汽車復合材料制動缸的研究.pdf

1、北京工商大學碩士學位論文汽車復合材料制動缸的研究姓名：鄭家杰申請學位級別：碩士專業(yè)：機械設計及理論指導教師：張力孟春玲20060601北京工商大學碩士學位論文AbstractToadapttotheneedofthedevelopmentthatautomobileproductswillbelighten，low—cost，longlife，thetrendofcompositematerialsreplacingtraditiona

2、lmetalmaterialsismoreandmorevisibleNowhomemadelightandminisizecarsandwagonsemploythebrakesystemofoilpressure，andSOthedemandofautomobilebrakecylindersandcylinderpistonsisconsiderableInthispaperonthebasicofthestudyofmateri

3、aldesignandmoldingtechnics，theauthorfinishedmoulddesignandmanufacturedcompositematerialbrakecylinderspecimen，andalsofinishedfiniteelementstaticanalysis，modalanalysisandmodaltrialformetalbrakecylinderandcompositebrakecyli

4、ndersrespectivelyFirstlythesearchtookthemetalbrakecylinderavailableasasubject，hasdonetheworkofmaterialdesignandmoldingtechnics，contrivedthethreecompositedirectionsforproducingthebrakecylinderanddesignedandmanufacturedthe

5、cylindermould，manufacturedthecylinderlspecimenofcompositeswiththemouldInthepartofstaticFEMstudyestablishedthefiniteelementanalysismodelofthecylinder，andrespectivelytookonstaticanalysiswiththemodelofthemetalandcompositeso

6、fthreedifferentkinds，workedoutthedisplacement，stressandstrainfieldofthecylinderundertheworkingconditions，previdingtheusefuldataforthedesign，manufactureandavailabilityofthecompositecylindeqmeanwhileprovidingthetheoretical

7、basisforthefurtherresearchofcompositecylinderInthepartofmodalanalysis，theauthortookrespectivelythemodalexperimentalmeansandmodalanalyticmeansofFEMtOcarrythroughthemodalanalysisThenaturalfrequencies，dampingsandmodalshapes

8、werecalculatedBycomparison，itcouldbeconcludedthatthenaturalfrequenciesofcompositecylinderswerelowerthanthatofthemetalcylinderbutthedampingwerehigherthanthelaterSOthecompositecylindershavethecapabilityofvibrationabsorptio