金标_某客车AMT选换档电机支架总成模态分析

Altair2009HyperWorksAMT/-1-Altair2009HyperWorksAMT/ModalAnalysisforRackofAMTGear-Selecting/ShiftingMotorofaBusAMT/HyperMeshRADIOSSHyperMeshRADIOSSAbstract:InordertoanalyzethedynamiccharacteristicsoftherackofAMTgear-selecting/shiftingmotor,theFEAmodelwascreatedbyHyperMesh.ThemodalanalysiswascompletedwiththesolverRADIOSS.Atthesametime,thetestforthemodalanalysiswasalsocompletedtovalidatethesimulation.BasedontheFEAresult,animprovedproposalwasputforward,toassurethesecurityandreliability,whichmeetingtherequirementsofstructuredesign.Keywords:ModalAnalysis,HyperMesh,RADIOSS1AMTNVHAMT/HyperWorksAMT-2-Altair2009HyperWorks22.1{}]F[]K[]C[]M[...=+⎭⎬⎫⎩⎨⎧+⎭⎬⎫⎩⎨⎧δδδ……………………1[M]——[K][C]-0]M[]K[2=−ω0]M[]K[=−λ……………………22ωλ={}n,1,2,i0,]MK[iiL==−φλ……………………3n-[K]iλ——iiφ——inn321ωωωωL≤≤≤…………………………42.2HyperMesh243666945413cbar1-3-Altair2009HyperWorks12.32180.68Hz97.08Hz110.03Hz-4-Altair2009HyperWorks21HzHz180.68774.8%297.08--3110.03--280.68Hz1-3Hz1-30Hz11Hz50-80km/h150km/h21Hzτ60nifF1=………………………………………5n——r/mi——τ——1420-30%τ60inkF1max…………………………………6k——1.21.32800r/min111.96121.29Hz1-5-Altair2009HyperWorks33.1Y3X:77Hz4Y:129Hz,77Hz5Z:144Hz,128Hz77HzY6X:129Hz,107Hz,77Hz7Y:129Hz,77Hz8Z:129Hz,105Hz,77Hz-6-Altair2009HyperWorksYXZXYZ3.2/9103.377.0Hz77.0Hz77Hz//75Hz77Hz80.68Hz4.8%411-7-Altair2009HyperWorks116.79Hz138.7Hz165.28Hz1121Hz2Hz3Hz80.6897.08110.03116.79138.7165.2845%43%50%80.68Hz116.79Hz45%2343%50%-8-Altair2009HyperWorks5(1)80Hz(2)/(3)116.79Hz(4)6[1]..CAE.[2]...[3]...1998.[4].MSC.Nastran.2009MSC.Software.-9-