Boundary element method of hydrodynamic characteristics of lubricant in three-leaf dislocated floating-ring bearing
Boundary element method of hydrodynamic characteristics of lubricant in three-leaf dislocated floating-ring bearing
-
摘要: The problem of hydrodynamics of the three-leaf dislocated floating-ring bearing was studied by means of boundary element method. The law including the distribution of pressure on boundary surface (axial, bearing and floating-ring) and its friction loss in different eccentricities was obtained. The results show that the inner friction of three-leaf dislocated bearing increases from 390.875 to 1091.65, and the inner friction of three-leaf dislocated floating-ring bearing increases from 94.2523 to 114.5069 with eccentricity varying from 0 to 0.075 in nondimensional. So changing the pressure and flow field of bearing by adding floating-ring is more stability and less wasted work of friction than three-leaf dislocated bearing.Abstract: The problem of hydrodynamics of the three-leaf dislocated floating-ring bearing was studied by means of boundary element method. The law including the distribution of pressure on boundary surface (axial, bearing and floating-ring) and its friction loss in different eccentricities was obtained. The results show that the inner friction of three-leaf dislocated bearing increases from 390.875 to 1091.65, and the inner friction of three-leaf dislocated floating-ring bearing increases from 94.2523 to 114.5069 with eccentricity varying from 0 to 0.075 in nondimensional. So changing the pressure and flow field of bearing by adding floating-ring is more stability and less wasted work of friction than three-leaf dislocated bearing.
-
[1] SHEN Guangyan, XIAO Zhonghui, ZHENG Tiesheng, et al.Nonlinear dynamic behaviors of an imbalance rotor on multi-lobe bearings[J].Journal of Aerospace Power, 2004, 19(5):604-609.(in Chinese) [2] WANG Ligang, CAO Dengqing, WANG Jinlin, et al.Stability and bifurcation of elliptic bearing-rotor systems[J].Journal of Aerospace Power, 2008, 23(2):263-269.(in Chinese) [3] XIANG Jianhua, ZOU Linfeng, LIAO Ridong.Influence of circularity errors of the journal on the lubrication performance of sliding bearings[J].Transactions of Beijing Institute of Technology, 2012, 32(12):1241-1246.(in Chinese) [4] WANG Yongliang, LIU Zhanqiang, QIAN Dashuai, et al.Approximate analytical model of oil-film force for finite length elliptical journal bearing[J].Journal of Aerospace Power, 2012, 27(2):265-274.(in Chinese) [5] YANG Dequan, HAN Qingshu.Numerical method of flow dynamics characteristics of lubricant in dislocated bearing[M]//LIN Jiaqiao.Some new trends on fluid mechanics and theoretical physics.Beijing:Peking University Press, 1993:399-400.(in Chinese) [6] CHEN Zifang, ZHANG Hang.The application of dislocated bearing on gas fan[J].China Plant Engineering, 2002(4):40-41.(in Chinese) [7] LIU Baoxing, ZHOU Dayuan.The calculation of hydrodynamic dislocated bearing performance[J].Heilongjiang Science and Technology of Water Conservancy, 2005, 33(1):10-11.(in Chinese) [8] Li C H, Rohde S M.On the steady and dynamic performance characteristics of floating-ring bearing[J].Journal of Lubrication Technology, 1981, 103(3):389-397. [9] Li C H.Dynamics of rotor bearing systems supported by floating-ring bearing[J].Journal of Lubrication Technology, 1982, 104(4):467-477. [10] CHI Changqing, ZHAO Pizhi.Performance of floating ring journal bearings[J].Journal of Beijing University of Aeronautics and Astronautics, 1990(2):103-109.(in Chinese) [11] SONG Yin, LI Xuesong, GU Chunwei.CFD analysis of the load capacity and oil feeding characteristics of floating bush bearings with bush rotation being considered[J].Journal of Engineering Thermophysics, 2010, 31(6):951-954.(in Chinese) [12] Clarke D M, Fall C, Hayden G N, et al.A steady-state model of a floating ring bearing including thermal effects[J].Journal of Tribology, 1992, 114(1):141-149. [13] Koeneke C E, Tanaka M, Motoi H.Axial oil film rupture in high speed bearings due to the effect of the centrifugal force[J].Journal of Tribology, 1995, 117(3):394-398. [14] Hatakenaka K, Tanaka M, Suzuki K.A theoretical analysis of floating bush journal bearing with axial oil film rupture being considered[J].Journal of Tribology, 2002, 124(3):494-505. [15] Hatakenaka K, Yanai H.Stability in high-speed floating bush journal bearings at low supplied pressure:Part 1 effect of oil groove and holes into inner oil film and slope at bush inner side end on stability[J].Journal of Japanese Society of Tribologists, 2008, 53(8):536-543. [16] YANG Jinfu, CHEN Ce, YUAN Ping, et al.Research on nonlinear fluid-solid interaction dynamic lubrication in floating ring bearings[J].Journal of Aerospace Power, 2009, 24(2):365-370.(in Chinese) [17] XING Pengling, YANG Dequan, LÜ Shuhui.The effect of properties of bearing force with variance of floating ring transformation velocity[J].Journal of Inner Mongolia University for Nationalities, 2004, 19(3):257-260.(in Chinese) [18] YANG Dequan.Theory and application of boundary element method[M].Beijing:Beijing Institute of Technology Press, 2002.(in Chinese) [19] DI Qinghua.Boundary element[M].Oxford:Pergamon Press, 1986. [20] HUANG Minghan, YANG Dequan.Research for flow dynamic chracteristics of the three-leaf dislocated bearing[J].Journal of Inner Mongolia University for Nationalities, 2005, 20(3):252-254.(in Chinese)
点击查看大图
计量
- 文章访问数: 1025
- HTML浏览量: 1
- PDF量: 811
- 被引次数: 0