Study regarding the dynamic loads upon the track at failure of the dampers in the primary suspension of the railway vehicle

6th ModTech International Conference - Modern Technologies in Industrial Engineering

Dumitriu, M.^1 ; Leu, M.^2

Department of Railway Vehicles, University Politehnica of Bucharest, 313 Splaiul Independenei, Bucharest

060042, Romania^1

Eurostar Systems, 268 Calea Rahovei, Bucharest, Romania^2

关键词: Primary suspension;    Pseudo-random functions;    Railway vehicles;    Track elasticity;    Track systems;    Vertical vibrations;    Wheel-rail;    Wheel-rail contact forces;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/400/4/042019/pdf
DOI  :  10.1088/1757-899X/400/4/042019

来源: IOP

【 摘 要 】

This paper investigates the dynamic loads on the track from a two-axle bogie, while considering the particular case of a failure in a damper in the suspension of an axle. To this purpose, a model of the bogie-track system is taken into account, which looks at the track elasticity, the contact of the wheel-rail, and the bounce and pitch vertical vibrations of the bogie. The study relies on the results from numerical simulations concerning the dynamic wheel-rail contact forces, corresponding to one of the wheels, due to the failure in the damper. The dynamic wheel-rail contact forces generated during the running of a bogie on a track with vertical irregularities described by both a harmonic function and a pseudo-random function are being examined.