单面界面滑移对阶梯轴承润滑性能的影响研究  

Research of the Effectof Single Interface Slip on the Properties of Ladder Bearing Lubrication

作　　者：李刚[1] 张勇斌[1] 蒋学东[1] 

机构地区：[1]常州大学机械工程学院,江苏常州213016

出　　处：《机械设计与制造》2013年第10期167-170,共4页Machinery Design & Manufacture

基　　金：国家自然科学基金主任基金项目(51145016);常州市科技局应用基础研究项目(CJ20120033)

摘　　要：由界面滑移理论模型可知,在传统阶梯轴承固体和液体交界处,如果界面处应力达到极限剪应力时,润滑剂就会发生界面滑移,此时润滑膜会失效,这将大大降低润滑膜的承载力。因此,很有必要研究界面滑移对轴承润滑性能的影响。考虑润滑油膜在阶梯轴承入口区静止接触表面上滑移而避免润滑油膜在轴承其他表面上滑移,给出了阶梯轴承润滑油膜承载能力和摩擦系数分析结果。算例得出,在一定工况下这种轴承的承载能力因界面滑移而提高,而其摩擦系数却因界面滑移而下降。The hydrodynamic lubrication theory with the boundary slippage indicates that, if the interfacial shear stress exceeds the interfacial shear strength, the boundary slippage may occur and it may result in the lubrication film collapse or even failure. Thus, as an example, it is necessary to explore the effect of the boundary slippage in a hydrodynamic slider bearing. Considering the boundary slippage at the stationary surface in the bearing inlet zone but the ~bsent boundary slippage at other bearing surfaces, it presents the analytical results of the load -carrying capacity and friction coefficient of a hydrodynamic step bearing. Exemplary calculations show that in certain operating conditior~, because of the boundary slippage, the load-carrying capacity of the bearing will be improved but the friction coefficient of the bearing will be reduced.

关 键 词：界面滑移 阶梯轴承 承载能力 摩擦系数 

分 类 号：TH16[机械工程—机械制造及自动化] TH133.3