Experimental Study of Thin Film Lubrication of Two Circular Discs in Different Sliding/Rolling Ratios
Date Issued
2008
Date
2008
Author(s)
Chan, Ming-Hsiang
Abstract
In order to control the sum of velocities, the sliding-rolling ratios, and the load applied to two circular discs in point contact, this study is to design a tribological tester. Then using this tester, the effect of sliding-rolling ratio on the load carrying capacity of the oil films generated between two disc specimens can be evaluated by the wear conditions of the tested specimens under elastohydrodynamic conditions. The experiment shows that an increase in sliding-rolling ratio caused the specimens to be worn more easily, while the sum of surface velocities and applied load were keep constant. This result means that the load carrying capacity of the oil film decreases as the sliding-rolling ratio between two disc specimens in elliptic contact increases. So far, it lacked the data of friction. Therefore the measurement of friction is important in future work.
Subjects
Tribology
EHL
Thin-film lubrication
Shear-thinning
Limiting shear stress
Type
thesis
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