IDENTIFICATION OF THE DYNAMIC PARAMETERS OF A SPECIALIZED VEHICLE UNDER UNEVEN LOADING OF ITS BODY

Abstract

This work presents a study of oscillatory processes occurring as a result of the operation of freight vehicles loaded with bulk cargo. The rapid growth of cargo transportation, focused mainly on the transportation of grain from the field to storage places or to ports, is the main share in the percentage ratio in the transportation of similar types of cargo. Public roads, especially those where there is active traffic without the possibility and permission of road signs to go around this or that gap, have a great influence on the condition of the vehicle. At the same time, the influence of the vehicle occurs in a reciprocal manner and on the road surface. If we talk about the structural elements of the road train, the research objectives of which were laid down, it includes such basic elements as bridges, frame, springs, suspension, wheels, etc. Along with the above, the studies have their direct meaning only when operating with a trailer. The action of this type of load on the car leads to a change in oscillations both in frequency and in amplitude. Therefore, the research shows the results of theoretical simulation of vibrations over the wheels of both the right and left sides of the vehicle for loading it over the axle of the vehicle, over the axle of the trailer, as well as between the axles of the car and the trailer. As a result of a series of studies, it can be concluded that the occurrence of vibrations of the trailer when it is loaded, for example, with grain, leads to the formation of vibrations over the wheels of the vehicle under study. It is natural that the largest oscillations in terms of frequency and amplitude are observed when the trailer is loaded over its bridge. Similarly, the highest frequency and amplitude of oscillations occur above the bridge of the car. Minimal fluctuations in terms of amplitude and frequency are observed when the trailer is loaded between its axles.