氢燃料电池轿车的后悬架设计摘要随着社会的发展进步，汽车已经成为了很多家庭的必备品，氢燃料电池汽车也逐渐走入大众视野，汽车在全世界开始变得普及，人们对于汽车舒适性的需求也越来越高。汽车悬架影响着舒适性等行驶性能，一般来讲，汽车悬架由减振器、弹性元件和导向元件组成，起着连接车轮与车身的作用，并能传递各种行驶路况下汽车与地面间的力和力矩，使汽车拥有良好的舒适性与行驶稳定性。我设计的目标是完成氢燃料电池轿车的后悬架设计；且本次设计选择了丰田Mirai2014款作为初步的车型选择，在充分分析了各种悬架的结构特点和优缺点，又对比了目前氢燃料电池轿车常用的后悬架类型后，选择了扭力梁式悬架作为本次的悬架结构。本次设计需要完成后悬架的选型、性能参数的选取、对各元件的设计计算以及校核，并通过计算机软件对后悬架进行建模，之后用ADAMS对已经设计得后悬架系统进行分析，使其拥有良好的性能。关键i司：后悬架；扭力梁式悬架；弹性元件；减振器；导向元件IIAbstractWiththedevelopmentofeconomyandtechnology,carshaveenteredthousandsofhouseholds,andhydrogenfuelcellvehicleshavegraduallyenteredthepublicvision.Whenthecariswidelyusedintheworld,peoplehavehigherandhigherrequirementsforcarcomfort.Automobilesuspensionaffectsthedrivingperformancesuchascomfort.Generallyspeaking,automobilesuspensioniscomposedofshockabsorber,elasticelementandguidingelement,whichplaystheroleofconnectingwheelandbody.Andthesuspensionsystemcantransmittheforceandmomentbetweenthevehicleandthegroundunderkindsofdrivingconditions,sothattheautomobilehasgoodcomfortanddrivingstability.Thegoalofthisdesignistodesigntherearsuspensionofhydrogenfuelcellcar.Inthisdesign,ToyotaMirai2014isselectedasthepreliminarymodelselection.Afterfullyanalyzingthestructuralcharacteristics,advantagesanddisadvantagesofvarioussuspensions,andcomparingthecommonlyusedrearsuspensiontypesofhydrogenfuelcellcars,torsionbeamsuspensionisselectedasthesuspensionstructure.Thisdesignneedstocompletetheselectionofrearsuspension,theselectionofperformanceparameters,thedesigncalculationandverificationofeachcomponent,andmodeltherearsuspensionthroughcomputersoftware,thenuseAdamstoanalyzethedesignedrearsuspensionsystem,sothatithasgoodperformance.Keywords：rearsuspension;torsionbeamsuspension;elasticelement;shockabsorber;guideelementhi目录第1章绪论..................................................................................................................................................11.1悬架设计的背景和意义.....................................................