The State of Adhesion between Rails and Running Wheels on Main Lines (Results Investigated by the Slipping Adhesion Test Truck)

Abstract

Many experiments have been made to clear the true state of adhesion coefficient μ which significantly affects the performance of rolling stock. However, such experiments have been made mainly in laboratory rooms, and the experiments made on main lines have been simply a medley of data only at the spot of wheel slipping. The author employed a “Slipping adhesion test truck” built on a new idea of realizing the measurement of μ continually while running, and observed the true state of μ along the main lines. From the results thus obtained, the author derived the statistically processed μ, and analyzed the relation between μ and the rate of wheel slipping. In addition, the author referred to the various factors that reduced the value of μ. © 1988, The Japan Society of Mechanical Engineers. All rights reserved.