电动汽车电池箱结构随机振动疲劳分析

0106ChineseJournalofAutomotiveEngineeringWangWenwei1,2ChengYuting1,2JiangWeiyuan1,2LiuZhishan1,21.NationalEngineeringLaboratoryforElectricVehiclesBeijingInstituteofTechnologyBeijing100081China2.CollaborativeInnovationCenterofElectricVehiclesinBeijingBeijing100081ChinaThedesignofelectricvehicleEVbatteryboxesshouldmeetfatigueliferequirementsunderchangeableoperatingconditions.AfiniteelementmodelwasbuiltfortheEVbatterybox,andtheresponsetorandomvibrationwasanalyzedbasedonfrequencydomainmethods.TheMiner'slinearfatiguedamageaccumulationruleandtheS-Ncurveofthematerialswereusedtoanalyzethefatiguelifeofbatterybox,andtheresultshowsthattheoriginalstructurecanmeettherequirementsofrandomvibrationtest.Aneffectivecalculationmethodisproposedforrandomvibrationfatigueanalysisofbatteryboxstructure.randomvibration;fatigueanalysis;finiteelementanalysis;batterybox;electricvehicleMinerS-NU469.72ADOI10.3969/j.issn.20951469.2016.01.022015092320151030512050232014BAG02B02.J.2016611014.WangWenweiChengYutingJiangWeiyuanetal.RandomVibrationFatigueAnalysisofElectricVehicleBatteryBoxJ.ChineseJournalofAutomotiveEngineering2016611014.inChinese6120161Vol.6No.1Jan.20161PowerSpectrumDensityPSD1011MinerS-N1PSD22MinerMiner3Steinberg4SteinbergVonMises1123111223368.3%27.1%4.33%30.27%5121f(x)x-3-2-023Miner6NiiniiDinii1,2,,rD1DD1-1168.3%-2227.1%-334.33%99.73%01263Hypermesh21178377mm12mmbeamRbe2Cweld3238HzSAEJ2380SAEJ23803xyzPSD412331233ANSYS44ANSYSPSD32323zxy1251zxy10293847116f/Hzf/Hz13811562431259350136745014715501572651167375117768521876954197610552077/%a/9.8m/s2t/ht/h11001.90.150.1511000.755.255.421001.90.155.5521000.755.2510.83201.90.1510.953200.755.2516.2601.50.0916.29600.419.035.29601.50.0935.38600.419.054.38601.50.0954.47600.419.073.47601.50.0973.56600.419.092.561013453VonMises6VonMises4PSD5VonMises153VonMises10Hz190HzQ235P-S-N77211112233211PSD22PSD311411511VonMises/MPa13708021.91513707221.88116238321.38316239121.33713708819.02013706419.00816237518.80611572618.63112173418.56616223918.3981.0000.1000.0100.00110100f/Hz/9.8m/s22Hz11000123zxyzxy5VonMisesVonMises3VonMises21.915MPa6SteinbergMiner92.56hT3.332106s3456VonMisesVonMises0146.J.2013322197101.LiuLongtaoLiChuanriChengQietal.RandomVibrationFatigueAnalysisforaStructureJ.JournalofVibrationandShock2013322197101.inChinese.D.2008.QuYunfei.RandomVibrationFatigueAnalysisandStructureOptimizationofGarbageTruck'sCompartmentD.NanjingSoutheastUniversity2008.inChinese.MinerJ.2008154264267.HuiJizhuangSunDeshiZouYake.ApplicationofMinerLinearCumulativeDamageLawinReliabilityTestIntensifyingCoefficientonAutomotiveProvingGroundJ.JournalofEngineeringDesign2008154264267.inChinese.M.1985216222.ZhuangBiaozhongChenNaili.RandomVibrationTheoryandCaseStudyM.BeijingSeismologicalPress1985216222.inChinese.M.20062228.LiShun.MechanicalFatigueandReliabilityDesignM.BeijingSciencePress20062228.inChinese.M.20038286.YaoWeixing.FatigueLifePredictionofStructuresM.BeijingNationalDefenceIndustryPress20038286.inChinese.M.1994.LuHuiminChenYuanyuan.MechanicalEngineeringMaterialPerformanceDataManualM.BeijingChinaMachinePress1994.inChineseLiJunqiuTianHeleiWuPuen.AnalysisofRandomVibrationofPowerBatteryBoxinElectricVehiclesC.ITECAsia-Pacific2014.LEEYLPANJHATHAWAYRetal.FatigueTestingandAnalysisTheoryandPracticeM.LondonELSEVIER2005126132.SAEJ23802009.VibrationTestingofElectricVehicleBatteriesS.USASocietyof[e-mail][e-mail]4MinerS-N7Q235AP-S-N26024022020018016014012010080104105106107108N/MPaP50%P90%P95%P99%P99.9%