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 Wysłany: Sob 0:42, 20 Lis 2010 Temat postu: ugg schuhe Helical Gears Thermal EHL theory _2069 |
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Helical Gears Thermal EHL theory
THERMAIELASToHYDRoDYNA Ⅳ Ⅱ CLUBIUCATIoNFoRHELICALGEARSYANGPingYANGPeiran (SchoolofMechanicalEngineering,ugg boots sale, QingdaoTechnologicalUniversity,ugg boots deutschland, Qingdao266033) Abstract: Theinstantaneousthermalelastohydrodynamiclub-rication (EHL) ofthemeshofapairofhelicalgearsissimu-latedbythepseudo-steadystatethermalEHLoftwotaperedrollersinoppositeorientationapproximately. Thebehaviorofpseudo-steadystatethermalEHLisinvestigatedbymultilevelmethodandsequentialsweepingmethod. Itisfoundfromthenumericalresultsthat, firstly, pressure, filmthickness, tem-peratureofthefilmandgearssurfacesaredifferentatdifferentpositionsonthemeshinglineofthehelicalgears, especiallythedistributionoftemperature. Thelowesttemperatureriseisnearlyzero, howeverthehighestCanexceed100Kinthecon-tactarea. Thatiecausethatthedistributionsofpressureandfilmthicknessdependstronglyonthedistributionoftheequivalentradiusinthedirectionoftherollerlength,uggs kopen, andthedistributionoftemperaturedependsStrO ~ Iglyonthelocalslide / rollratiointhedirectionoftherollerlength. Secondly,MBT schuhe, thehighpressuresandtemperaturesintheendsCanbedecreasedbytheendmodifications, butthepressureandtemperaturetherearestillhigherthanthoseinthemiddle, andthefilmthick-nessestherearesmallerthanthatinthemiddle. TheplaceinwhichthepressureandtemperatureishighandthefilmisthiniscorrespondingtotheplacewherepiningandscoringaremostlikelytoOCCur. Keywords: HelicalgearsThermalelastohydrodynamiclubricationTaperedrollersOppositeorientationPseudo-steadystate Author: Yang Ping, female, born in 1979, teaching assistant. Lubrication is mainly engaged in the research. E-maihyangping6662003 @ yahoo. tom. cn
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