计入浮环径向温度梯度的浮环轴承润滑性能
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摘要
以浮环轴承为研究对象,计入浮环径向温度梯度,建立了浮环轴承分布温度模型和内膜-浮环-外膜热量传递模型。研究了浮环径向温度梯度对浮环轴承润滑性能的影响规律。结果表明:浮环轴承径向温度梯度对浮环轴承的润滑性能有显著影响,计入浮环径向温度梯度时,浮环轴承内膜温度增加,总摩擦功耗和总端泄流量略有减小;与浮环轴承内层间隙为0.02mm时相比,内层间隙为0.04mm时,内膜温度和总摩擦功耗分别减少了16.0%和15.9%;总摩擦功耗随内圆半径的增大而增加,适当减小浮环轴承的内圆宽度可以改善浮环轴承的润滑性能。
The temperature model and heat transfer model among inner-film-floating-ring-outer-film of floating ring bearing were established,in which the temperature gradient of the floating ring was taken into consideration.The effect of the temperature gradient on the lubrication performance of the floating ring bearing was discussed.Results show that,taking the radial temperature gradient of the floating ring into consideration,the inner-film temperature increases,the overall frictional power loss and end discharging capacity slightly decrease.With outer eccentricity ratio of 0.4,when the inner film clearance increases from 0.02 mm to 0.04 mm,the inner film temperature and total power loss are decreased by 16.0% and 15.9%,respectively.The total power loss increases with the inner circle radius.The lubrication performance of the floating ring bearing can be improved remarkably by appropriately decreasing the inner circle width.
The temperature model and heat transfer model among inner-film-floating-ring-outer-film of floating ring bearing were established,in which the temperature gradient of the floating ring was taken into consideration.The effect of the temperature gradient on the lubrication performance of the floating ring bearing was discussed.Results show that,taking the radial temperature gradient of the floating ring into consideration,the inner-film temperature increases,the overall frictional power loss and end discharging capacity slightly decrease.With outer eccentricity ratio of 0.4,when the inner film clearance increases from 0.02 mm to 0.04 mm,the inner film temperature and total power loss are decreased by 16.0% and 15.9%,respectively.The total power loss increases with the inner circle radius.The lubrication performance of the floating ring bearing can be improved remarkably by appropriately decreasing the inner circle width.
引文
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[15]Soni S,Vakharia D P.A steady-state performance analysis of a non-circular cylindrical floating ring journal bearing[J].Journal of Engineering Tribology,2016,231(1):1-16.
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[17]王鸷,任兴民,张引娣,等.浮环轴承旋转流体的基本研究[J].西北工业大学学报,2010,28(4):520-524.Wang Zhi,Ren Xing-min,Zhang Yin-di,et al.Exploring further basic flow of rotating floating ring bearing[J].Journal of Nothweastern Polytechnical University,2010,28(4):520-524.
[18]郭红,张绍林,门日秀,等.涡轮增压器浮环轴承静特性分析[J].润滑与密封,2013,38(11):81-85.Guo Hong,Zhang Shao-lin,Men Ri-xiu,et al.Static characteristics analysis of turbocharger floating ring bearing[J].Lubrication Engineering,2013,38(11):81-85.
[19]张浩,师占群,张顺心,等.基于质量守恒边界条件的浮环轴承贫油润滑特性理论分析[J].机械工程学报,2014,50(9):100-107.Zhang Hao,Shi Zhan-qun,Zhang Shun-xin,et al.A theoretical investigation on staved lubricating characteristics of the floating ring bearing based on jacobsson-floberg-olsson boundary condition[J].Journal of Mechanical Engineering,2014,50(9):100-107.
[20]郑惠萍,代静,彭立强.气穴对涡轮增压器浮环轴承油膜力的影响[J].润滑与密封,2015,40(7):60-64.Zheng Hui-ping,Dai Jing,Peng Li-qiang.Influence of cavitations on floating ring bearing oil film force of turbocharger[J].Lubircation Engineering,2015,40(7):60-64.
[21]Sun Jun,Deng Mei,Fu Yong-hong,et al.Thermohydrodynamic lubrication analysis of misaligned plain journal bearing with rough surface[J].ASME Journal of Tribology,2010,132(1):111-118.
[22]孙军.曲轴-轴承系统摩擦学、刚度和强度的耦合研究[D].合肥:合肥工业大学机械与汽车工程学院,2005.Sun Jun.Coupling research on tribology,stiffness and strength of crankshaft-bearing system[D].Heifei:College of Mechanical and Automotive Engineering,Hefei University of Technology,2005.
[2]Trippett R J.Measured and predicted friction in floating ring bearings[C]∥SAE Paper,860075.
[3]Clarke D M,Fall C,Hayden G N,et al.A steadystate model of a floating ring bearing,including thermal effects[J].ASME Journal of Tribology,1992,114(1):141-149.
