teligibilityprickupthe