Machinery & Energetics

Physical-mechanical analysis of processes of interaction of tillage tools of cultivators is equipped with a spring suspension with a treated environment was carried out. Theoretically, considered possible oscillatory movements of tillage tools such as subharmonic oscillations, depending on the nonlinear elastic characteristics of the suspension. The basic characteristics of subharmonic oscillations are established: amplitudes, frequencies, conditions of origin, stability of the basic solution. An analysis of such mechanical systems is carried out using their elastic characteristics, that is, the graphical or analytical relationship between the static load on the system (F) and the corresponding displacement load (q). The analysis of the elastic characteristics of the structures of oscillatory systems has shown that those systems that have one elastic element (a spring) also have a linear nature of the restoring force. Structures that consisting with several elastic elements (flat and cylindrical springs) have a nonlinear relationship between applied load and displacement. The use of nonlinear characteristics of the system, in particular, lump-linear, significantly improves the energy and agro-technical parameters of the elastic suspension during the processing of soils. As a method of analysis, the method of attachment and approaches developed by professor Zakrzewski M.V.

analysis, modeling, interaction, tillage tool, agricultural machines, spring suspension, soil