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.
ANALYTICAL JUSTIFICATION OF AN IMPROVED STRUCTURAL AND TECHNOLOGICAL DESIGN OF A SEEDING UNIT EQUIPPED WITH A VISCOELASTIC DAMPING DEVICE
Yaropud Vitalii – Doctor of Technical Sciences, Associate Professor, Dean of the Engineering and Technology Faculty, Vinnytsia National Agrarian University (3 Soniachna St., Vinnytsia, Ukraine, 21008, e-mail: yaropud77@gmail.com.
Tykhyy Oleksandr – Candidate for the degree of Doctor of Philosophy in specialty 133 Industrial Mechanical Engineering in Industrial Mechanical Engineering of the Department of «Machinery and Equipment for Agricultural Production» of Vinnytsia National Agrarian University (3 Sonyachna St., Vinnytsia, 21008, Ukraine, e-mail: tdsunagro@gmail.com).
The study presents an analytical investigation of an improved structural and technological design of a seeding unit equipped with a viscoelastic damping device intended to reduce dynamic oscillations and stabilize seed placement depth. A spatial hinge-linked mechanical system of the basic seeding unit is examined, its structural model is developed, and the mass-inertial, kinematic and force parameters of its main elements – including the horizontal and inclined beams, the opener shank and the gauge wheel – are determined. Based on analytical mechanics, a system of second-order Lagrange differential equations is formulated to describe the oscillatory processes, incorporating the potential and kinetic energy of the system components as well as the effects of soil reaction forces and viscous damping.
To evaluate the dynamic response of the seeding unit, numerical simulations were performed in the Wolfram Cloud environment, enabling the determination of time histories of angular and linear displacements and the identification of the oscillation characteristics, including amplitude-frequency behaviour. The results show that the implementation of a viscoelastic damper reduces oscillation amplitude, shifts resonant frequencies and decreases the system’s quality factor, thereby improving the stability of the working elements and enhancing seeding accuracy.
A second-order regression model describing the dependence of the coefficient of variation of the frame rotation angle on the damper parameters and seeder forward velocity was developed. This model enables the selection of optimal stiffness and damping values for the viscoelastic element. The obtained results may be used in the design and modernization of seeding units and serve as a basis for further research in the dynamics and vibration loading of agricultural machinery.
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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.
