Numerical Simulation of Wagons Impact

Abstract

Impact of wagons and change in moving tempo cause very intensive longitudinal forces and accelerations that affect the stress-strain state of the supporting structures of wagons. The magnitudes of impact loads can be such to constitute a risk to the support structure, and therefore for passengers and cargo. This paper is focused on an accurate analysis of the impact of two wagons. The analytical formulation of wagons impact is established and equations are solved numerically. The obtained results are compared with results of experimental testing of wagons impact. Comparative analysis of numerical and experimental results has shown satisfactory agreement. In that way, the formed analytical model can be used for determining the dynamic parameters of the impact in the design of new wagons.