%0 Journal Article
%T Tribological Characteristics of Porous Bearings under Micro-load Ⅱ. Experimental Study of Friction<br>微载荷含油轴承摩擦性能研究Ⅱ.摩擦试验分析
%A Zygmunt Rymuz
%A Zbigniew Kusznierewicz
%A ZHANG Jian-zhong
%A WANG Jiu-gen
%A MA Jia-ju
%A Zygmunt Rymuz
%A Zbigniew Kusznierewicz
%A <br>张建忠
%A 汪久根
%A 马家驹
%J 摩擦学学报
%D 2006
%I 
%X Performance and tribological character of journal porous bearings under micro-load were studied.The test results were obtained with wavelet signal process.Results show that instantaneous friction coefficient does not keep constant even under steady exterior micro-load due to tribo-structure and manufacture error,and it varies with operation condition such as type of lubricants,rotation speed of shaft,exterior load and oil starvation state.Under micro-load state and with shaft rotation speed 600,1%~2% volume ratio of liquid crystal to 46~# machinery oil yields the lowest friction coefficient.The friction coefficient shows a parabola curve of low-high-low with the shaft rotate speed rising form 600~3 000.Instantaneous friction coefficient shows a tendency of high-low-stable with the increase of exterior load from 0.5 to 10.Compared with starved lubrication,the flood lubrication displays a higher friction coefficient.Mixed lubrication may result in unsteady state as shaft rotation speed is higher than 1 500~2 400.
%K micro-load
%K porous bearings
%K liquid crystal additives
%K instantaneous friction coefficient
%K stick-slip<br>微载荷
%K 含油轴承
%K 液晶添加剂
%K 瞬态摩擦系数
%K 粘滑振荡
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=5D344E2AD54D14F8&jid=2F467A5C6371C830162AAA01D7DAD07A&aid=DF84E186278DBDC8&yid=37904DC365DD7266&vid=96C778EE049EE47D&iid=94C357A881DFC066&sid=7D1E6EEC2019967D&eid=F18BA6286A889C1C&journal_id=1004-0595&journal_name=摩擦学学报&referenced_num=0&reference_num=13