Frictional and Vibratory Behavior of Rolling and Sliding Contacts,

摘要

Experimental investigations of the influence of rolling velocity,normal load and high-frequency normal vibrations on the traction/slip characteristics of rolling discs are described. Major findings are: measured creep coefficients are systematically lower by a factor of two to three than theoretically predicted ones,given this discrepancy (which remains unexplained),the creep coefficients are insensitive to rolling velocity or normal vibrations,the rolling friction coefficient ('adhesion') is insensitive to normal vibrations and rolling velocity,for reasonably clean surfaces, (however,high rolling velocities tend to centrifuge contaminants onto the rolling surfaces from the sides of the discs),and traction does not decrease with increasing slip in the region of large slip,for reasonably clean surfaces. (Author)