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速度滑移对液静压轴承油膜微流动影响敏感度

Keywords: 液体静压轴承,速度滑移,微流动,轴承性能,敏感度

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Abstract:

为了使液体静压轴承油膜性能的研究更加准确,基于计算流体力学(computationalfluiddynamics,CFD)和有限差分方法,研究了液体静压轴承间隙油膜微流动的速度滑移现象及其对轴承性能的影响,并定义敏感度物理量对影响程度进行评估.在传统油膜流动假设条件基础上,引入Navier速度滑移边界条件对传统的Reynolds方程进行修正,通过有限元差分方法求解修正后的Reynolds方程,采用梯形积分公式求解轴承承载力等性能参数,对速度滑移影响的轴承性能的敏感度做出定量和定性分析.研究结果表明:油膜压力分布、轴承的承载力、动刚度及油腔流量等轴承性能对速度滑移都有一定的敏感性.最大油腔压力随滑移系数的增加而减小;速度滑移在一定程度上提高了轴承承载能力和油腔流量,但同时降低了轴承动刚度,流量对速度滑移的敏感度最大达到100%.

References

[1]  李战华, 崔海航. 微尺度流动特性[J]. 机械强度, 2001, 23(4): 476-480.
[2]  LI Zhan-hua, CUI Hai-hang. Characteristics of micro scale flow[J]. Journal of Mechanical Strength, 2001, 23(4): 476-480. (in Chinese)
[3]  CHIARA N, DREW R E, ELMAR B, et al. Boundary slip in Newtonian liquids: a review of experimental studies[J]. Reports on Progress in Physics, 2005, 61 (12): 2859-2897.
[4]  OLGA I V. Slippage of water over hydrophobic surfaces[J]. International Journal of Mineral Processing, 1999, 56(1/2/3/4): 31-60.
[5]  张广军, 孟惠荣, 黄平, 等. 润滑剂边界滑移及其对弹流润滑特性的影响[J]. 摩擦学学报, 1998, 18(3): 243-247
[6]  ZHANG Guang-jun, MENG Hui鄄rong, HUANG Ping, et al. The influence of wall slip of lubricants on performance of elastohydrodynamic lubrication in line contacts[J]. Tribology, 1998, 18(3): 243-247. (in Chinese)
[7]  吴承伟, 胡令臣. 界面滑移和油膜破裂[J]. 大连理工大学学报, 1993, 33(2): 172-178.
[8]  WU Cheng-wei, HU Ling-chen. Wall slippage and oil film collapse[J]. Journal of Dalian University of Technology, 1993, 33(2): 172-178. (in Chinese)
[9]  黄平, 雒建斌, 温诗铸. 粘塑性流体的界面滑移对润滑性能的影响研究[J]. 力学学报, 1999, 31(6): 745-752.
[10]  HUANG Ping, LUO Jian-bin, WEN Shi-zhu. Study on influence of the boundary slip of visco-plastic lubricant on the lubrication properties [J]. Acta Mechanica Sinica, 1999, 31(6): 745-752. (in Chinese)
[11]  刘赵淼, 王国斌, 申峰. 基于Navier 滑移的油膜缝隙微流动特性数值分析[J]. 机械工程学报, 2011, 47(21): 104-110.
[12]  LIU Zhao-miao, WANG Guo-bin, SHEN Feng. Numerical analysis of oil film flow in micro gap with Navier slip boundary slip [J]. Journal of Mechanical Engineering, 2011, 47(21): 104-110. (in Chinese)
[13]  FATU A, MASPEYROT P, HAJJAM M. Wall slip effects in (elasto) hydrodynamic journal bearings[J]. Tribology International, 2011, 44(7/8): 868-877.
[14]  RICHARD F S, ALICIA E F. Numerical analysis of slider bearing with a heterogeneous slip/ no-slip surface[J]. Tribology Transactions, 2004, 47(3): 328-334.
[15]  NAVIER C L M H. Memoire sur les lois du mouvement des fluids[J]. Mem I Acad Roy Sci I Inst France, 1823,6: 389-440.
[16]  周桂如, 马冀, 全永昕. 流体润滑理论[M]. 杭州:浙江大学出版社, 1990: 43-61.
[17]  钟洪, 张冠坤. 液体静压动静压轴承设计使用手册[M]. 北京: 电子工业出版社, 2007: 9-10.
[18]  栗心明, 郭峰, 黄柏林. 高压条件下界面滑移长度的定量测量[J]. 摩擦学学报, 2012, 32(1): 34-39.
[19]  LI Xin-ming, GU Feng, HUANG Bai-lin. Quantitative measurement of slip length under high pressure conditions[J]. Tribology, 2012, 32(1): 34-39. (in Chinese)
[20]  FORTIER A E, SALANT R F. Numerical analysis of a journal bearing with a heterogeneous slip/ no-slip surface[J]. Journal of Tribology, 2005, 127(4): 820-825.

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