Selected studies of dynamics of railway flat-car used for transport of semi-triler truck (TIR)

The paper presents a pilot analysis of the dynamics of a railway wagon designed for transporting road semi-trailer trucks. Attention was given to the innovative solution of the wagon construction, having a movable platform enabling transportation of road vehicles as a part of intermodal transport. The technical description presented in the article takes into account the provisions of Patent No. 214797, for the invention under the name "Railway transport wagon, railway transport unit and railway transport system containing such wagon". The work presents the concept of technical characteristics of the wagon construction solution and a simulation model was built using in-house software. The technical parameters were analyzed, followed by pilot simulation tests. This paper presents the results of research on the dynamics of the platform wagon, loaded with a typical road semi-trailer truck. The system's eigenvalues were analyzed, allowing for the initial assessment of dynamic phenomena occurring in the conditions of exploitation of the loaded wagon. The tests are of pilot nature and constitute a prelude to carry out complex simulation analyzes including tests of dynamics while running on transition curves, arcs, and wear of the rolling surfaces of wheels and rails at different traffic speeds.