Investigation of the influence of an intermediate adapter on the dynamic load of a supporting structure of a platform wagon

Abstract

This article is focused on a presentation of the results of the theoretical justification of the use of an intermediate adapter placed between the main supporting structure of a platform wagon and the cargo. Such a decision will contribute to reducing the vertical load of both the supporting structure of a platform wagon and ensuring the safety of the cargo transported on it. The mathematical modelling of the vertical load of a platform wagon supporting structure when moving along the joint unevenness of the track was carried out to substantiate the use of the designed intermediate adapter. In this regard, a corresponding mathematical model was created. There is taken into account an oscillating system consisting of four bodies: the platform wagon supporting structure, two bogies (the 18–100 model) and the cargo. At the same time, the cargo is considered up to the full carrying capacity of the platform wagon. The track is considered elastic-viscous. The mathematical model was solved in the MathCad software. The initial conditions (displacement and velocities) are set to be close to zero. The results of the solution established that the accelerations acting on the platform wagon supporting structure are reduced by 8.4 % compared to those acting on the typical structure without the designed intermediate adapter. The acceleration acting on the cargo placed on the platform wagon frame is 11.9 % lower in comparison with the standard load perception scheme.