Wheel-Rail Contact Point Calculation of Flexible Wheelset Base on Wheel-Rail Contact Line Method
Elastic deformation of wheelset should be considered for wheelset dynamic research. In this article, a new wheel-rail contact point searching algorithm that can be used for flexible wheelset simulation was developed based on wheel-rail contact line method. For given position and deformation of wheelset, normal vectors of a point on each rolling circle and its project on rail were calculated to find out possible contact point, which formed wheel-rail contact line. The final contact point was determined by minimum vertical distance of contact line and rail section profile. Rigid-flexible coupling dynamic equations of single wheelset were established and dynamic simulation was executed. The impact of wheelset deformation on wheel-rail contact position and creepage were discussed. Comparison of rigid and flexible wheelset results show that the new method gets more accurate contact point position.
Paul P. Lin and Chunliang Zhang
H. Gao and H. Y. Dai, "Wheel-Rail Contact Point Calculation of Flexible Wheelset Base on Wheel-Rail Contact Line Method", Applied Mechanics and Materials, Vols. 105-107, pp. 1284-1288, 2012