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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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METHOD MODELING OF COMBINED COLD METAL EXTRACTION PROCESSES

DOI: XX.XXXXX/XXXXXXXXXXXXX
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Derevenko Iryna – Candidate of Technical Sciences, Senior Lecturer of the Department of General Technical Disciplines and Labor Protection, Vinnytsia National Agrarian University (3, Solnyschaya St., Vinnytsia, Ukraine,21008, e-mail: i.a.derevenko@gmail.com).

Annotation

A modeling method is developed for estimating the limiting form-modification of the workpieces of the parts deformed by the method of combined cold extrusion without disturbing their integrity. The proposed modeling method takes into account the factors influencing the plasticity of metals. Based on the hypothesis of kinematic similarity and similarity of paths of deformation, we propose a formula by which one can calculate the maximum permissible contractions for materials, whose diagram of plasticity is known. The resource of plasticity is calculated taking into account and without taking into account the third invariant of the stress tensor. It is shown that when constructing plasticity diagrams, it is necessary to take into account the influence of the third invariant of the stress tensor on plasticity.

Keywords: resource of plasticity, modeling, cold form modification, strain-strain state, paths of deformation of material particles

List of references

1.Alieva, L.I. (2006). Sovershenstvovanie processov holodnogo vydavlivaniya osesimmetrichnyh detalej s flancem [Improvement of the processes of cold extrusion of axisymmetric parts with a flange]. Candidate’s thesis. Kramatorsk: DGMA [in Ukrainian].

2. Aliev, I.S., & Alieva, L.I., & Martyinov, S.V., & Tkachenko, N.Yu. (2010). Otsenka tehnologicheskoy deformiruemosti pri holodnom vyidavlivanii vtulok s flantsem [Evaluation of technological deformability at cold extrusion of bushings with a flange] Nauchnyiy vestnik DGMA - Scientific Herald DSEA, 1(6E), 9-4. [in Ukrainian].

3.Ogorodnikov, V. A. (1983). Otsenka deformiruemosti metallov pri obrabotke davleniem [Evaluation of the deformability of metals during pressure treatment]. Kiev: Vyischa shkola [in Ukrainian].

4.Derevenko I.A. (2012) Deformiruemost i kachestvo zagotovok v usloviyah kombinirovannogo formoizmeneniya [Deformability and quality of blanks in conditions of combined shaping]. Obrabotka metallov davleniem. Sbornik nauchnyih trudov – Metal forming. Collection of scientific papers, 3(32), 87-96 [in Ukrainian].

5.Ogorodnikov, V.A., & Rvachev, V.A., & Gaydamak, O.L. (1987). Vyidavlivanie instrumentalnyih staley [Extrusion of tool steels]. Kuznechno-shtampovochnoe proizvodstvo - Forging and stamping production, 8, 8-11 [in Russia].

6.Unksov, E.P., & Ovchinnikov, A.G. (Ed.). (1992). Teoriya kovki i shtampovki [Theory of forging and stamping]. Moskov.: Mashinostroenie [in Russia].

7.Ogorodnikov, V.A., & Grushko, A.V., & Derevenko, I.A. (2012). Modelirovanie processov obrabotki davleniem na osnove gipotezy o silovom i kinematicheskom podobii parametrov deformirovaniya [Modeling of the processes of pressure treatment on the basis of the hypothesis of the force and kinematic similarity of deformation parameters]. Obrabotka metallov davlenim: Sb. nauchn. tr. - Metal forming. Collection of scientific papers, 4(34), 46-52. [in Ukrainian].

 

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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

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

The certificateof massmediaState 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.