철도차량의 곡선주행시에 발생하는 차륜 불안정성 해석

초록

Unstable vibrations of railway vehicle wheels generate the curve squeal noise in tight curve. This squeal noise has to be reduced in order to increase the service quality of railway system by eliminating the main factors that make the wheel unstable. In this paper, main parameters which affect the stability of railway vehicle wheel are introduced and the stability analysis is carried out using those parameters in frequency domain. Time domain analysis is also performed. In the time domain analysis, using a conventional Korean subway vehicle model, transient time response of a wheel is analyzed when the vehicle is running in curved track. Finally, the results are compared and discussed.