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Akimov D. F., Klimenko D. Akimov D. F., Klimenko D. Akimov D. F., Klimenko D. Teoreticheskie osnovy metodov kompiuternogo modelirovaniia: ucheb.-metod. Metod konechnykh elementov v nelineinykh zadachakh inzhenernoi mekhaniki. Akimov D. I., Klimenko D. Akimov D. F., Klimenko D. Novi materialy i technolohii v metalurhii ta mashynobuduvanni. Akimov D. Novi materialy i technolohii v metalurhii ta mashynobuduvanni. G., Akimov D. URL: http://datareview.info/article/vse-modeli-mashinnogo-obucheniya-imeyut-svoi-nedostatki 16. Vykorystannia mashynnoho navchannia dlia prohnozuvannia napruzheno-deformovannoho stanu kvadratnoi plastyny. Matematychne modeliuvannia fizychnykh I tekhnolohichnykh system.
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11. Some results of strength calculations relying on analytical and FEM approaches. Trends of using contemporary machine learning strategies

Authors:

Gryshchak V. Z.

Organization:

Zaporizhzhia National University, Zaporizhzhia, Ukraine

Page: Kosm. teh. Raket. vooruž. 2020, (1); 107-113

DOI: https://doi.org/10.33136/stma2020.01.107

Language: Russian

Annotation: This article analyzes the results of studies, which are based on numerical methods of analysis, of the stress-strain state of thin-walled shell structures. This article also discusses analytical solutions that apply asymptotic approaches and a method of initial parameters in a matrix form for solving a problem of equal stability of reinforced compartments of combined shell systems of the rocket and space technology within the scope of the research being carried out jointly by teams of Yuzhnoye State Design Office and Zaporizhzhya National University. The primary attention is paid to the use of FEM-based direct numerical methods and the research results for which analytical methods can be useful for making a preliminary assessment of the bearing capacity of load-bearing structures, and in some cases for their rational design. This article does not contrast numerical and analytical approaches but about the possibility of using them effectively. The article talks about possible ways of using the up-to-date technique of machine learning (Machine Learning Technology) in the calculation and experimental methods for determining the characteristics of the rocket and space technology.

Key words: numerical and analytical methods, stress-strain state, rocket structures, shell system, reinforcing load-bearing elements, local and general stability, machine learning technology

Bibliography:
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16. Choporova О. V., Choporov S. V., Lysniak А. О. Vykorystannia mashynnoho navchannia dlia prohnozuvannia napruzheno-deformovannoho stanu kvadratnoi plastyny. Matematychne modeliuvannia fizychnykh I tekhnolohichnykh system. Visnyk KhNTU. 2019. № 2(69). S. 192–201.

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11.1.2020 Some results of strength calculations relying on analytical and FEM approaches. Trends of using contemporary machine learning strategies
11.1.2020 Some results of strength calculations relying on analytical and FEM approaches. Trends of using contemporary machine learning strategies
11.1.2020 Some results of strength calculations relying on analytical and FEM approaches. Trends of using contemporary machine learning strategies

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]]> 5.1.2020 Strength and stability of inhomogeneous structures of space technology, consid-ering plasticity and creep https://journal.yuzhnoye.com/content_2020_1-en/annot_5_1_2020-en/ Wed, 13 Sep 2023 06:15:53 +0000 https://journal.yuzhnoye.com/?page_id=31026
1 , Klimenko D. Yu., Ivlev D. Advances in Appl. Trudy v 4-kh t. Modelirovanie dinamicheskikh protsessov v tverdykh telakh i inzhenernye prilozheniia. Nelineinye modeli i zadachi mekhaniki deformiruemogo tverdogo tela. Problemy mekhaniki deformiruemogo tverdogo tela. N., Klimenko D. Metod prodolzheniia po parametru v nelineinykh zadachakh mekhaniki deformiruemogo tverdogo tela. Mekhanika tverdogo tela. S., Lebedev A. Holohrafichne te akustyko-emisiine diahnostuvannia neodnoridnykh konstruktsii i materialiv / vidpovid. Eksperimentalnye metody v mekhanike deformiruemogo tverdogo tela. L., Klimenko D. S., Klimenko D. Problemy prochnosti, tekhnogennoi bezopasnosti i konstruktsionnogo materialovedenia. M., Klimenko D. M., Klimenko D. M., Klimenko D. M., Klimenko D. M., Klimenko D. M., Klimenko D.
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5. Strength and stability of inhomogeneous structures of space technology, consid-ering plasticity and creep