[4]Chun S M.A parametric study on bubble lubrication of high-speed journal bearings[J].Tribology International,2002,35(1):1-13.
[5]Chun S M.Thermohydrodynamic lubrication analysis of high-speed journal bearing considering variable density and variable specific heat[J].Tribology International,2004,37(2):405-413.
[6]Chun S M.Aeration effects on the performance of a turbocharger journal bearing[J].Tribology International,2008,41(4):296-306.
[7]Andres L S,Kerth J.Thermal effects on the performance of floating ring bearings for turbochargers[J].Journal of Engineering Tribology,2004,218(5):1-14.
[8]Andres L S,Gjika K G,Larue G.Rotordynamics of small turbochargers supported on floating ring bearings-highlights in bearing analysis and experimental validation[J].Journal of Tribology,2007,129(2):391-397.
[9]Andres L S,Barbarie V C,Bhattacharya A,et al.On the effects of thermal energy transport to the performance of(Semi)floating ring bearing systems for automotive turbochargers[J].Journal of Engineering for Gas Turbings and Power,2012,134(10):1-10.
[10]Holt C,Andres L S,Sahay S,et al.Test response and nonlinear analysis of a turbocharger supported on floating ring bearings[J].Journal of Vibration and Acoustics,2005,127(2):107-115.
[11]Li J Q,Ni J M,Wang Q W.Lubrication analysis floating ring bearing considering floating ring heat transfer[J].SAE International Journal of Fuels and Lubricants,2016,9(1):14-22.
[12]Pei Shi-yuan,Xu Hua,Yun Meng,et al.Effects of surface texture on the lubrication performance of the floating ring bearing[J].Tribology International,2016,102:143-153.
[13]于晓东,付旭,刘丹,等.环形腔多油垫静压推力轴承热变形[J].吉林大学学报:工学版,2015,45(2):460-465.Yu Xiao-dong,Fu Xu,Liu Dan,et al.Thermal deformation of annular recess multi-pad hydrostatic thrust bearing[J].Journal of Jilin University(Engineering and Technology Edition),2015,45(2):460-465.
[14]Chasalevris A.Finite length floating ring bearings:operational characteristics using analytical methods[J].Tribology International,2016,94:571-590.
[15]Soni S,Vakharia D P.A steady-state performance analysis of a non-circular cylindrical floating ring journal bearing[J].Journal of Engineering Tribology,2016,231(1):1-16.
[16]李鹏举,岑少起,郭红.浮环质量对动静压浮环轴承稳定性的影响[J].煤矿机械,2009,30(6):77-79.Li Peng-ju,Cen Shao-qi,Guo Hong.Influence of mass of floating ring to stability of hybird floating ring bearing[J].Coal Mine Machinery,2009,30(6):77-79.
[17]王鸷,任兴民,张引娣,等.浮环轴承旋转流体的基本研究[J].西北工业大学学报,2010,28(4):520-524.Wang Zhi,Ren Xing-min,Zhang Yin-di,et al.Exploring further basic flow of rotating floating ring bearing[J].Journal of Nothweastern Polytechnical University,2010,28(4):520-524.
[18]郭红,张绍林,门日秀,等.涡轮增压器浮环轴承静特性分析[J].润滑与密封,2013,38(11):81-85.Guo Hong,Zhang Shao-lin,Men Ri-xiu,et al.Static characteristics analysis of turbocharger floating ring bearing[J].Lubrication Engineering,2013,38(11):81-85.
[19]张浩,师占群,张顺心,等.基于质量守恒边界条件的浮环轴承贫油润滑特性理论分析[J].机械工程学报,2014,50(9):100-107.Zhang Hao,Shi Zhan-qun,Zhang Shun-xin,et al.A theoretical investigation on staved lubricating characteristics of the floating ring bearing based on jacobsson-floberg-olsson boundary condition[J].Journal of Mechanical Engineering,2014,50(9):100-107.
[20]郑惠萍,代静,彭立强.气穴对涡轮增压器浮环轴承油膜力的影响[J].润滑与密封,2015,40(7):60-64.Zheng Hui-ping,Dai Jing,Peng Li-qiang.Influence of cavitations on floating ring bearing oil film force of turbocharger[J].Lubircation Engineering,2015,40(7):60-64.
[21]Sun Jun,Deng Mei,Fu Yong-hong,et al.Thermohydrodynamic lubrication analysis of misaligned plain journal bearing with rough surface[J].ASME Journal of Tribology,2010,132(1):111-118.
[22]孙军.曲轴-轴承系统摩擦学、刚度和强度的耦合研究[D].合肥:合肥工业大学机械与汽车工程学院,2005.Sun Jun.Coupling research on tribology,stiffness and strength of crankshaft-bearing system[D].Heifei:College of Mechanical and Automotive Engineering,Hefei University of Technology,2005.