Analysis on the Applicability Domain of the Linear Models During Study of the Lateral Dynamic Behaviour of the Railway Vehicles

Abstract

The use of the linear models for the study in the dynamic behaviour of the railway vehicles provides quality information regarding a series of basic phenomena of the vehicle dynamics. This paper intends to set forth the running conditions for which the linear models can be utilized during the simulations regarding the lateral dynamic behaviour of the railway vehicles. This action relies on analyses that compare the results of the numerical simulations developed on the linear model of the vehicle with the ones corresponding to the non-linear model, which considers various characteristics of the track in correlation with the velocity regime. A good analogy is emphasized between the compared units, namely the lateral accelerations calculated in three reference points -at the carbody centre and above the bogies.