摘要
分析了变阶梯结构自适应径向滑动轴承油膜压力的形成机理 ,并建立了二段油膜楔形耦合变阶梯结构的流量控制方程 .采用有限差分法交叉循环迭代求解了油膜压力的雷诺方程和变阶梯结构的流量控制方程 ,比较了设计参数对这种径向滑动轴承的最小油膜厚度、压力分布、承载能力、摩擦阻力等性能和温升的影响 .研究结果表明 :合理地选择设计参数可以使得这种滑动轴承具有较好的润滑性能和承载特性 .
The hydrodynamic lubrication of a newly developed adaptive structure journal bearing with coupling two step films is analyzed theoretically. The flow balance equation is established using an incremental control flow volume to describe the pressure distributions on the variable structure between the coupling two step films. The Reynolds equation and flow balance equation are solved simultaneously by the finite differential method in intercrossing iterative numerical calculations. The influences of operating parameters on the hydrodynamic performances of the bearing such as minimum film thickness, film pressure, load carrying capacity, friction factor, and temperature rise are studied. The results show that the design parameters should be determined rationally to obtain the significant lubrication performance and load carrying characteristics of the bearing.
出处
《摩擦学学报》
EI
CAS
CSCD
北大核心
2000年第3期197-201,共5页
Tribology
基金
国家自然科学基金资助项目! ( 1 9990 51 0 )
关键词
变阶梯结构自适应径向滑动轴承
润滑
油膜压力
adaptive variable structure journal bearing with coupling two step films
flow balance equation of a control incremental volume
variable step structure between coupling two-step films
finite differential method
