Mathematical model for assessing the influence of a coupled suspension system on the smooth running of a tracked vehicle

This article is devoted to the solution of the actual problem - the development of an imitative mathematical model for the investigation of the smooth running of a caterpillar vehicle with a coupled suspension system. The publication is an analysis of the merits and demerits of existing mathematical models, allowing to evaluate the feasibility of certain constructive solutions at the design stage. In order to take into account the links in the suspension system and to assess the possibility of using the obtained mathematical model to study the smoothness of the progress of vehicles with a coupled suspension system, the authors finalized the mathematical model of rectilinear motion created by staff of Bauman Moscow State Technical University. The simulation was carried out in the MATLAB Simulink software package. The results of the work of the simulation mathematical model of the coupled suspension system are demonstrated on the example of solving an applied problem: comparison of the smoothness of the track of a caterpillar vehicle with a coupled and independent suspension system. It is shown that the presence of bonds in the suspension system introduced to reduce loads on the chassis elements does not affect the smoothness of the track of the caterpillar machine. The height of the periodic irregularities that the vehicle can overcome without “disruption” of the suspension in the entire speed range for both versions of the suspension system is 0.23 m. This corresponds to the level of modern high-speed crawler vehicles. Thus, the modified simulation mathematical model allows to investigate the smoothness of the transport vehicles with the coupled suspension system.

imitation mathematical model, coupled suspension system, smooth running, caterpillar vehicle, pneumatic hydraulic spring