Tishenko S. Principles of working elements adaptive surfaces design for differentiatiatiny of soil treatment processes.

Tishenko S. S. Principles of working elements adaptive surfaces design for differentiatiatiny of soil treatment processes. - Manuscript. Thesis on the competition the scientific degree of the doctor of technical sciences on speciality 05.05.11 - Machines and Devices for Mechanizations of Agricultural Production. - National University of Life and Environmental Sciences of Ukraine, Kyiv. Dnepropetrovsk State Agrarian University, Dnepropetrovsk, 2011. The principles of design and analysis of kinematic and dynamic characteristics of soil treatment working elements are defended. The results obtained on these principles are also defended. These are the following results. The soil treatment working elements surface design on the basis of geometrical models which are incident which one or two leading curves. These models allow to design of the predetermined main curvature. They also allow investigating the soil and working element interaction which is described by the function of jamming coefficient. These properties allow designing the guide curvatures of surfaces of predetermined curvature according to the process of treatment. The results of study of guide curvatures and design of surfaces for transporting function and ripping functions are defended. The conception of physics and mechanics relation of soil and working elements surfaces parameters and method of design are discussed in the thesis. The results of study of invariants of soil movement trajectory along the surface of working elements are o under consideration. These invariants include the twisting and curvature of kinematic and dynamic characteristics of working element on the basis of elementary arcs of sphere tangent indicatrix, binormals and main normals. The numerical method of calculation curvature and twisting trajectory soil movement is developed in the work. The results of study of integral twisting as a value which allows to estimable the dynamic resistance of soil treatment element are presented in thesis.