王爱华-白车身扭转刚度对整车操控性能的影响.

白车身扭转和横向刚度对整车操控性能的影响姓名：王爱华学号：31503082参考文献HariKrishnanM,NSreeraj,CBhaskar,GNagarajuandRMugundaram，MarutiSuzukiIndia,Ltd.“EstablishingCorrelationbetweenTorsionalandLateralStiffnessParametersofBIWandVehicleHandlingPerformance,”SAETechnicalPaper2011-01-0089,2011,doi:10.4271/2011-01-0089扭转刚度扭转工况下车身抵抗变形的能力CorneringPassingsteps扭转刚度的意义静态或动态扭转工况下车上部件不受影响，比如车门可以整车开关，密封依然良好等。整车的操控性，NVH，耐撞性，耐久性等。Asaresultofmanyearlierstudies,itisknownthatincreaseinstiffnessofthevehiclebodyimprovesthehandlingofthevehicle.But,therehasbeennoattemptmadetopredicthowmuchimprovementinhandlingoccursforaparticularincreaseinbodystiffness.Processflow仿真&实验主观评价&客观测试大胆的假设，小心的求证。NEWBILITYCAE(TorsionalStiffness)Load&BoundaryStrainEnergyContourCAE(TorsionalStiffness)IterationsdoneinCAECAE(LateralStiffness)Load&BoundaryStrainEnergyContourCAE(LateralStiffness)FABRICATIONSFABRICATIONS控制变量法EffectofincreaseintorsionalstiffnessonlateralstiffnessSininputtestAnopen-looptestmethodfordeterminingthetransientresponsebehaviorofroadvehiclesISO/TR872580kmphinastraightlineRangeof−30degto+30deg,0.5HzExperttestdriversSubjectiveevaluation-Torsionalstiffnesseffect扭转刚度小大Objectiveevaluation-TorsionalstiffnesseffectCorrelationofTorsionalstiffnessYawgainincreasesby1.77%andtimelagdecreasesby4.12%with10%increaseinbodytorsionalstiffness.Subjectiveevaluation-LateralstiffnesseffectObjectiveevaluation-LateralstiffnesseffectCorrelationofLateralstiffnessYawgainincreasesby2.41%andtimelagdecreasesby4.57%with10%increaseinbodylateralstiffness.ValidationBIWtorsionalstiffnessincreasedby29%SubjectiveevaluationValidationmodelTorsionalstiffnessConclusionOverallresponseofthevehiclehasimprovedduetotheincreaseintorsionalstiffnessoftheBIW.Theincreaseinlateralstiffnessofthefrontlowerarmattachmentpointsleadstosignificantimprovementinoverallvehicleresponsebutnomuchchangeisthereinthereturn-abilityofthevehicle.Reason提高扭转刚度提高前后轮同步性提高操控性提高横向刚度提高左右轮同步性讨论测量扭转刚度时，载荷为什么加到避震器安装点上？对于这类悬挂布置这种测试方法是否还有意义？这种方法是不是更通用？谢谢