Viktor Martyniuk

• Lutsk National Technical University

The paper considers the practical possibility of self-synchronisation of two biharmonic unbalanced vibration exciters mounted on a solid body with plane oscillations. The problem is solved by the method of direct separation of motions. The equations for slow processes of establishing synchronous modes of rotation of the exciters are obtained; expre...

The relevance of the study is due to the need to reduce the energy intensity of the process of cutting sunflower stalks by choosing a rational profile of knives. The research is based on a comparative analysis of experimental values of cutting forces for the proposed and manufactured design of the knife system and known knife systems. The studies h...

Current situation with the fleet of transport and technological machinery in Ukraine requires an individual approach to evaluating the effectiveness of its maintenance and repair system. The article is devoted to the issue of selecting the most effective option for the use of transport and technological machinery taking into account the specific co...

Stationary (near stationary) rotation modes of an unbalanced rotor with the oscillation frequency of its axis are considered. From the standpoint of I. I. Blekhman vibrational mechanics, explanations of the mechanism of vibrational capture of the rotation of an unbalanced rotor are given. It is demonstrated that the vibration moment arising as a re...

The article presents the results of research carried out during the creation of a machine for contact weed control and clarification of the parameters of its operation. The purpose of the research, the results of which are set out in the article, is to prove experimentally the hypothesis put forward in the course of creating a machine for contact w...

The design of a reaper that provides grinding of stems, which eliminates the need for mulcher application, offers the conditions for introducing a new technology of growing No-Till crops in agrarian enterprises. The substantiation method of the analytical model is proposed, which allows to determine the nature of the stem movement on the side surfa...