Issue №: 1(120)
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 THE DEPENDENCE OF FEED MIXTURE HOMOGENEITY ON THE OPERATING PARAMETERS OF A VIBRATORY MIXER
Volynets Yevhenii – Doctor of Philosophy in Industrial Engineering, Senior Lecturer at the Department of Occupational Safety and Biotechnical Systems in Animal Husbandry at Vinnytsia National Agrarian University (3 Sonyachna St., Vinnytsia, 21008, Ukraine, e-mail: evgen110596@gmail.com, https://orcid.org/0000-0002-3298-6316).
The paper investigates the influence of the operating parameters of a vibratory mixer on the formation of feed mixture homogeneity and establishes quantitative patterns in the variation of the homogeneity coefficient depending on the kinematic and vibration characteristics of the process. The relevance of this study stems from the need to ensure high-quality feed mixtures with minimal time and energy expenditure, as the uniformity of the components directly affects feeding efficiency and the economic performance of livestock farming. The aim of the research is to establish a statistically justified multifactor dependence of the homogeneity coefficient on the operating parameters of a vibratory mixer and to determine rational operating modes.
Experimental studies were carried out using a full factorial experimental design with variation of the paddle shaft rotational speed, container rotational speed, vibration mode coefficient, and mixing time. Based on the processing of experimental data, a second-order regression model describing the variation of the mixture homogeneity coefficient was developed. The statistical significance of the model parameters was evaluated using Student’s t-test, and its adequacy was verified using Fisher’s F-test at a confidence level of 0.95.
According to the modeling results, rational operating modes of the mixer were determined, under which the homogeneity coefficient reaches δ = 0.932 at a paddle shaft rotational speed of 40.9 min-1 and a container rotational speed of 23.9 min-1. The minimum value of δ = 0.851 was observed at low values of the operating parameters. An effective operating region was established in which a technologically sufficient level of homogeneity (δ ≥ 0.9) is ensured. An analytical dependence of the mixing time t0.9 required to achieve a specified level of homogeneity was obtained, which makes it possible to predict process parameters and perform optimization. The correlation coefficient between experimental and calculated data is 0.87, confirming the adequacy of the developed mathematical model.
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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.
