THE EXPERIMENTAL ANALYSIS OF THE MEANDERING PHENOMENON GENERATED AT A RAILWAY WAGON.

During running, the railway vehicles are subjected to external excitation generating vibrations. These vibrations have a negative impact on the quality of travel, can endanger road safety. Vertical and transverse unevenness of the track and its discontinuities are the main source of vibration from railway vehicles. Another source of vibration is the rolling stock defects such as eccentricity and flatness tread. At the above are added increased speed of movement and increased payload, elements which have imposed the need to describe in a more rigorous way the complex phenomena that occur at the interaction vehicle-runway, vehicle response to irregularities path, implications in improving vehicle stability and comfort. Mathematical modeling by random processes of the excitation induced by the path irregularities and dynamic response generated by the vehicle in motion, allows a more accurate description of the interdependence between vehicle vibration and statistical, also spectral properties of path irregularities. This method was used in the dynamics of railway vehicles in the last period, being facilitated by the expansion theory of random vibration and the continuous improvement of equipment, methods of measurement and analysis vibrating mesh that occur in the process of rolling. In the present study we analyzed the phenomenon experimentally. The experimental analysis is based on measuring and machining vibrations measured on a railway wagon by a research team from the Institute of Solid Mechanics. [ABSTRACT FROM AUTHOR]