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AbstractTherain-flowcountingmethodisdiscussedinthispaper.Basedontheloadingspectraofavehicleobtainedfromastandardtestgroundtesting,amethodisproposedfortreatingtheactualmeasureddataforloadhistories.Theexamplesofthecompressionandextrapolationofloadingspectrabasedonrain-flowcountingaregiven,wherethetimescaleisreducedremarkably.Thendifferentroadsinthetestgroundarecombinedtosimulatethecustomerroad.Thisresearchcanpavethewayforroadsimulationinafurtherstep.Keywordsvehiclereliability;rain-flowcountingmethod;loadingspectra;stochasticload-spectrum0,、。,。、、。,,-[1]。[2]。,[3]。-,。,、、,-,。:。,,,,,,。,,[2]。,。、、-。-,,,,,,[4]。,,,、、。,,、。;;;U467A1000-7857(2009)03-0067-071,2,2,11.,3001612.,300161ApplicationofRain-flowCountingMethodintheAnalysisofLoadSpectrum:2008-11-21:,,:zxpzxp007@163.com;(),,,:jd_cn1955@yahoo.com.cnZHAOXiaopeng1,JIANGDing2,ZHANGQiang2,ZHUXianmin11.DepartmentofAutomobileEngineering,AcademyofMilitaryTransportation,Tianjin300161,China2.InstituteofMilitaryTransportation,Tianjin300161,China(Articles)2009,27(3)671,。“”,2050M.MatsuiskiT.Endo-,,-。,。,。,()(),。-90°,,,,。1.1。1)90°,1[5]。,。,,。2),;,。3),[5]。4),,,[5]。5)[5]。-。,,-、。1.2。,,2。2,。,,。,、。、、、、、(、、3)、、。,、,。2.11(、、)、(、、)、、、、。2、、、、、。3、、、、、、、。、、。。LMSSCADASSCM05LMSTest.Lab。、,5000km,,1024Hz,、-、-。、、、-3。1Fig.1Rain-flowcountingmethod2Fig.2Procedureofrain-flowcountingmethod(Articles)682009,27(3)4Fig.4Load-timehistorycomparison2.2,、-、、,,。,,,。,35。,。,,50Hz。,,。,、、4,5,6。3、、、Fig.3Load-timehistoryofrearwheelsoncobbleroad(Articles)2009,27(3)696(a)(b)Fig.6Rain-flowmatricesbefore(a)andafter(b)lowpass(a)(b)3、、3.1-,-,,,,,50%[6]。,,Rossow。,,50%。,15,,,。,,。,,iYi,YmYm=1nni=1ΣYin。,Y′i=Yi-Ym。,,,[6]。3.2()。,80%,20km/h-,2g,,7,8,9。5Fig.5Frequencydomaincomparison(Articles)702009,27(3)9Fig.9Damagecomparison3.3、(),(),,,。80%,20km/h-,1010,11。,、,,[Xi]=[xi1,xi2,…,xin]T(1),,,8Fig.8Load-timehistorycomparison7(a)(b)-Fig.7Rain-flowmatricesbefore(a)andafter(b)RainEdit(a)(b)(Articles)2009,27(3)7112Fig.12Cumulativedamageaftersuperposition(blueline)andcomparisonwithoriginalcumulativedamage(redandgreenlines)ni=1ΣAi[Xi]=[Y](2)xi1,xi2,…,xini,1,2,…,n[7]。m,m。Aii。80%,20km/h,-10,-3,50%:50%12。,13。1110Fig.11Cumulativecyclecountcomparison(a)(b)1010(a)(b)Fig.10Rain-flowmatricesbefore(a)andafter10timesextrapolation(b)(Articles)722009,27(3)4、、,。,300,、。、,,、、,,。。(References)[1].[D].:,2006.LiPeng.Researchonenhancementtestcoefficientforautomobileprovingground[D].Jilin:CollegeofAutomobileEngineering,JilinUniversity,2006.[2],.[J].,2003,2(4):4-7.ZhouJiaze,GuanChangsheng.JournalofXiangfanVocationalandTechnicalCollege,2003,2(4):4-7.[3],,.[J].,2006,34(3):95-97.WangHongwei,XingBo,LuoHongyun.Mining&ProcessingEquipment,2006,34(3):95-97.[4],,.[J].,2002,24(4):343-347.XiaoShengfa,ZuoWeiwei,ShenDeping.AutomotiveEngineering,2002,24(4):343-347.[5],,.[J].,2004,24(3):38-40.DongLeyi,LuoJun,ChengLi.AviationMetrology&MeasurementTechnology,2004,24(3):38-40.[6],,.[J].,2004,18(1):6-9,16.PengWei,JinXiaoxiong,SunShiwei.JournalofShanghaiUniversityofEngineeringScience,2004,18(1):6-9,16.[7]EnsorDF..[J].,1998,9(11):24-26.EnsorDF.LinXiaobintrans.ChinaMechanicalEngineering,1998,9(11):24-26.()13Fig.13Load-timehistoryaftersuperpositioncomparedwithoriginalsignals!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!《》“”“”《》“”,,、,、、、、、、、。,。2100,,、、、、。:;:chenguangren@cast.org.cn。(Articles)2009,27(3)73
本文标题:雨流计数法在整车载荷谱分析中的应用_赵晓鹏
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