润滑油中固体颗粒对液体静压滑动轴承油膜承载能力的影响  

Effect on Oil Film Bearing Capacity of Hydrostatic Sliding Bearing by Solid Particles in Lubricant

作　　者：刘乾[1] 朱禹川 万占鸿[2] 肖卿鹤 

机构地区：[1]辽宁科技大学工程训练中心,辽宁鞍山114001 [2]浙江大学船舶与海洋结构物研究所,浙江杭州310058

出　　处：《润滑与密封》2016年第11期83-88,共6页Lubrication Engineering

基　　金：国家自然科学基金项目(10902097);浙江省自然科学基金项目(Y6090257)

摘　　要：基于固液两相流理论,研究在润滑油中悬浮颗粒和空穴现象同时作用下,静压滑动轴承油膜的承载能力变化,得到油膜在固体颗粒和空穴现象作用下的压力分布,并分析颗粒含量与气体溶解率变化对单油孔以及双油孔供油时低速重载滑动轴承油膜承载能力的影响。计算结果表明,增加润滑油中固体颗粒的含量可以提高油膜承载能力,在一定固体颗粒含量下,增加固体颗粒直径也可以提高油膜承载能力,但需同时考虑固体颗粒对流动稳定性的影响;在控制空穴饱和压力一定的情况下,油膜压力场随气体容积率变化很小。The alteration of oil film bearing capacity of hydrostatic sliding bearing under the combined effect of the sus- pended particles in lubricant and the cavitation phenomenon was studied based on the two-phase fluid dynamics.The pres- sure distribution of the oil film under those conditions was obtained.The effect of particles concentration and gas dissolution rate on oil film bearing capacity of low speed and heavy load sliding bearing was analyzed under oil supply ＇by single oil hole or double oil hole.The calculating results show that the oil film bearing capacity can be improved by increasing the solid particle concentration in lubricant or increasing the solid particle diameter under a certain solid particle concentra- tion, but the effect of solid particles on the stability of flow should be taken into consideration at the same time when stud- ying the effect of solid particles on hydrostatic bearing.Under fixed cavitation saturation pressure, the pressure field of oil film has only a little change with the change of gas volume rate.

关 键 词：悬浮颗粒 两相流 滑动轴承 承载能力 

分 类 号：TH117.2[机械工程—机械设计及理论] TH133.3