The paper deals with the numerical analysis of the general model of vehicle oscillations considering the non-stationarity of random excitation. The model parameters of the applied railway vehicle are deterministic functions. The non-stationary random function will be modeled by the variable speed of the vehicle and the vertical unevenness of the track. The so-called evolutionary Gaussian random process will be considering. The proposed comparative study of the dynamics of the vertical motion of the analyzed railway vehicle will be realized using Monte Carlo simulation and a numerical procedure based on the theory of Markov processes.

This work was supported by KEGA project No. 001ŽU-4/2020 and KEGA project No. 054ŽU-4/2021.