1996 Volume 62 Issue 597 Pages 1697-1705
By using the corrugation formatting and developing model we successfully fixed the formatting and developing mechanism of rail corrugation on curved track. The frequency of corrugation is governed by the vertical dynamic system of the wheelset including the contact stiffness between rail and wheel, but not by the torsional dynamic system of the wheelset. From the simulation results we find that, (1) reducing the wheelset mass and static wheel load, (2) increasing the radius difference between inside/outside wheels in curving, the damping of axle suspension and axle torsional stiffness, are useful means to reduce corrugation. However, reducing axle suspension stiffness has almost no influence on the reduction of corrugation, because the contact stiffness between rail and wheel is much greater than the suspension stiffness.