Authors:

Hudramovych V. S.2, Sirenko V. M.1, Klimenko D. V.1, Hart Ye. L.3

Organization:

Yangel Yuzhnoye State Design Office, Dnipro, Ukraine1; The Institute of Technical Mechanics, Dnipro, Ukraine2; Oles Honchar Dnipro National University, Dnipro, Ukraine3

Page: Kosm. teh. Raket. vooruž. 2020, (1); 44-56

DOI: https://doi.org/10.33136/stma2020.01.044

Language: Russian

Annotation: The shell structures widely used in space rocket hardware feature, along with decided advantage in the form of optimal combination of mass and strength, inhomogeneities of different nature: structural (different thicknesses, availability of reinforcements, cuts-holes et al.) and technological (presence of defects arising in manufacturing process or during storage, transportation and unforseen thermomechanical effects). The above factors are concentrators of stress and strain state and can lead to early destruction of structural elements. Their different parts are deformed according to their program and are characterized by different levels of stress and strain state. Taking into consideration plasticity and creeping of material, to determine stress and strain state, the approach is effective where the calculation is divided into phases; in each phase the parameters are entered that characterize the deformations of plasticity and creeping: additional loads in the equations of equilibrium or in boundary conditions, additional deformations or variable parameters of elasticity (elasticity modulus and Poisson ratio). Then the schemes of successive approximations are constructed: in each phase, the problem of elasticity theory is solved with entering of the above parameters. The problems of determining the lifetime of space launch vehicles and launching facilities should be noted separately, as it is connected with damages that arise at alternating-sign thermomechanical loads of high intensity. The main approach in lifetime determination is one that is based on the theory of low-cycle and high-cycle fatigue. Plasticity and creeping of material are the fundamental factors in lifetime substantiation. The article deals with various aspects of solving the problem of strength and stability of space rocket objects with consideration for the impact of plasticity and creeping deformations.

Key words: shell structures, stress and strain state, structural and technological inhomogeneity, thermomechanical loads, low-cycle and high-cycle fatigue, lifetime

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5.1.2020 Strength and stability of inhomogeneous structures of space technology, consid-ering plasticity and creep
5.1.2020 Strength and stability of inhomogeneous structures of space technology, consid-ering plasticity and creep
5.1.2020 Strength and stability of inhomogeneous structures of space technology, consid-ering plasticity and creep

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Development Strength Test of Modified Antares ILV Authors: Klimenko D. Content 2017 (1) Downloads: 36 Abstract views: 377 Dynamics of article downloads Dynamics of abstract views Downloads geography Country City Downloads USA Boardman; Matawan; Phoenix; Monroe; Ashburn; Seattle; Columbus; Ashburn; Boardman; Seattle; Seattle; Tappahannock; Portland; San Mateo; San Mateo; San Mateo; Des Moines; Boardman; Ashburn; Boardman 20 Singapore Singapore; Singapore; Singapore; Singapore; Singapore; Singapore; Singapore; Singapore; Singapore; Singapore 10 Ukraine Dnipro; Dnipro 2 Unknown Melbourne 1 Finland Helsinki 1 Canada Monreale 1 Romania Voluntari 1 Downloads, views for all articles Articles, downloads, views by all authors Articles for all companies Geography of downloads articles Klimenko D. Development Strength Test of Modified Antares ILV Автори: Klimenko D. Development Strength Test of Modified Antares ILV Автори: Klimenko D. Development Strength Test of Modified Antares ILV Автори: Klimenko D. Development Strength Test of Modified Antares ILV Автори: Klimenko D.
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3. Development Strength Test of Modified Antares ILV

Authors:

Klimenko D. V.1, Kuryachiy Е. V.1, Mishchenko O. I.2, Frolov V. P.1

Organization:

Yangel Yuzhnoye State Design Office, Dnipro, Ukraine1; DPHZ-DKAU, Dnipro, Ukraine2

Page: Kosm. teh. Raket. vooruž. 2017 (1); 18-22

Language: Russian

Annotation: The methodology and the results of strength tests of Antares ILV modified bay and case joint are presented. The data are given on tested assemblies loading schemes, loading sequence, methods of loads realization, and applied test equipment.

