基于單供氣孔靜壓氣體球軸承潤滑機理及承載性能研究.pdf

1、武漢科技大學碩士學位論文基于單供氣孔靜壓氣體球軸承潤滑機理及承載性能研究姓名：楊國文申請學位級別：碩士專業(yè)：機械制造及自動化指導教師：高全杰郭良斌20100508第1I頁武漢科技大學碩士學位論文AbstractWiththedevelopmentofscienceandtechnologythegaslubricatedbearingscomeintowidelyusingInthefieldsofprecisionandultrapr

2、ecisionmachininghighspeed，foodprocessingandnowmorepopularmicro—motors，theairbearingwillhaveaverywiderangeofapplicationsHoweverthestudyontheperformanceofthegas—lubricatedbearingevolvesandperformancetestingWasveryslowlywhi

3、chgreatlyrestrictsthepromotionandapplicationofairbearingsNowwiththeemergenceofdedicatedanalysissoRwareandhi曲一performancecomputers，theycouldsolvenonlinearequationsinbearingdesignandsimulateparametersofthebearingItprovides

4、aneffectivewayInthispaperthenumericalanalysismentionedaboveandit’sexperimentmethodsareparticularlypresentedFirst，InthispapersphericalhydrostaticgasbearingwhitoneinherentcompensationsupplyholeWasanexample，establishingmode

5、lequationsUsedtheReynold’SgasequationitWasderived，loadcapacityW：gasmassflowmandstiffnessKItWasdifferencemethodthatsolvedReynoldsequationcalculations，byjoiningtheboundaryconditionsThroughMatlabprogramming，solvedoutofthega

6、spressuredistributionacrossthemembraneSecond，thegasbearingmodelWasbuildedinGAMBmthenwassimulatedbythesoftwareofFLUENTbychangingtheparametersandgasbeatingstructureparameters，intheendgettingthestraightforwardbearingperform

7、ancegraphicsTheycouldhelpdesignersintuitiveunderstandingofthesegraphics，enhancingbeatingdesignlevelThenbyprocessingtheresultsofsoftwaresimulation，gettingthestraightforwardbearingperformancegraphicsBycomparingtheresultsof

8、processeddataofsimulationandnumericalsolution，gottheresultsthattheywereverysimilar，whichshowedthatweuseddifferencemethodinsolveinggasReynoldsequationcorrectlyFinalllyusingtherelativemovementtheoryIdesignedameasureairbear

9、ingpressureofthemembranearoundthedeviceandloadingdeviceThestructurehassomecharacteristices，suchassimple，highreliabilityandconvenientmeasurementKeywords：aerostaticbearing；gaslubricated；difference；stiffness：staticcharacter