液壓模塊式組合半掛車轉(zhuǎn)向系統(tǒng)仿真及結(jié)構(gòu)優(yōu)化設(shè)計(jì).pdf

1、武漢理工大學(xué)碩士學(xué)位論文液壓模塊式組合半掛車轉(zhuǎn)向系統(tǒng)仿真及結(jié)構(gòu)優(yōu)化設(shè)計(jì)姓名：喬媛媛申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：車輛工程指導(dǎo)教師：馬力20090501武漢理工大學(xué)碩士學(xué)位論文AbstractFirstlytheresearchbackgroundofsteeringsystemofhydraulicmodularassembledsemitrailerisintroducedinthisthesisCombiningwiththedevelo

2、pmenttrendofassembledtrailerandtheenterprise’Sactualrequirements，thenecessityandurgencyaswellasthemainpurposeandsignificancesoftheresearcharediscussedInadetailedanalysisofstudystatusesofvehiclesteeringmechanismathomeanda

3、broad，theprincipalcontentsofthisthesisareputforwardThentheoverallstructureandmaintechnicalcharacteristicsofhydraulicmodularassembledtrailerareanalyzedThesplicingformsareintroducedThestructIlrecharacteristicsofsteeringsys

4、tem，steeringrealizingways，thestructureofcenterplateandsteeringboardaswellaslinkages’layoutschangerulesofdifferentsplicingformsarepresentedAfterwards，startingfromAckermannprinciplethetheoreticalsteeringcharacteristicsofmu

5、ltiaxisandallwheelsteeringvehiclesareanalyzedThetheoreticalsteeringangleformulasofassembledsemitrailerwhosebasicsplicingunitis6axlemodule，arederivedThematrixtransformalgorithm，whichCanbeusedtocalculatethepracticalwheelan

6、e#ofavarietyofsplicingformswhenallwheelsteeringisdone，isputforward，andbyusingthisalgorithmeachwheel’Spracticalangleformulaof6axlemoduleisderivedBasedontheaboveworkthegeneraloptimaldesignmathematicalmodelofsteeringmechani

7、smofassembledsemitrailerisgivenOnthebasisofanalyzingstructuralcharacteristicsofsteeringmechanism，modelsimplificationandparametricmodelingarestudiedTakingintoaccounttheworkloadcalculationscaleandcomputingtime，byuseofADAMS

8、parametricmodelingapproachfourtypicalsplicingforms’parametricmodelsareestablishedunderreasonablesimplificationThroughsimulationthedifferencesbetweenactualwheelanglesandtheoreticalanglesareachievedThegeneralobjectivefunct

9、ionexpressionofsteeringmechanismoptimaldesignisproposedTheoptimaldesignmathematicalmodelsofsteeringmechanismoffourtypicalsplicingformsarebuiltUsingthemethodofvariablesreductionandequalityconstraintselimination，whichcombi