Key words:

Bibliography:

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]]> 5.1.2019 Methodology of Normative Principles of Justification of Launch Vehicle Launching Facility Structures Lifetime https://journal.yuzhnoye.com/content_2019_1-en/annot_5_1_2019-en/ Thu, 25 May 2023 12:09:25 +0000 https://journal.yuzhnoye.com/?page_id=27710
2 , Klimenko D. S., Klimenko D. N., Klimenko D. Klimenko, V. M., Klimenko D. M., Klimenko D. M., Klimenko D. M., Klimenko D. M., Klimenko D. M., Klimenko D.
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5. Methodology of Normative Principles of Justification of Launch Vehicle Launching Facility Structures Lifetime

Authors:

Hudramovych V. S.1, Sirenko V. M.2, Klimenko D. V.2, Daniyev Y. F.1, Hart Ye. L.3

Organization:

The Institute of Technical Mechanics, Dnipro, Ukraine1; Yangel Yuzhnoye State Design Office, Dnipro, Ukraine2; Oles Honchar Dnipro National University, Dnipro, Ukraine3

Page: Kosm. teh. Raket. vooruž. 2019, (1); 28-37

DOI: https://doi.org/10.33136/stma2019.01.028

Language: Russian

Annotation: This article contains results of methodology and standards development for life prediction of launch site structures to launch various types’ launch vehicles into near-earth orbit. Launch sites have been built in various countries of the world (European Union, India, China, Korea, Russia, USA, Ukraine, France, Japan, etc.). In different countries they have their own characteristics, depending on the type and performance of the launch vehicles, infrastructure features (geography of the site, nomenclature of the space objects, development level of rocket and space technology), problems that are solved during launches, etc. Solution of various issues, arising in the process of development of the standards for justification of launch site life is associated with the requirement to consider complex problems of strength and life of nonuniform structural elements of launch sites and structures of rocket and space technology. Launch sites are the combination of technologically and functionally interconnected mobile and fixed hardware, controls and facilities, designed to support and carry out all types of operations with integrated launch vehicles. Launch pad, consisting of the support frame, flue duct lining and embedded elements for frame mounting, is one of the principal components of the launcher and to a large extent defines the life of the launch site. Main achievements of Ukrainian scientists in the field of strength and life are specified, taking into account the specifics of various branches of technology. It is noted that the physical nonlinearity of the material and statistical approaches determine the strength analysis of useful life. Main methodological steps of launch site structures life prediction are defined. Service limit of launch site is suggested to be the critical time or the number of cycles (launches) over this period, after which the specified limiting states are achieved in the dangerous areas of the load-bearing elements: critical cracks, destruction, formation of unacceptable plastic deformations, buckling failure, corrosion propagation, etc. Classification of loads acting on the launch sites is given. The useful life of launch site is associated with estimation of the number of launches. Concept of low and multiple-cycle fatigue is used. Developing strength standards and useful life calculation basis, it is advisable to use modern methods of engineering diagnostics, in particular, holographic interferometry and acoustic emission, and to develop the high-speed circuits of numerical procedures for on-line calculations when testing the designed systems.

Key words: classification of loads and failures; shock wave, acoustic and thermal loads; low-cycle fatigue; hierarchical approach in classification; projection-iterative schemes of numerical procedur

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5.1.2019 Methodology of Normative Principles of Justification of Launch Vehicle Launching Facility Structures Lifetime
5.1.2019 Methodology of Normative Principles of Justification of Launch Vehicle Launching Facility Structures Lifetime
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Mathematic Modeling and Investigation into Stress-Strain State of Space Rocket Bays Authors: Akimov D. 1 , Klimenko D. Mechanika deformiruemogo tverdogo tela. M.: Institut kosmicheskykh issledovaniy RAN, 2009. F., Klimenko D. Akimov D. F., Klimenko D. Mathematic Modeling and Investigation into Stress-Strain State of Space Rocket Bays Автори: Akimov D. F., Klimenko D. Mathematic Modeling and Investigation into Stress-Strain State of Space Rocket Bays Автори: Akimov D. F., Klimenko D. Mathematic Modeling and Investigation into Stress-Strain State of Space Rocket Bays Автори: Akimov D. F., Klimenko D. Mathematic Modeling and Investigation into Stress-Strain State of Space Rocket Bays Автори: Akimov D. F., Klimenko D.
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4. Mathematic Modeling and Investigation into Stress-Strain State of Space Rocket Bays

Authors:

Akimov D. V.1, Larionov I. F.1, Klimenko D. V.1, Gryshchak V. Z.2, Gomenyuk S. I.2

Organization:

Yangel Yuzhnoye State Design Office, Dnipro, Ukraine1; Zaporizhzhia National University, Zaporizhzhia, Ukraine2

