Abstract
Frictional resistance of a rotating steel cone in contact with the inner edge of a steel cylinder is theoretically investigated on the basis of the classical law of friction proposed by Amonton and Coulomb. The derived formula for the frictional moment was applied to the analysis of experimental data from two types of compression test with eccentricities. The test by an actuator machine with high compression showed that the theoretical solution is practically admissible for the prediction of frictional moment except the cone of a sharp apex due to the radial deformation of the cylinder edge. The other test by an eccentrically suspended sand bucket with low compression showed that the friction coefficient has almost the same value irrespective of the cone angle as well as the cylinder diameter, which suggests that the simple theory works well for the prediction of the frictional rotation resistance of the socket connection.
