摘要车架工作状态比较复杂，无法用简单的数学方法对其进行准确的分析计算，而采用有限元方法可以对车架的静动态特性进行较为准确的分析，从而使车架设计从经验设计进入到科学设计阶段。首先确定轻型货车的总体布置形式，在此基础上选择各总成的相关参数。然后初选车架横、纵梁的尺寸参数，运用材料力学对车架进行强度与刚度校核。经过优化完成对车架的结构设计。其次，运用Pro/E软件建立车架三维模型。在满足结构力学特征的前提下，对车架结构进行了保留主要承载横梁的简化。最后，使用有限元分析软件ANSYS12.0从弯曲和扭转两大方向对车架进行强度、刚度分析。结合车架工作实际，对其进行了满载、前侧偏载、单侧偏载和单侧扭转、双侧扭转等工况的分析及对比，保证了车架结构满足实际使用要求。关键词：车架；Pro/E；ANSYS；强度；刚度IABSTRACTInaddition,theworkconditionofcarriercarisextremelybad,andstressconditionisalsocomplex,itisunabletousesimplemathematicalmethodforaccurateanalysisofthecalculation,andthefiniteelementmethodcanbeusedtoanalyzethestaticanddynamicperformanceoftheframemoreaccurately,sothatthedesignofframewillgofromtheexperiencedesignintothescientificdesignstage.Firstly,theoveralllayoutofLGVisdetermined,onthisbasis,selectedparametersofeveryassembly.Thenbeamsandstringers’dimensionsoftheframeareselected,thestrengthandstiffnessontheframearecheckedbyMechanicsofMaterials.Afterall,theframeisdesignedafterfeedback.Secondly,the3DmodeliscreatedusedPro/E.Infaithfulofthestructure’smechanicalcharacteristics,itisnecessarytosimplifythegeometry.Finally,ontwodirectionsofthebendingandthereversetoanalyzethestrengthandstiffnessontheframeusedANSYS12.0.Withtheframe’sactualworkcharacteristics,theframeisanalyzedunderthefull,thefrontsideofthepartialload,theunilateralpartialloadandtheunilateralreverse,thereversesidesconditions,guaranteetheframestructuremeetthemechanicalrequirements.Keywords：Frame;Pro/E;ANASYS;Strength;StiffneII目录摘要·····················································································································IAbstract···············································································································II第1章绪论·····································································································11.1研究的目的和意义···········································································11.2研究背景·······················································································31.3车架有限元法国内外研究现状····························································41.4主要设计内容·················································································6第2章车架结构方案的选择·········································································72...
