Relationship between the molecular structure of lubricants and appearance of anomalous film shapes in elastohydrodynamic lubrication conditions

被引：6
|
作者：
Yagi, Kazuyuki [1 ]
Nishida, Kazuki [2 ]
Sugimura, Joichi [3 ]
机构：
[1] Kyushu Univ, Int Inst Carbon Neutral Energy Res I2CNER, Fac Engn, Dept Mech Engn,Nishi Ku, 744 Motooka, Fukuoka 8190395, Japan
[2] Kyushu Univ, Grad Sch Engn, Dept Hydrogen Energy Syst, Nishi Ku, 744 Motooka, Fukuoka 8190395, Japan
[3] Kyushu Univ, Fac Engn, Dept Mech Engn, Int Inst CarbonNeutral Energy Res I2CNER,Nishi Ku, 744 Motooka, Fukuoka 8190395, Japan
来源：
TRIBOLOGY INTERNATIONAL | 2020年 / 152卷
关键词：
Elastohydrodynamic lubrication; Anomalous film shape; Traction; Solidification; TEMPERATURE-MEASUREMENTS; EHL FILM; THICKNESS; PRESSURE; SURFACES; CONTACTS;
D O I：
10.1016/j.triboint.2020.106574
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
This study investigates the relationship between the molecular structure of lubricants and the appearance of anomalous film shapes in elastohydrodynamic lubrication conditions. A ball-on-disc type test rig was used, which produced a point contact area between a rotating glass disc and rotating steel ball. Several pure liquids such as alkanes, alcohols, and others with a single polar site were used as lubricants. Linear chain lubricants caused solid-like behaviour in the film formation, traction coefficient and flow out time of entrapped lubricant in shock loading tests whereas complexly shaped lubricants caused liquid-like behaviour. The clear dependence on lubricant type appears to indicate that the anomalous film shapes formed due to the solidification of the lubricant.
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页数：9
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