Abstract
The friction coefficient, tread block deformation, and fluid pressure of rubber specimens at the contact interface between them and a glass plate under glycerol lubrication with different end-face corner radii of the tread blocks were experimentally measured. The friction coefficient increased as the end-face corner radius decreased. The tread blocks were deformed due to friction, and a negative fluid pressure formed at the contact interface. The friction coefficient was positively correlated with the resultant normal force of the normal load and the fluid force. Therefore, controlling the fluid pressure by changing tread blocks’ end-face corner radius will enhance their friction under lubrication.
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