基于ADAMS的微型汽车前轮定位参数优化设计研究

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1、Y1036057分类号!!!!：丝密级单位代码10618学号04310111墨麽交通戈挚硕士学位论文论文题目：基于ADAMS的微型汽车前轮定位参数优化设计研究ResearchofOptimizationDesignforFrontWheelAlignmentParametersbasedonADAMS研究生姓名：石振国导师姓名、职称：简晓春教授申请学位门类工学专业名称：载运工具运用工程论文答辩日期：2007年4月18日学位授予单位：重庆交通大学答辩委员会主席：胡可钊评阅人：胡可钊2007年4月蒋工亮ABSTR^CTABSTRACT

2、FrontWheelAlignmentParametersarethemostimportantcharactersofautomobile。Therationalityofitsdesignwilldirectlyinfluencethereturnability，straightlinestability，steeringforceandthehigh-waybrakingstabilityofautomobiles．However．thedesigningmethodsdomesticallyusedinfrontwheel

3、alignmentparametersmainlyadoptvari曲1eofparameterandadaptabilitydesign，whichnotonlycostplentyofmanpowerandmaterialresource，butalsoleadtoaninaccurateparameter．Thispaperhasdoneanoptimizationdesigntothefullautomobilemodel，andgivenoutamoreconvenientanddirectsmethodtodeterm

4、inefrontwheelalignmentparameters．Firstly，theinfluenceoffrontwheelalignmentparameterstoautomobile’shandlingstabilityinthepaper．Morespecificdetailslikesuspension，steeringsystemandthedriveformareanalyzedasinfluencestodeterminingfrontwheelalignmentparameters．Then,weanalyz

5、eddrivemomentandbringforwardanoptimizationdesignmethodconcerningtheangleofbothkingpininclinationandcasterofreturnability；wealsoimprovethequantityrelationbetweenkingpininclinationandcasterinself-turningmomentthroughspecificcalculating．Secondly．wemakesomereasonablesimpl

6、ificationstothestructuresofautomobilesandbuildanfullmodelofthiskindofautomobilewhichincludesfrontsuspension，rearsuspension，steering,chassisandtireandaswellastende}greeoffreedom-Kinematicssimulationoffrontsuspensionjumpisstudiedtothiswell—establishedmodel．Fromthis．wepr

7、ogressanevaluationandoptimizationtothechangesoffrontwheelalignmentparametersandwheeldistance．Thesimulationofsteadystaticcircular，returnabilityandsteeringeffortstestbasedon。GB／T6323．4—94～GB／T6323．6-94”fortheful1virtualprototypehasdone，andthensomeweaknessofthevirtualpro

8、totypeonhandlingstabilityhasbeenfound．TheFrontWheelA1ignmentParametersofthevirtualprototypewasABSTIiACToptimizationbasedonth