An Experimental Evaluation of the Hamrock and Dowson Minimum Film Thickness Equation for Fully Flooded EHD Point Contacts
1981 ◽
Vol 103
(2)
◽
pp. 284-294
◽
Keyword(s):
Fifty-seven measurements of the minimum lubricant film thickness separating the elastohydrodynamically lubricated point contact of a steel crowned roller and a flat sapphire disk were made by an optical interferometry technique. The data collected were used to evaluate the Hamrock and Dowson minimum EHD film thickness model over a practical range of contact ellipticity ratio where the major axis of the contact ellipse is aligned both parallel and perpendicular to the direction of motion. A statistical analysis of the measured film thickness data showed that the experimental data averaged 30 percent greater film thickness than the Hamrock and Dowson model predicts.
1974 ◽
Vol 96
(3)
◽
pp. 464-469
◽
2017 ◽
Vol 232
(11)
◽
pp. 2088-2102
◽
1982 ◽
Vol 104
(3)
◽
pp. 365-375
◽
Keyword(s):
2021 ◽