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.
EXPERIMENTAL INVESTIGATION OF THE PRODUCTIVITY OF A GRAVITATIONAL FEEDER FOR BULK MATERIALS
Serputko Roman - Recipient of the Third Educational and Scientific Level of PMAI, Lviv Polytechnic National University (12 Stepan Bandera Str., Lviv, Ukraine, 79013, e-mail: roman.s.serputko@lpnu.ua), ORCID 0009-0004-9324-0368.
The article presents the results of an experimental study on the performance of a gravitational feeder for bulk materials as a function of its geometric parameters. The main objective of the research was to establish a quantitative relationship between the curvature radius of the chute and its inclination angle, and to determine the optimal combination of parameters that ensure maximum material flow rate and stable operation. To achieve this, a two-factor experimental design with three levels of each factor was applied, providing a reliable data set with high repeatability.
The experiments were conducted on a specially designed laboratory setup that allows adjustment of both chute curvature and inclination angle. Measurements were performed for nine combinations of factors with three replications at each point. The flow rate was calculated from mass and time measurements, and statistical analysis was carried out to evaluate repeatability. The coefficient of variation did not exceed 5%, indicating stable flow and reliable experimental results.
A second-order regression equation was developed to describe the relationship between productivity and the two influencing factors. The obtained coefficient of determination R^2=0,98 confirms the high accuracy and adequacy of the model. The results show that increasing the inclination angle from -10° to +10° increases productivity by 40–45%, while increasing the curvature radius from 120 mm to 160 mm adds another 25%. The maximum productivity of Q=7,5 kg/min is achieved at ρ=160 mm and α=10°. The optimal operating zone is located at ρ=140-150 mm and α=8-12°.
Graphical interpretation using linear plots, contour diagrams and histograms supports the obtained results. The practical significance of this study lies in the possibility of applying the derived mathematical model and experimentally established patterns for the design and optimization of gravitational feeders in agricultural, food and construction industries, as well as for the development of automated dosing control systems.
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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.
