轮胎花纹噪声的发声机理

(430070)[()200082],,,:;,,,,,,6070kmh-1,,,,,,,,1:,[1],,193811,1963,,3,()(,80150Hz)[2],111[1,2],1,Aˆvˆv1,|ˆv1|=|ˆv|,,ˆv2,ˆv2,F,,,,,,,,,N,,[3]515911,,,,,Pb(t)N,112[2,4,,n=1,2,3,(2),c,2l,fn=nc2l,n=1,2,3,(3),,,,fn5Hz2615199919],,,,,,,,[5,6],,,,,,2,,,,,,,,,,,,Ps0(t),Ps(t)=Ps0(t)sin(1)Ps0(t),090,113[5,6],,,,,,(),,114[4],l,4l,fnfn=(2n-1)c4l[58]:(1),,,,,,3:,;,;,,,,,(),3kHz,,,:1015cm,70kmh-1,20ms-1,tt=12(1015)20102=(2.253.75)10-3(s),,,(2)[1,6],,,d,,56dB,,,,,,,,,,3[9]3(1),,,,,,,,,,,180,(),,,,,,,,,,,,,4[9],,,,,,,,,,,,,,,,,,71591,,,5(1),,(2),,1..:,198314142WillettPR.Tiretreadpatternsoundgeneration.TireSci2enceandTechnology,1975,3(4):2522663ParkDH,BatheK.Methodforimprovingtreadnoisebyrel2ativerotationofaribandsimulatingtheeffectthereof.USA,USP4788651.19884..:,199613235HecklM.Tyrenoisegeneration.Wear,1986,113:1511706SchaafK,RonnebergerD.Noiseradiationfromrollingtiressoundamplificationbythehorneffect.Inter2Noise,1982,82(2):1311347,..,1997,44(2):1021118LeeJJ.Structure2bornetirenoisestatisticalenergyanalysismodel.TireScienceandTechnology,1997,25(3):1761869Chenlijun,YangLi.Computerautomaticsynthesizerassess2mentfornoisespectrum.SensorWorld,1996,2(6):351999203230SoundGeneratingMechanismofTireTreadPatternpsNoiseChenLijun,YangLi,QianYeqing,ShiMinandMaHao(WuhanUniversityofTechnology430070)YangGuangda[ShanghaiTireandRubber(Group)Co.,Ltd.200082]AbstractThesoundgeneratingmechanismsofthetiretreadpatternpsnoisewereinvestigatedbasedontheacoustictheoryandtheexperiment.Itwasfoundthatthepatandimpactsoundfromthetreadblocks,thepumpnoisefromthegrooves,theswishsoundfromthesmoothtreadandtheaircol2umnresonancefromthegrooveswerethemainnoiseresources;thenoiseradiationenergybythevibra2tioninthefrontgroundcontactareawasthemoststrong,thatinthecentralgroundcontactareawasthemedium,andthatinthebackgroundcontactareawastheleast.Thetwoexperiencedruleswereproposedbasedonthecomprehensiveanalysis:a)theimpactsoundspectrumofthetreadblockswason2lyrelativetotheirarea,butnottotheirshape;andb)thepumpsoundspectrumofthegrooveswasonlytotheirlength,widthanddirection,butnottotheirdepth.Somenoisegeneratingmechanismsindis2putewerereviewed.Keywordstreadpatterns,noise,soundgeneratingmechanism12718km,1998,12718km,,1998,41%,46%:;:;:2002,(,1999206223)815199919