Vibrations in engineering and technology


Issue №: 4(111)

Published: 2023.12.02
DOI: 10.37128/2306-8744-2023-4

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.

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DOI: 10.37128/2306-8744-2023-4-8
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Yaroshenko Leonid – candidate of technical sciences, associate professor of the department of electric power engineering, electrical engineering and electromechanics of Vinnitsa national agrarian university, Service address: Vinnitsa, st. Sonyachna 3, VNAU 21008, e-mail: volvinlv@gmail.com,  https://orcid.org/0000- 0002-0261-006X   

Kolisnyk Mykola – Assistant Professor, Department of Electric Power Engineering, Electrical Engineering and Electromechanics, Vinnitsa National Agrarian University (3, Solnechna str., Vinnitsa, 21008, Ukraine, email: kolisnik30@gmail.com, https://orcid.org/0000-0001-5502-6556).

Andrii Shtuts – Assistant Professor, Department of Electric Power Engineering, Electrical Engineering and Electromechanics, Vinnitsa National Agrarian University (3, Solnechna str., Vinnitsa, 21008, Ukraine, email: shtuts1989@gmail.com, https://orcid.org/0000-0002-4242-2100). 

Yurii Prysiazhniuk – postgraduate in specialty 133 «Sectoral Mechanical Engineering» of Vinnytsia National Agrarian University (3, Sonychna St., Vinnytsia, 21008, Ukraine, +380964117015, prisaznuku13@gmail.com, https://orcid.org/0000-0002-3351-3676).



In this scientific article, two deformation models for analyzing the accumulation of material damage during upsetting and direct extrusion using the die forming method are investigated. Both models include an analytical representation of the deformation trajectory, approximation of the boundary deformation curve, and a damage accumulation model. A three-parameter representation of the boundary deformation curve is applied, utilizing a power-law model and a linear damage accumulation model.

The process of direct extrusion is examined by constructing parametric equations for the deformation trajectory. The functional dependence for the stress state indicator involves three constants, while a non-elementary function with a single constant is used for the accumulated deformation, determined using the theory of limit functions. Considering the complexity of trajectories, the use of a power-law accumulation model with a fixed nonlinearity indicator value is justified. The methodology for determining this indicator confirms its positive values less than one for the investigated trajectories, affirming its applicability. Numerical experiments demonstrate an increasing dependence of the limiting deformation with the increase of this indicator, indicating the effectiveness of the model.


Keywords: assessment, deformation resistance, material, blanks, direct extrusion, die forming method.

List of references

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About journal

Topics of the journal:

The journal "Vibrations   in engineering  and technology" presents materials on the following issues

• Theory of processes and machines
• Mechanical Engineering and materialprocessing
• Processing and food production

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:



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Key information:
ISSN (print): 2306-8744
DOI: 10.37128/2306-8744

The certificateof massmedia State registration:kv no 16643-5115 from 30.04.2010 .
Founder of the journal: Vinnytsia National Agrarian University

Kind of publication: journal
Type of publication : Scientific
Publication status: Domestic
Year of founding:
Periodicity: 4 times a year
Extent: 18.75 nominal printed pages
ISSN: 2306-8744 (printed version), (online)
Language of edition  : (mixed languages) Ukrainian, English
The scope of the distribution and the category of readers: national, foreign, teaching staff, scientists, businessmen.
Periodical is included in the list of scientific professional editions of Ukraine approved by the Order of Ministry of Education and Sciences of Ukraine from 21.12.2015 No. 1328.
The journal "Vibrations in engineering and technology" is included in the "Catalogue of periodicals of Ukraine".
Journal subscription can be executed in each post office department.
 Subscription Index is  99720.


Old version of site: http://vibrojournal.vsau.edu.ua/

History of journal:

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  94 issues wherestudy of vibration effects, the creation of progressive energy saving technologies and equipment for their implementation were highlighted.
Currently Kaletnik H.M  PhD , professor, academician NAAS 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.