用振动响应分析提高液压系统的可靠性

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1、沈阳航空工业学院硕士学位论文用振动响应分析提高液压系统的可靠性姓名：徐林林申请学位级别：硕士专业：机械设计及理论指导教师：陈振中20070101沈阳航空，丁业学院硕士学位论文AbstractHydraulicsystemistheimportantconstituentstructureofnavigation，aerospace，ship，trafficandtheengineeringmachine，andisatypicaldynamicforcesupportingsystem，itsworkingqualityandreliabilityplayanimportantroleinth

2、esafeoperatingofthewholeengineeringstructuresystem．Thesimulationtechniquehasbeenwidelyapprovedtobeavaluablemethodindesign，analysisandimprovementofthehydraulicsystem．Somedynamicsimulationsoftwareofhydraulicsystemhavebeendeveloped，butnotwidelybeenusedbecausethehydraulicsimulationsoftwarepackageshaveno

3、goodoperatinginterface，andisdifficulttoiiseexceptthoseprofessionalU船I'S．Fromtheviewoftheapplicationofsimulationsystem，reducingthemodelingtime，improvingthecommunicationbetweenpersonandcomputerandgraphicmodelingtechnologyhavebecomeresearchpointsofsimulationtechnique．Inthisthesis，themathematicmodelingo

4、fhydraulicelementssuchasplungerpump、pipeline、valve、accumulatorandatypicalaircrafthydraulicsystemhavebeenestablishedbasedOilhavingstudiedallkindsofhydraulicsystemsandsimulationsoftwarepackages．Thesoftwarepackagesofhydraulicelements，ahydraulicsystemandcommunicationbetweenelementsandthehydraulicsystemh

5、avebeenprogrammedusingobjectorientedprogramming(ooP)language．Thesoftwarepackagehasgoodcommunicationinterface，iseasyoperating，andhasaupdatingconnection．Bydynamicpropertysimulationofatypicalhydraulicsystem，theflow,pressure，impedance，soundenergydensityandsoundpoweratanyCROSSsectionofthepipesystemarouse

6、dbythenoiseofplungerpumppropagatingthroughpipeshavebeencalculated，andrelatedcurvesbetweenaboveparametersandpumpspeedhavebeengiven,whichapprovesthefightandreliabilityofthesoftwarepackage．Keywords：Hydraulicsystem：Pipesystem；Graphicmodeling；Softwarepackage；TheSimulationⅡ一原创性声明本人郑重声明：所呈交的学位论文是本人在导师的指导下独

7、立完成的。除文中已经注明引用的内容外，本论文不包含其他个人或集体已经发表或撰写过的作品或成果，也不包含本人为获得其他学位而使用过的成果。对本文研究做出重要贡献的个人或集体均已在论文中进行了说明并表示谢意。本声明的法律后果由本人承担。论文作者签名：互可筇限游f月弘日版权授权说明本人授权学校“有权保留送交学位论文的原件，允许学位论文被查阅和借阅，学校可以公布学位论文的全部或部分内容，可以影印、缩印或其