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1、西安理工大學(xué)碩士學(xué)位論文widthself-actinggas-lubricatedjoumalbearing-rigidJeffcottrotorsystem,andtherigidrotorsystem謝tIlgyroscopicsupportedbythreeaxialgroovesgas—lubricatedjournalbearingareinvestigatedbytheorbitdiagram,Poincar6map,timeseriesdiagram,frequencyspectrumdiagramandbifurcationdiagram.(4)Thenonlineardy
2、namiccharacteristicsofthefixed-tiltingpadsgas-lubricatedjoumalbearingareanalyzedbytheassemblymethod.Thefeasibilityoftheabovemethodsandthecorrectnessofthecalculationcodesarevalidated.Theeffectsofpivotratioandpreloadcoefficientonthenonlineardynamiccbaractcristicsofthefixed-tiltingpadsgas-lubricatedjo
3、urnalbeating-rotorsystemalestudied.‘一、ThisstudyCanprovidethetheoreticalreferences∞thenonlineardynamicanalysisoftherotorsystemsurpportedbyself-actinggas一1ubricatedjournalbeating,andCandirecttheproductdesignofthepracticalfixed—tiltingpadself-actinggas—lubricatedjournalbearing。rotorsystem·Keywords:Sel
4、f-actinggasbearingRotorDifferentialtransformmethodiNonlinearBifurcation_l_●I-____I--_-l--_●●_-l_-_____●-_____●-__-l_____●___一meworkissupportedbyNationalKeyBasicResearch勰dDevelopmentProgramofChina(GrantNo·2007cB707706),NationalNaturalScienceFoundationofChina(GrmutNo.51075327),OpenProjectofStateKe’yL
5、aboratoryofMechanicalTransmission(GrantNo.SKLMT-KFKT-201011),Natural’ScienceFoundationofSh踟xiProvinceofChina(GrantNos.2009JQ7006,2007E203)andNaturalScienceFoundationofEducationDepartmentofShaanxiProvinceofChina(GrantNos.09JK680,07JK340).II瀨。--m◇。弼?!?””?!?、’11”。1:。j’∥’?!?‘”’“’。。沁薜目錄1.緒論??????????????
6、???.?????一.o...o.oo...oo.oo??????????????·l1.1課題研究的背景和意義??.皇:???..茹?????????????????11.2國(guó)內(nèi)外氣體軸承的研究現(xiàn)狀??????????????????????21.3論文研究的主要內(nèi)容?????????????????????????32.動(dòng)壓氣體軸承非線性氣膜力的計(jì)算??????????????????.???.52.1可壓縮氣體動(dòng)壓潤(rùn)滑的Reynolds方程??????????????????52.1.1氣體動(dòng)力潤(rùn)滑的基本Reynolds方程????????????????。52.1.2動(dòng)壓氣體潤(rùn)滑Re
7、ynolds方程的無量綱形式?????????????..72.2動(dòng)壓氣體潤(rùn)滑Reynolds方程求解的微分變換法??????????????82.2.1微分變換法的定義????????????????????????82.2.2微分變換法的運(yùn)算法則??????????????????????82.3動(dòng)壓氣體軸承的氣膜壓力分布和非線性氣膜力?????????.??O.O....OqD092.3一動(dòng)壓氣體潤(rùn)滑R