含油軸承潤滑性能的研究.pdf

1、洳≥：j、碩士學(xué)位論文所在學(xué)院扭越皇籃遵蘭猩堂隧ABSTRACTABSTRACTTheporousbearingsareextensivelyusedinmechanicalengineeringandsoonThegoalofthisthesisistostudythelubricationperformancesofporousbearingsThetheoriticalmodels，structuremodels，failuref

2、oHnsoftheporousbearingswerereviewedandanalyzedAnd，theoriticalmodelofporousbearingsandthenumericalsolutionofthelubricationprocessinporousbearingsweredevelopedThusthedistributionsofthepressureandfilmthicknesswiththenewmodi

3、fiedReynoldsequationwerecalculatedoutInfirstchaperthedevelopinghistoryandcurrentsituationoftheoryandstructuremodelsoftheporousbearingsathomeandabroadwerebrieflyreviewed，andthemainfactorswhichinfluencethe1ubricationperfor

4、manceoftheporousbearingsweresummarizedMoreoverfailureformsandmechanismoftheporousbearingswereanalyzedAndthentllecontentsandtheframeofthisresearchthesiswerepresentedIochapter2themathemaficalandphysicalmodelforthelubricati

5、onoftheporousbearingswasestablishedThemathematicalandphysicalmodelincludedmodifiedReynoldsequationviscosityanddensityequationsofthelubricant，filmthicknessequation，loadequmion，whichbasedonthemodificationofDarcylawandthelu

6、bricantwhoseviscosityanddensityarevariablewithhydrodynamicpressureInchapter3，thebasicconcept，theestimateoftruncationerrorconvergence，stabilityofEulermethodindicatedtheconfonnationandabsolutestabilityofRange—Kuttamethodwe

7、reputforwardThebasicideadefinitionandconvergenceofNewton—Raphsonmethodforustosolvetheabovemathetical—physicalmodelwerediscussedInchapter4，differencemethodssuchasGuassiterativemethodandSimpsonintegralmethodwereadoptedtoan

8、alyzethelubricationprocessThenumericalsolutionoftheporousbearingswaspresented，andthemodifiedReynoldsequation，viscosityanddensityequationofthelubricant，filmthicknessequationand1padequationfortheporousbearingswereresolvedT

9、hedistributionsofthepressureandfilmthicknesswereobtainedTheeffectsofthevelocitylpadandthepermeabilityonthedistributionofthepressureandfilmthicknesshavebeenobtainedInchapter5，resultsofthisthesisweresummarized，andthefiarth

10、erresearchdirectionsofthelubricationperformanceofporousbearingswereproposednemaximumhydrodynamicpressureandloadcapacityoftheporousbearingbecomehigherwiththeincreaseoftherotationspeedoftheshaftTheradialIpadhasquiteinfluen

11、cesonthefilmthicknessandhydrodynamicpressureThehydrodynamicpressureishigherastheloadbecomeslargerandtheminimumfilmthicknessreducesatthesametimeThepermeabilityoftheporousbearingshaseffectsonpressuredistributionandfilmthic

12、knessofoils、andthemaximumhv出odynamicpressureandfilmthicknessreduceforlargerpermeabilityfactorThisprojectwassupportedbyacollaborationprojectbetweenPolandandChinagovernments(GrantAM30：034(30—18))Keywords：porousbearings，mat