Citation

Kravets VV, Kravets TV. Int. Appl. Math. 2008; 44(1): 101-109.

Copyright

(Copyright © 2008, Holtzbrinck Springer Nature Publishing Group)

DOI

10.1007/s10778-008-0024-3

PMID

unavailable

Abstract

The dynamic load on the wheelset of a high-speed railroad vehicle on a track with local irregularities is determined. A block-matrix formula is given to analyze the inertial forces and moments generated during lurching along a spatial trajectory on a track with vertical and horizontal curvature. The local irregularities of the track are measured with well-known methods and means for controlling the geometry of railtracks such as inertial laser-gyro strapdown systems. Given a railtrack trajectory, a hodograph of wheelset motion is plotted versus dimensionless time and the geometrical parameters are reduced to typical dimensions. The formulas and hodograph are used to calculate the kinematical parameters needed to evaluate the dynamic load. The results obtained allow correct quantitative description of wheelset-rail interaction and resolution of one of the traffic safety issues for high-speed railroads