Issue №: 4(119)
The journal deals with the problems of vibration technologies and machines, mathematical methods of vibration process studies, information on design and technological development, presents teaching and methodological aspects of teaching in the Higher School of Applied Sciences, where vibration machines and technologies are studied.
DETERMINATION OF RATIONAL PARAMETERS AND OPERATION MODES OF ROTARY RAKES
Priadkin Maksym - Postgraduate Student of the Department of Agroengineering and Technical Service of Vinnytsia National Agrarian University (Soniachna Str., 3, Vinnytsia, 21008, Ukraine, e-mail: makspradkin4@gmail.com, https://orcid.org/0009-0003-7008-4262).
In the feed production system, the harvesting of forage from leguminous grasses and leguminous mixtures plays a key role in achieving high levels of plant protein. However, the efficiency of using the biological potential of the crop is significantly limited by the imperfection of the technological processes of harvesting. The specificity of leguminous grasses arises from a significant difference in the strength of the connection with the stem of the most valuable vegetative organs - leaves and inflorescences, which in terms of nutritional value are 2...3 times greater than the stem fraction. It has been established that the main crop losses and reduction in feed quality occur during mechanical processing of the dried mass, in particular when performing the operations of stirring, raking into windrows and turning. Therefore, an objective assessment of the quality of the work of the relevant agricultural machines (tedders, rakes) is a critically important condition for improving technologies.
The main methodological problem in researching these processes is the difficulty of reliably determining quantitative loss indicators in field conditions. In real operating conditions, due to the fine size of lost particles and their tendency to shatter, complete collection is practically impossible. In this regard, the assessment of machine quality in the field is carried out mainly by indirect methods, the reliability of which raises well-grounded doubts.
During mechanical action, two parallel processes occur: first, the loss of a portion of the free particles that already existed in the swath (due to scattering on the stubble); second, the active destruction of plants with the formation of new free fractions. A part of these newly formed particles is lost irretrievably, but a significant amount accumulates in the structure of the formed windrow, remaining in a "bound" state until the next mechanical impact. Thus, determining losses by a simple difference masks the real level of plant damage, as it does not account for the accumulation of free particles in the mass. This leads to the distortion of test results and complicates the constructive improvement of machinery. Solving this scientific problem requires the development of new theoretical approaches that would take into account the combined influence of scattering and accumulation factors of vegetative residues in the process of fodder harvesting.
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About the journal
The journal "Vibrations in Engineering and Technologies" is included in the list of technical scientific publications of Ukraine
(Category "B", Order of the Ministry of Education and Science of Ukraine dated July 2, 2020 No. 886)
Old version of the site: http://vibrojournal.vsau.edu.ua/
The journal "Vibrations in Engineering and Technology" is indexed by the following databases and catalogs:
The certificateof massmedia State registration:kv no 16643-5115 from 30.04.2010 .
Founder of the journal: Vinnytsia National Agrarian University
The journal is devoted to highlighting current issues in engineering, mechanical engineering, and technological processes, including the study of dynamic and oscillatory phenomena in technical systems, the application of mathematical methods for process modeling and analysis, as well as the presentation of results of design-engineering and technological developments. Particular attention is given to the study of vibration processes and their application in modern technologies.
The purpose of the scientific journal “Vibrations in Engineering and Technologies” is to disseminate the results of fundamental and applied research in the field of engineering sciences aimed at developing theoretical foundations and practical approaches to the design, analysis, and improvement of machines, materials, and technological processes, including the use of vibration and oscillatory effects in various sectors of production.
The publication is focused on the formation of a modern scientific and informational environment for the effective exchange of research results, support of innovative development, and implementation of advanced technical solutions in industry, agro-industrial production, and related fields.
The journal promotes the development of interdisciplinary research, the integration of modern engineering approaches, and the enhancement of the efficiency of technological processes and technical systems, including through the rational use of vibration phenomena.
Objectives of the Scientific Journal
To achieve its stated purpose, the journal addresses the following key objectives:
dissemination of results of fundamental and applied scientific research in the fields of mechanics, mechanical engineering, technological processes, machine dynamics, and equipment, as well as in areas related to the application of vibration phenomena in engineering and technologies;
promotion of research aimed at the creation and improvement of machines, mechanisms, and technological equipment based on oscillatory and vibration processes;
support for the implementation of modern technological solutions focused on improving productivity, energy efficiency, and reliability of technical systems;
обеспечение scientific exchange of research results among research institutions, higher education establishments, and industrial enterprises;
development of interdisciplinary cooperation among researchers in the fields of mechanics, materials science, material processing technologies, and automation of technological processes;
dissemination of modern scientific achievements and advanced technologies related to the application of vibration processes in production and technical systems.
Publisher Vinnytsia National Agrarian University
In June 1994 the 2nd International Scientific and Technical Conference "Application of vibrations for technological purposes" was organized on the basis of Vinnytsia State Agricultural Institute. Leading experts in this field, noting the significant contribution to the school of Vibration Engineering under the leadership of P. S. Bernyk, proposed to create a professional all-Ukrainian scientific and technical journal "Vibration in engineering and technology..The journal was foundedat Vinnytsia State Agricultural Institute and P.S. Bernyk was elected to be the chief editor .
For all these years (since 1994) theJournal "vibration in engineering and technology" published 119 issues wherestudy of vibration effects, the creation of progressive energy saving technologies and equipment for their implementation were highlighted.
Currently Ihor Kupchuk, Candidate of Technical Sciences, Associate professor, Associate Professor of the Department of Engineering Mechanics and Technological Processes in the Agricultural Industry Faculty of Engineering and Technology Vinnytsia National Agrarian University is the chief editor of the "Vibrations in engineering and Technology"
The journal "Vibration in Engineering and technology", which has no analogues on the territory of Ukraine, is well known abroad.
