機(jī)械式汽車變速器速比優(yōu)化設(shè)計(jì)及扭轉(zhuǎn)振動(dòng)分析.pdf

1、武漢理工大學(xué)碩士學(xué)位論文機(jī)械式汽車變速器速比優(yōu)化設(shè)計(jì)及扭轉(zhuǎn)振動(dòng)分析姓名：蔡炳炎申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：車輛工程指導(dǎo)教師：林寧20050501亟堡堡三盔堂堡主堂堡堡苧ABSTRACTThetransmissionisakeypartinthedrivelineoftheautomobileThequailtyofdesignwilldirectlyaffecttheactualfunctionofuseAlthoughtherearema

2、nytheoriescanconsultaboutthedesignoftransmissionbutplentyofthemareiustexperientiaIformulaThereisnotagoodkindofcalculationmethodforthedistributionofconcretegearratioTraditionaItheoriesaregenerallyaccordingtoexperienceorth

3、esamekindcartypetodecidethegearraUosofthetransmission0bviouslythereareitsshortages：(1)Thesubjectivityfactorcomparesgreatly，(2)thereisnoakindofvalidevaluationindextoconfirmthequalityofthedesignByanalyzingthemeritandthesho

4、rtageofthetraditionalmethodofthedesignofthegearratios，Inthispassageweputoutanewtransmission’sgearratiosallottingmethod，accordingtothedifferentusingratetoeachgearofthetransmission，Weoptimizethedesignbyusingit，themaximizes

5、oftheactualutilizationrateofenginespower，asthetargetfunctionThenweuseanexample’scalculatingresulttoprovethatitisakindofvaliddesignmethodThedesignofourcountry’stransmissionoftencopytheresembletypeandusethestaticdesignUsin

6、gthismethoddesignwillbringsomeproblemsontheperformance、cost、useetcInordertochangethepresentconditionofthedesigntheinitiaImissionistoinsteadthestaticdesignwiththedynamicdesignThedynamicdesignhassomepurposes(1)tocancelormi

7、nishtheeffectsofthemechanicalvibration、impingementandthenoise(2)tocalmtherunningofthegears(3)toprolongtheservicelifeofthetransmission(4)toenhancetheefficiencyofthetransmission(5)teducethepollutiontotheenvironmentandtheha

8、rmofthehumanbodiesThisarticleanalyzesthevibrationofthegears，usestheLagrangeequationestablishthevibrationofthegears1tincludesthetorsionvibration、thelandscapeorientationvibration、theportraitvibrationThearticlealsopredigest

9、sthetransmission’sshaftandestablishesthemathematicsmodelofthegeartrains，computestheparameters，seekstheinherencefrequencyandtheswingofeachvibrationThevibrationsoftheaxlesalsohavethreeorientations：thetorsionvibration，thela