Page: Kosm. teh. Raket. vooruž. 2019, (1); 21-27

DOI: https://doi.org/10.33136/stma2019.01.021

Language: Russian

Annotation: This paper presents the overview and features of the stress-strain state analysis of the multilayer shell structures widely used in the design of the missile compartments. As a result of analysis of the current situation with the stress-strain state studies of the complex configuration shell structures and mathematical support of the load-bearing capacity calculation of the aerospace structures, the following actual research trends can be singled out: 1) improvement of the methods of analytical estimation of the thin-walled structures’ strength and resistance; 2) improvement of the numerical methods of composite materials mechanical properties analysis; 3) development or application of the existing software packages and ADE-systems, automatizing stress-strain state analysis with visualization of the processes under study. One of the most important steps of the third research trend is development of the initial data input media (setting the model parameters) and presentation of analysis results with account of the user interface visualization. The description of the mathematical simulation and experimental studies of the stress-strain state of the interstage bay made of carbon fiber sandwich structure is presented and short description of the structure condition after the tests is provided. Based on the analysis it can be concluded that development of the geometric simulation methods, taking into account the manufacturing deviations, is an independent problem from the point of view of practical applications in the aerospace technology.

Key words: sandwich structure, interstage bay, finite-element model, manufacturing deviations, test loads

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4.1.2019 Mathematic Modeling and Investigation into Stress-Strain State of Space Rocket Bays
4.1.2019 Mathematic Modeling and Investigation into Stress-Strain State of Space Rocket Bays
4.1.2019 Mathematic Modeling and Investigation into Stress-Strain State of Space Rocket Bays

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Vasidzu K. Variatsionnye metody v teorii uprugosti i plastichnosti / per. Mekhanika tverdogo tela. Konechnoelementniy analiz ploskodeformiruemukh sred s vklyucheniyami. Chislennoye modelirovanie povedeniya ploskodeformiruemykh strukturirivannykh sred na osnove proektsionno-iteratsionnykh ckhem MKE. Dopovidi NAN Ukrainy. Proektsionno-iteratsionnaya modifikatsia metoda lokalnykh variatsiy dlya zadach s kvadratychnym funktsionalom. S., Demenkov A. S., Klimenko D. Otsenka resursa konstruktsiy raketno-kosmicheskoy techniki pri uchete vliyaniya kontsetratov napryazheniy v vide otverstiy. G., Zubchaninov D. Degtyareva. N., Lobodyuk V. B., Rud’ V. S., Lebedev A. and Van Der Biest O.
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4. Numerical simulation of behavior of elastic structures with local stiffening elements

Authors:

Hudramovych V. S.1, Hart Ye. L.3, Strunin K. A.2

Organization:

The Institute of Technical Mechanics, Dnipro, Ukraine1; Yangel Yuzhnoye State Design Office, Dnipro, Ukraine2; Oles Honchar Dnipro National University, Dnipro, Ukraine3

Page: Kosm. teh. Raket. vooruž. 2019, (2); 25-34

DOI: https://doi.org/10.33136/stma2019.02.025

Language: Russian

Annotation: Availability of different inclusions, stiffenings, discontinuities (holes, voids and flaws) are the factors that cause structural irregularity and are typical for structural elements and buildings from various current technology areas, in particular aerospace technology. They significantly influence the deformation processes and result in stress concentration, which can cause local damages or malconformations and as a result lead to impossibility to further use the structure. Materials used are also heterogeneous in its structure. Inclusions can simulate thin stiffening elements, straps, welded or glue joints. It is necessary to detect the thin inclusions when phase transformations of materials are studied, for example, when martensite structures are formed. Study of the various bodies with inclusions is very important in the powder technology, ceramics, etc., where powder, previously compressed under high pressure, is sintered at high temperatures. Use of surface hardening that increases working efficiency of the structural elements is prospective in many engineering sectors. It is important to develop discrete hardening, implemented through manufacturing schemes of particular type. When discrete hardenings impact on the structural elements mode of deformation is simulated, they can also be considered as inclusions of specific structure. Inclusions can also simulate banding of the ferritic-pearlitic structure in the microstructure, related to the complex preloading under material plastic forming. It is advisable to use numerical methods for studies that are universal and suitable for objects of various shapes, sizes and types of loading. Main numerical methods are finite difference method, boundary element method, variation grid-based method, finite element method, method of local variations. This article features ANSYS – based computer simulation of the aerospace structural element behavior – a rectangular plate with two extended elastic inclusions of different rigidity, simulating elastic heterogeneities of structures and materials.

