차륜/레일의 비선형 접촉 특성을 고려한 철도차량의 주행안정성 해석

초록

In wheel-rail contact, several nonlinearities are inculded such as a saturation of creep force, nonlinearity of creepage, nonlinearity of friction and adhesion coefficients, and so on. Some nonlinearity affects the running stability of a railway vehicle. Therefore, the influence of the nonlinearities on the railway vehicle dynamics should be investigated. This paper describes a nonliner dynamic analysis of a railway vehicle to evaluate the running stability. The effects of the nonlinear creepage and creep force, and the nonlinear friction and adhesion coefficient are also estimated