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Vibrations in engineering and technology

space SCIENTIFIC JOURNALS OF VINNITSA NATIONAL AGRARIAN UNIVERSITY

Issue №: 2(89)

Published: 2018.06.26
DOI: XXXXX.XXXXXXXX


Description:
Журнал присвячено висвітленню проблем з вібраційних технологій і машин, математичних методів досліджень вібраційних процесів, подано інформацію про проєктно-конструкторські технологічні розробки, представлено навчально-методичні аспекти викладання у Вищій школі прикладних дисциплін, де вивчаються вібраційні машини і технології.

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ON THE EFFECT OF NON-SYMMETRY OF THE POWERFUL CHARACTERISTICS OF THE VIBRATION SYSTEM IN MECHANICAL IMPACT

DOI: XX.XXXXX/XXXXXXXXXXXXX
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Olshansky Vasiliy Pavlovich – Professor of the Department of Theoretical Mechanics and Machine Parts, Kharkiv National University of Agriculture, Dr. Sci. (Phys.-Math).

Olshansky Stanislav Vasilyevich – Candidate . Sci. (Phys.-Math), (E-mail: stasolsh77@gmail.com).

 

Annotation

The features of the motion of a mechanical system with one degree of freedom are considered, in the case of asymmetry of its elasticity characteristics, with a vertical impact by a falling solid. It is shown that as a result of asymmetry of the characteristics, the maximum movements of the system downward in the direction of the impact velocity may be less than the maximum displacement of the system upward. Conditions are defined when this inequality holds. The conditions depend not only on the proper parameters of the oscillatory system, but also on the mass and velocity of the impacted body. The investigation was carried out on the assumption that the mechanical impact is absolutely inelastic, when after an instantaneous collision of solids they move together with the same speed and the same acceleration

 

Keywords: dynamic effect of asymmetry, oscillatory system, piecewise linear characteristic of elasticity, mechanical impact

List of references

1. Blehman I.I. (1972) Vibratsii v tehnike. Kolebaniya nelineynyih mehanicheskih sistem. [Vibrations in technology. Oscillations of nonlinear mechanical systems]. (Vols. 4). – Moscow: Mechanical Engineering [in Russian].

2. Avramov K. V., Mikhlin Yu. V., Ischuk Yu. A. Modeli nelinejnoj mekhaniki v prikladnyh zadachah ehnergeticheskogo mashinostroeniya [Models of nonlinear mechanics in applied problems of power engineering]. Kharkov : NTU «KhPI [in Russian].

3. Larin A. А. Ocherki istorii razvitiya teorii mekhanicheskih kolebanij [Essays history of development theory of mechanical oscillations]. Sevastopol: Weber, [in Russian].

4. Goldsmith B. Udar. Teoriya i fizicheskie svojstva soudaryaemyh tel [Strike. Theory and physical properties of collapsed bodies]. Moscow : Gosstroizdat [in Russian].

5. Kilchevsky N. A. Teoriya soudareniya tverdyh tel [The theory of collision of solids]. Kyiv : Scientific Opinion [in Russian].

6. Filippov A.P. Kolebaniya deformiruemyh sistem [Oscillations of deformable systems]. Moscow : Mechanical Engineering [in Russian].

7. Panovko Y. G. Vvedenie v teoriyu mekhanicheskogo udara [Introduction to the theory of mechanical shock]. – Moscow: Nauka [in Russian].

8. Olshanskii V. P., Olshanskii S. V., Tishchenko L. M. Kolebaniya sterzhnej i plastin pri mekhanicheskom udare [Oscillations of rods and plates during a mechanical shock]. Kharkov : Miskdruk [in Russian].

9. Pisarenko G. S., Kvitka A. L., Umansky E. S. Opіr materіalіv [Materials Resistance]. Kyiv : Higher school [in Ukrainian].

 

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About the journal

Topics of 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:

 

 

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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

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

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  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.