Key words: finite-element method, strength, inclusions, computer simulation

Bibliography:

1. Brebbia K., Telles J., Wroubell L. Metody granichnykh elementov / per. s angl. M., 1987. 524 s.
2. Vasidzu K. Variatsionnye metody v teorii uprugosti i plastichnosti / per. s angl. M., 1987. 544 s.
3. Vilchevskaya Ye. N., Korolev I. K., Freidin A. B. O fazovykh prevrasheniyakh v oblasti neodnorodnosti materiala. Ch. 2: Vzaimideistvie treschiny s vklyucheniem, preterpevayushim fazovoe prevraschenie. Izv. RAN. Mekhanika tverdogo tela. 2011. № 5. S. 32–42.
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4.2.2019 Numerical simulation of behavior of elastic structures with local stiffening elementse
4.2.2019 Numerical simulation of behavior of elastic structures with local stiffening elementse
4.2.2019 Numerical simulation of behavior of elastic structures with local stiffening elementse

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]]> Editorial board https://journal.yuzhnoye.com/editorial-board-en/ Sat, 13 May 2023 17:09:21 +0000 https://journal.yuzhnoye.com/?page_id=27126
PETRUSENKO, Yuzhnoye State Design Office MEMBERS OF THE EDITORIAL BOARD V. KLIMENKO, Candidate of Engineering, Head of Department in the Yuzhnoye State Design Office Kh. SANIN, Doctor of Engineering, Professor, Head of the Rocket and Space and Innovation Technologies Department of the Physics and Technology Faculty at the Oles Honchar Dniper National University V. SIRENKO, Candidate of Engineering, Head of the Design-Theoretical Division of the Yuzhnoye State Design Office V. KHOROSHILOV, Doctor of Engineering, Professor, Chief Research Associate of the Yuzhnoye State Design Office V. SHEKHOVTSOV, Doctor of Engineering, Professor, Academic Advisor of the Yuzhnoye State Design Office Editorial board maintains and supervises the collected articles activities.
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Editorial Board:

EDITOR-IN-CHIEF

M. O. DEGTYAROV, Candidate of Engineering, General Designer of the Yuzhnoye State Design Office

DEPUTY EDITOR-IN-CHIEF

E. G. GLADKIY, Doctor of Engineering, Chief Research Associate of the Yuzhnoye State Design Office

EXECUTIVE EDITOR OF THE EDITORIAL BOARD

L. I. PETRUSENKO, Yuzhnoye State Design Office

MEMBERS OF THE EDITORIAL BOARD

V. P. GORBULIN, Academician of the Ukraine’s National Academy of Sciences, First Vice-President of the Ukraine’s National Academy of Sciences
GRAZIANI FILIPPO, Senior Professor of Astrodynamics at Aerospace Engineering School, La Sapienza University of Roma; President of Group of Astrodynamics for the Use of Space Systems (Italy)
I. O. GUSAROVA, Doctor of Engineering, Chief Research Associate of the Yuzhnoye State Design Office
I. I. DEREVYANKO, Candidate of Engineering, Head of Department in the Yuzhnoye State Design Office
D. V. KLIMENKO, Candidate of Engineering, Head of Department in the Yuzhnoye State Design Office
Kh. V. KOZIS, Candidate of Engineering, Senior Associate
A. I. LOGVINENKO, Candidate of Engineering, Chief Research Associate of the Yuzhnoye State Design Office
G. A. MAIMUR, Candidate of Engineering, Chief Research Associate of the Yuzhnoye State Design Office
S. M. POLUYAN, Head of Division of the Yuzhnoye State Design Office
O. M. POTAPOV, Candidate of Engineering, Head of Division in the Yuzhnoye State Design Office
L. P. POTAPOVICH, Candidate of Engineering, Academic Secretary – Head of Research and Education Center of the Yuzhnoye State Design Office
A. F. SANIN, Doctor of Engineering, Professor, Head of the Rocket and Space and Innovation Technologies Department of the Physics and Technology Faculty at the Oles Honchar Dniper National University
V. M. SIRENKO, Candidate of Engineering, Head of the Design-Theoretical Division of the Yuzhnoye State Design Office
V. S. KHOROSHILOV, Doctor of Engineering, Professor, Chief Research Associate of the Yuzhnoye State Design Office
V. S. SHEKHOVTSOV, Doctor of Engineering, Professor, Academic Advisor of the Yuzhnoye State Design Office

Editorial board maintains and supervises the collected articles activities.

Editorial board
Editorial board
Editorial board
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