Wheel-rail dynamic forces induced by random vertical track irregularities

7th International Conference on Advanced Concepts in Mechanical Engineering

Spiroiu, M.A.^1

Department of Rolling Stock, University POLITEHNICA of Bucharest, Bucharest, Romania^1

关键词: High speed rail;    Primary suspension;    Railway vehicles;    Track irregularity;    Traffic safety;    Undesirable effects;    Unsprung mass;    Vehicle speed;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/147/1/012117/pdf
DOI  :  10.1088/1757-899X/147/1/012117

来源: IOP

【 摘 要 】

The present paper investigates the wheel-rail dynamic forces produced by railway vehicles in motion, which are an important issue especially for the high-speed rail transport from the point of view of traffic safety, ride quality and undesirable effects on vehicles, on track and on the land in the vicinity of railways. The research is carried out on a model which includes track system, vehicle unsprung mass, vehicle primary suspension and the bogie sprung mass. The wheel-rail dynamic overloads are evaluated assuming random vertical irregularities of the track. The estimation of wheel-rail dynamic forces is made for a range of vehicle speeds up to 300 km/h and the influence of track and vehicle various parameters is investigated.