摘要
采用算子分裂法 (Operator- splitting method)求解满足 JFO空泡压力边界条件和全油膜质量连续性的广义雷诺方程 .润滑油膜流动由剪切流动和压力差流动两部分组成 .先采用算子分裂法的迎风差分法求解剪切流动分量 ;再采用质量集中的有限元法求解压力差流动 .结果表明 :由算子分裂法得到的一维滑块轴承数值解与基于 Elord算法的结果一致 .同时还计算了人字型螺旋槽液体润滑轴承的压力分布、承载力和偏位角 .由算子分裂法计算得到的油膜承载力比基于雷诺压力边界条件的承载力偏大 ,而偏位角偏小 .同时还发现 ,在大偏心 (ε≥ 0 .5 )时空泡区的剪切流动对油膜压力有影响 。
An operator splitting method has been used to solve universal Reynolds equation that satisfies global mass conservation over the whole lubrication domain. Thus the shear flow component of a lubrication film is solved by modified upwind finite difference scheme and the pressure gradient flow component solved by finite element method with mass lumping. As a typical example, the numerical solutions of a slide bearing are in good agreement with that in Elrod's work. The numerical load carrying capacity of a herringbone grooved journal bearing is larger, while the attitude angle smaller as compared with the ones predicted by Reynolds cavitations pressure boundary condition in cases of high eccentricities ( ε ≥0.5).
出处
《摩擦学学报》
EI
CAS
CSCD
北大核心
2000年第5期370-373,共4页
Tribology
基金
国家科委攀登预研资助项目! ( PD95 2 190 1)
关键词
广义雷诺方程
螺旋槽径向轴承
算子分裂法
universal Reynolds equation
herringbone grooved journal bearing
operator splitting method
