资源描述：
《轿车白车身刚度定性仿真与梁截面优化》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。
1、上海交通大学硕士学位论文ABSTRACTwire-framegeometricmodelforBIW.Basedonthiswire-framemodelandthebuildingofthebeamcross-sectionlibrary,thefiniteelementmodeofBIWcanbequicklysetuptoachievethestiffnessevaluationduringtheconceptualdesignphase.Thenthecalculationofbendingstiffnessandtorsi
2、onalstiffnessiscarriedoutbetweenthesimplifiedmodelanddetailedmodel,theresultsindicatethatthedifferenceofvalueswaswithin10%,whichverifiesthattheconceptualsimulationmodelisreasonableandeffectiveness.Secondly,shapeoptimizationtechniquesforthecross-sectionofthin-walledbeam
3、weresystematicallystudiedinthispaper.Throughtheresearchofcross-sectionshapecontrolmethods,scalevectorisfinallychosentobeappliedasthecontroltechniqueforshapeoptimization.Meanwhile,numericalapproximatefunctionsforthesectionpropertiessuchasarea,momentofinertia,andtorsiona
4、lconstantarederivedbyusingtheresponsesurfacemethod.Afterwards,basedonthesensitivityanalysisandthetheoryabove,shapeoptimizationofbeamcross-sectionisappliedinarealcase.Theresultsshowthatbodymasswasdecreasedby3.8%,bendingandtorsionalstiffnesswereincreasedby3.89%and7.12%,w
5、hichachievestheinitialoptimizationofthebeamcross-sectioninconceptualdesignphaseandcanbeaguideforthesubsequentdesign.第IV页上海交通大学硕士学位论文ABSTRACTFinally,thispaperintroducesaself-developedsystemwhichcanrealizeCAEanalysisofBIWstiffnessontheplatformofUGNX.Italsodescribesthetwo
6、keytechnologyinvolvedinthesystemdevelopmentprocess,parameterandmodularorientedsolution,togetherwiththeimplementationofC++programfortherealizationofthesimulationsystem.Meanwhile,thesystemfunctionsandoperationmanualarealsopresentedattheendofthepaper.KEYWORDS:BIW,stiffnes
7、s,qualitativesimulation,thin-walledbeam,cross-sectionoptimization第V页上海交通大学硕士学位论文目录目录第一章绪论...........................................................11.1课题背景.......................................................11.2轿车概念设计CAE技术运用现状...................................21.3
8、薄壁梁截面优化方法的研究现状...................................51.4本文研究内容...................................................8第二章白车身
