Akhmed A. Justification of parameters and modes of propulsion of wheeled mobile agricultural units

In dissertation the analysis of the known solutions is executed about interaction of the deformed pneumatic wheels of passive and active type with soil, and also the deformed skating rinks with the deformed surface. It is established, that the most adequate are the research results obtained by A. Yu. Ishlinskiy and D. I. Zolotarevskaya. However, the results do not allow in full measure to assess the nature of these interactions. Physical equalizations are shown out for description of conduct of resilientlyviscid bodies (wheel and soil). Equalizations, describing the shape of contact surface of wheel with soil and spreaded contact normal and tangent forces, are got. Theseequalizations are fixed in basis of decision of contact task of interaction of two bodies of uncoordinated geometrical shape. This approach allowed us to determine the boundaries of the front and back of the contact zone of the deformable wheels with the soil (deformable) as function of the attached forces, geometrical shape and sizes and mechanical properties of contacting bodies, in particular of their modules of elasticity and coefficients of viscosity. The definition of the boundaries of the front part of the contact zone and the absolute deformation of the wheel and the soil has created the preconditions for the analytical determination of coefficient of resistance of wobbling of the deformed body on the deformed surface. The solution of the contact problem of interaction of a deformable wheel with deformable surface allowed us to determine the absolute components of the surface deformation of the wheel and soil for a planar formulation of the problem. The adequacy of the theoretical dependences are confirmed by experimental results.