Abstract
Under the action of the working surface of the tillage unit, three mutually perpendicular stresses and corresponding deformations occur in the soil layer, which are characterized by different time functions. The finding of these functional relationships is the fundamental task of agricultural mechanics, with the help of which the process of soil crumbling with different physical and mechanical properties can be described in interaction with working bodies. The article presents an analysis of the results of studies of domestic and foreign scientists of the process of soil destruction in its interaction with working bodies. When considering the process of soil destruction from the point of view of stress theory, the Coulomb-Mohr theory of destruction is most often used. It is proposed to expand the consideration of the process of soil destruction by adding elements to the theory of strength that will describe the rate of change of the acting loads.
Highlights
Under the action of the working surface of the tillage unit, three mutually perpendicular stresses and corresponding deformations occur in the soil layer, which are characterized by different time functions
The results obtained by them clearly state that the fundamental task of agricultural mechanics is to study and build a model of the process of interaction between the working body and the soil, in order to minimize its energy intensity
Three mutually perpendicular stresses arise in the soil under the action of the working bodies on the soil aggregates, which are characterized by their magnitude and are called the main, minimal and medium or medium, and are invariants of stress state
Summary
Intensive population growth in the global space, as well as the peculiarities of the global economic model, inevitably leads to stricter requirements for the efficiency of any agricultural production. The main task of the agricultural industry was considered to be obtaining a given volume of a particular product with specified quality parameters. In recent years, the requirements have shifted somewhat, and the requirement to minimize the reduced costs in the production of agricultural products has been added to this task [9, 10, 19]. Crop production is considered the most important element of the agricultural sector of the Russian Federation, which uses an interconnected set of technologies for soil treatment, fertilization, plant protection, harvesting, etc. Disk working bodies are increasingly used for tillage, which cut off, crumble, shift and partially wrap the treated layer in the process of work [12, 15, 16, 18]
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