转子偏斜角不对中对滑动轴承系统运行稳定性的影响  

Influence of Misaligned Deflection Angle on Operation Stability of Hydrodynamic Journal Bearing Systems

作　　者：葛原珲 徐武彬[1] 李冰[1] 魏晋鹏 GE Yuan-hui;XU Wu-bin;LI Bing;WEI Jin-peng(School of Mechanical Engineering,Guangxi University of Science and Technology,Guangxi Liuzhou 545006,China)

机构地区：[1]广西科技大学机械工程学院,广西柳州545006

出　　处：《机械设计与制造》2021年第2期277-281,285,共6页Machinery Design & Manufacture

基　　金：国家自然科学基金资助项目(51265004);广西科技计划项目(桂科AC16380032);柳州科学研究与技术开发计划项目(2017BC20201);柳州科学研究与技术开发计划项目(2016C050202);广西高等教育本科教学改革工程项目(2016JGZ139)。

摘　　要：为了进一步了解转子偏斜角误差对滑动轴承系统运行稳定性的影响,建立了带有转子偏斜角误差的滑动轴承系统动力学模型,研究了不同程度的转子偏斜角误差对滑动轴承油膜厚度分布、油膜压力场的分布、系统承载能力、工作运行稳定性以及轴颈摩擦功率损耗的影响。其结果表明,转子偏斜角误差的存在将会对油膜厚度分布和油膜压力场分布产生显著的影响;滑动轴承系统的承载能力因转子偏斜角误差的存在而呈现出增大的趋势;当偏心率<0.6时,轴承系统的运行稳定性将会随着转子偏斜角误差的增大而降低;而当偏心率<0.65时,偏斜角误差的增加对稳定状态下轴承系统中轴颈摩擦功率损耗的减小起到了促进的作用,当>0.65时,该摩擦功率损耗则随着偏斜角误差的增加而明显增加。In order to explore the influence of deflection angular error to the operation stability of hydrodynamic journal bearing systems,a dynamic model of hydrodynamic journal bearing system with the deflection angular error is set up.The influence of different degrees of deflection angular error to the oil film thickness distribution,the oil firm pressure distribution,the carrying capacity,the operation stability and the friction power loss of the bearing system are investigated.The results show that the existence of deflection angular error will have a significant overall impact on the oil film thickness distribution and oil film pressure distribution.The existence of deflection agular error will make the carring capacity augmented of the bearing system.When<0.6 the operation stability of the bearing system will be reduced with the deflection agular error increased.When<0.65 the friction power loss in a steady state of the bearing sytem will be reduced with the increase of deflection agular error.The friction power loss will be improved with the deflection agular error increased when>0.65.

关 键 词：转子偏斜角误差 滑动轴承系统 运行稳定性 承载能力 

分 类 号：TH16[机械工程—机械制造及自动化] TH161