摘要
对具有波动表面的弹流润滑问题建立了数学模型,得到一种普遍的波动表面的点接触非稳态弹流数值算法。以准稳态解为初始条件,逐个周期求出了波动表面的等温牛顿流体弹流润滑的数值解,研究了两接触表面均带横向或纵向粗糙度的等温弹流润滑问题,分析了粗糙峰对压力和膜厚的时变影响,对比了接触表面带不同粗糙度的润滑性能,讨论了幅值和波长对压力和膜厚的影响。结果表明:接触区两表面的粗糙峰的叠加将产生更高的局部压力峰,膜厚变薄,粗糙峰的振幅越大,波长越短,对点接触弹流润滑越不利。
Mathematic model and general numerical solutions of Newtonian transient elastohydro-dynamic lubrication(EHL)of point contacts with surface waviness were developed.Started from a quasi-steady state solution,numerical solutions of isothermal EHL with surface waviness were obtained step by step and period by period,for the two-sided surface waviness composed by both transversely oriented waviness and longitudinal waviness,the transient influence of surface waviness on the pressure and film thickness was analyz...
出处
《润滑与密封》
CAS
CSCD
北大核心
2008年第3期17-20,25,共5页
Lubrication Engineering
基金
国家自然科学基金资助项目(50575108)
青岛市科技发展基金资助项目(05-1-JC-94)
关键词
弹流润滑
波动表面
点接触
时变效应
elastohydrodynamic lubrication
surface waviness
point contact
transient effect
