철도차량 횡방향 거동에 대한 동특성 해석

Lateral dynamics of a railway vehicle plays a key role to the analysis of stability, derailment, and ride comfort. This paper presents the modeling and analysis of lateral dynamics of a railway vehicle. The equations of motion for lateral dynamics are modeled with 17 degree of freedom, and wheel-rail contact is represented using Polach’s model. The modeled railway vehicle is composed of one car body, two bogies, and four wheelsets, and each component is assumed to be connected using ideal springs and dampers. The obtained model is programmed using MATLAB, and simulation study has been conducted for model verification.