Machinery & Energetics

In agricultural production, when machining and tractor units of technological operations, there is contact interaction of wheels with soil, which is accompanied by deformation and compacting of latter, which negatively affects change in its structure. In order to reduce the negative impact on the soil, it is necessary to determine the optimal structural parameters of the wheel propulsion of machine-tractor aggregates. The article analyzes the existing models of interaction of the wheel with the bearing surface and defines the main parameters that influence the contact area and the distribution of the load on the soil when applying the modern agrotechnological tire. The performed analysis of existing models of contact interaction between the tire and the reference surface made it possible to conclude that there are no mathematical models that take into account the properties of the soil and their influence on the deformation of the rubber. Taking into account the significant changes in the technologies of production of modern agrotechnological tires, the urgency of the problem of developing an adequate generalizing model of the interaction of the tire with the bearing surface, which would cover as much as possible the parameters influencing the deformation of the tire under the action of load, and taking into account both the structural and technological parameters of the tire and the properties agrotechnological environment at their contact interaction.

propeller, wheel, tire, bearing surface, pressure, contact area, contact spot