TY - JOUR
T1 - Relationship between the molecular structure of lubricants and appearance of anomalous film shapes in elastohydrodynamic lubrication conditions
AU - Yagi, Kazuyuki
AU - Nishida, Kazuki
AU - Sugimura, Joichi
N1 - Funding Information:
This work was supported by JSPS KAKENHI Grant number 21686016 , Grant-in-Aid for Young Scientists (A).
Publisher Copyright:
© 2020 Elsevier Ltd
PY - 2020/12
Y1 - 2020/12
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85089395994&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85089395994&partnerID=8YFLogxK
U2 - 10.1016/j.triboint.2020.106574
DO - 10.1016/j.triboint.2020.106574
M3 - Article
AN - SCOPUS:85089395994
SN - 0301-679X
VL - 152
JO - Tribology International
JF - Tribology International
M1 - 106574
ER -