MODELLING THE GEOMETRIC CONTACT BETWEEN WHEELS AND THE RAILS OF A TRACK WITH HORIZONTAL IRREGULARITY

Abstract

This paper focuses on the geometric model of the wheel-rail contact during a transversaldisplacement of the axle with a direction lateral deviation and lateral displacements of the rails. While applyingthe contact curve method, the relations between the coordinates of the contact points are established, the axlebounce and angle of roll on the one hand and between the rails’ displacements, axle and the lateral deviation ofthe track axle on the other hand. The pertinent numerical results are introduced for the contact between the S78profile wheel and the UIC60 rail, pointing out at the influence of the track gauge upon the geometric conditionsof the wheel-rail contact and the properties of the S 78 profile.

Keywords

• geometrical wheel-rail contact
• contact curve
• wheels-rails contact points