Title: The importance of kinematics accuracy in modelling the dynamics of rail vehicle moving in a curved track with variable velocity
Authors: Krzysztof Zboinski
Addresses: Faculty of Transport, Transport Infrastructure Department, Warsaw University of Technology, Koszykowa 75, PL-00-662 Warsaw, Poland
Abstract: The paper is devoted to accurate description of kinematics of rail vehicle in its motion along curved track with variable velocity. Failing to do this description properly means inaccurate determination of inertia terms in the dynamical equations of motion. Determining how important are these terms is the paper|s main objective. Simulation results from complete model that includes all inertia terms arising from motion of the track centre-line based reference frames and from incomplete models with such terms selectively omitted are compared. The comparison proved particular significance of the omitted terms for vehicle moving along transition curves with variable velocity.
Keywords: rail vehicle dynamics; curving dynamics; dynamics of relative motion; kinematics accuracy; inertia terms; curved track; transition curves; variable velocity; multibody systems modelling; mathematical modelling; numerical simulation; heavy vehicles; trains; rail vehicles; railways.
International Journal of Heavy Vehicle Systems, 2011 Vol.18 No.4, pp.411 - 446
Received: 08 May 2021
Accepted: 12 May 2021
Published online: 14 Oct 2011 *