Machinery & Energetics

During the work of machine-tractor units there is a contact between the wheel and the ground. In the interaction there is deformation and consolidation of the soil, which adversely affects the change in its structure. In order to reduce the negative impact on the soil, it is necessary to determine the optimal constructional parameters of the wheeled motors of machine-tractor aggregates. For this it is necessary to use simulation models of the soil that are adequate to the actual soil formation. The article deals with the laboratory method for evaluating structural soil models based on the model of continuous medium. The application of the model of a continuous medium in the soil mechanics allows one to immediately transfer to the last range of solutions obtained in the mechanics of the continuous medium. Experience shows that in applications of soil mechanics solutions found in the theory of elasticity, plasticity theory, and in other sections of continuum mechanics, in many cases it is possible to correctly evaluate the order of the deformation expectation and to obtain an approximate character of their distribution in the soil environment. The article also develops a method of deformation and destruction of the soil structure, which allows, in laboratory conditions, to simulate the influence of running systems on the fertile soil layer, depending on its structure, and to determine the correlation of critical deformation and parameters that lead to the destruction of the corresponding structure of the soil. The obtained modeling results allow us to assert about the possibility of determining the critical loads of deformation and fracture loads depending on the structure and other parameters of the soil state.

soil, section, tear-off machine, contact spot, porosity