Issue №: 4 (103)
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.
RESULTS OF EXPERIMENTAL RESEARCHES OF DEEP VIBRATORS WITH THE HYDROPULSE DRIVE FOR CONSOLIDATION OF CONCRETE MIXES
Kots Ivan – Ph.D., Professor of the Department of Engineering Systems in Construction, Head and Supervisor of the Research Laboratory of Hydrodynamics, Vinnytsia National Technical University, Vinnytsia, ORCID: 0000-0003-0870-6385, e-mail: ivan.kots.2014@gmail.com
Kurylenko Yuriy – graduate student of the Department of Engineering Systems in Construction, Vinnytsia National Technical University, Vinnytsia, e-mail: Urakurilenko1@gmail.com
Many construction processes that involve concreting work require deep compaction of concrete mixtures. The basic properties and characteristics of building structural elements depend on quality of consolidation of concrete. The highest quality compaction of the concrete mixture is achieved due to the vibration force interaction with the working equipment, which generates vibration oscillations with its working surfaces, which are transmitted to the concrete environment. Under the influence of vibration on the concrete mixture there is a forced oscillation of the particles of the mixture, which is actually a periodic shaking of the system. Being in a suspended state during shaking, the connection of the particle of the solution with other particles is constantly broken. Due to the influence of the force of the shock and under the influence of its own mass when falling, the particles tend to occupy a more compact position in which the impact of the shocks on them is minimal. Due to the denser packaging, the entire concrete mix is compacted. This also disrupts the bond between the particles, reduces the viscosity of the two-phase system, the concrete mixture returns to a temporarily fluid state, ie acquires the so-called thixotropy. Being in a liquid state, the mixture spreads better during vibration and takes the form of a container containing it, followed by compaction under the action of gravity. For each type of concrete mix there are the optimum parameters of influence of vibration (frequency of fluctuations, amplitude, duration) at which quality of products is most effectively provided. Determining the most optimal modes of operation of deep installations for compaction is a rather technically difficult task. The results of experimental research of a new constructive solution of an immersion planar installation with a hydropulse drive for deep compaction of concrete mix in real conditions are given. The results obtained after the experiments were processed according to the experimental planning method. The regression equations which characterize the basic initial parameters of installation from variable factors of influence are received.
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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.
