燃料电池大客车车身疲劳寿命仿真分析3

2010(32)1AutomotiveEngineering2010(Vol.32)No.1201000233(20070991)2009115,20094211,1,2,1(11,201804;21,261206)[]Matlab,,;,MSC/Fatigue,:;;;ASimulationAnalysisontheFatigueLifeofFuelCellBusBodyGaoYunkai1,LiCui1,CuiLing2&GaoDong111CollegeofAutomotiveEngineering,TongjiUniversity,Shanghai201804;21ShandongTransportVocationalCollege,Weifang261206[Abstract]RoadexcitationloadisgeneratedanditscharacteristicsaretestedusingMatlab,andbycombi2ningwithvehiclemulti2bodydynamicsmodel,theexcitationloadforvehiclebodyfatigueanalysisisobtained.ThedynamicstressesofvehiclebodyarecalculatedbytransienttimedomainapproachandthefatiguelocationsoffuelcellbusbodyareidentifiedwiththeirfatiguelifepredictedbyutilizingsoftwareMSC/Fatigue.Theanalysisprovidesreferencesforstructuredesignandmodification.Keywords:fuelcellbusbody;fatiguelifeprediction;dynamicstressanalysis;multi2bodydynamicmodel,,27%,,,,:,,[1],[2-3],,Matlab,ADAMS,,,NastranMSC/Fa2tigue,[4-6]111182010(32)111111Matlab,,,(1)[7]:Gx(n)=Gx(n0)(n/n0)-w(1):n,m-1,n0;n0,n0=011m-1;Gx(n0)n0,,m2/m-1;w,w=2,,,()nu,n1,Gx(n)=Gx(n0)(n/n0)-wn1nnu0(2)515Hz,1125117Hz,115Hz01720Hz,5080km/h,13182213m/s,,nu=fv=20131811449n1=fv=0172213010314(3)n1,LL:L12nu0135L1n131185(4)L=011m,L=200m,BC[8],,C,Gx(n0)256m2/m-1,Matlab[9]60km/hC,111112C,1C,,[10],(1)2000(16617Hz)N=20,:691077,251338,281207,201803,111139,901271,361048,381764,371321,301053,641020,301266,181377,1211480,571214,1321550,1161820,301248,381629,681864(2)581287(3)(+)(-),,:(+---++----+--+-++--+),(+)(-),10(4),a=0105,[6,15],,X2,Matlab,h=ztest(X,m,s,a)(5):X,m,s,a,h=0,X,h=1,a=0105,(5)11111h=0,2112ADAMS(3)2010(Vol.32)No.1,:92311211ADAMSSFORCE[8],IMPACT,FUNCTION=IMPACT(x,x,x1,k,cmax,d)(6)IMPACT=Max[0,k(x1-x)e-STEP(x,x1-d,cmax,x1,0)3x]xx10xx1(7):x,x,x1,k,e,cmax,d11212,,,,SFORCE,F=CUBSPL(DM,0,SPLINE,0)(8):DMMarker,;SPLINE[11](4),ADAMSSPLINESFORCEIJDM,,,545,,,,,,,:¨t=1/v,l,v[12]11111C,,(),6,102010(32)162211(7),24609,29707,3%Rbe2,,(89),,,78,Rbe3(10)119610Rbe311621221211,[13],,,,4elm14213,elm14224,elm4140,elm13975,4,212,elm14213,0160MPa,,,0100MPa,,,4,:02010(Vol.32)No.1,:11120100MPa,80MPa,,,3,:30MPa,3:0100MPa,,0220MPa,,,,;,;,,;,,21212MSC/Fatigue,Q235(235MPa),,S2N,[14](R=-1),,Gerber,,;,,MSC/Fatigue[15],,,;;(1),13151//km31001066010310310660161157107314102148107496101314()122010(32)115,,,,,,,,,496km,3,,,,,,,,CAE,,[1]HaibaMenmh,BartonDC,BrooksPC.ReviewofLifeAssess2mentTechniquesAppliedtoDynamicallyLoadedAutomotiveCom2ponents[J].ComputersandStructures,2002,80:481-494.[2]SenthilvelVellaichamy.TransientDynamicFatigueAnalysisofAu2tomotiveStructuresUsingProvingGroundRoadProfiles[C].SAEPaper2005-01-0514.[3]GiSeobChoi,HanKiMin,SeungHoonPaik.DynamicStressA2nalysisofVehicleUsingVirtualProvingGroundApproach[C].SAEPaper2000-01-0121.[4],.[J].,2004,15(21).[5],,.[J].,2001(3).[6],.[J].,2007(5).[7].[M].:,2000.[8].[R].,1985.[9],,.[J].,2003(9).[10].[D].:,2004.[11].[D].:,2003.[12].[D].:,2004.[13],,.MSC.Nastran[M].:,2004.[14],,.MSC.Fatigue[M].:,2005.[15].[M].:,2007.