基于变密度法的悬架控制臂多目标拓扑优化设计与疲劳寿命-分析

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1、西安理工大学硕士学位毕业论文Finally,thefatiguelifeoftheoptimizedsuspensioncontrolarmsisforecastedanditsfatiguestrengthisalsocheckedbycombiningstressmethodS-NcurvesandFatiguemoduleintheHyperWorks(HW)software.Overall,therevisedmodelnotonlyhasasmallmass,butalsothestiffnessandtheinhere

2、ntfrequencyarealsoimprovedbycomparingwiththeprimitivemodel.Andthelifespanofthesuspensioncontrolarmspredictedfromtheoptimizationisabout1.66million,whichmeetsthedemandsforthelifespanofthesuspensioncontrolarms.Therefore,therationalityofthemulti-objectivetopologyoptimizat

3、ioniscertificated.Keywords:suspensioncontrolarms,multi-objective,topologyoptimizationvariabledensitymethod,fatiguelifespanII万方数据目录目录1绪论..................................................................................................................................11.

4、1论文研究背景与研究意义.....................................................................................11.2车辆零部件结构优化国内外研究进展.................................................................21.3变密度法的国内外研究进展......................................................................

5、...........31.4疲劳寿命研究的国内外研究现状.........................................................................41.5本文的主要研究内容.............................................................................................62有限元分析软件及求解器基本原理...........................................

6、.....................................92.1Hyperworks分析软件介绍.....................................................................................92.2HyperMesh所支持格式与软件优势....................................................................102.3RADIOSS求解器的优势与分析流程............

7、.....................................................112.4OptiStruct求解器优化流程和理论......................................................................122.4.1OptiStruct的内部优化流程.......................................................................132.4.2OptiStruct的寻优策略...

8、............................................................................142.4.3OptiStruct的灵敏度分析.........................