Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Petro Lizunov"'
Publikováno v:
Management of Development of Complex Systems. :47-53
One way to increase the overall stiffness of a shell structure is to design shells with variable thickness. The effect of thickness change on the stability of flexible shallow panels has been little studied due to the complexity of solving such non-l
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0f3f5b54ed83ff12995809abdd75a309
https://doi.org/10.32347/2412-9933.2022.52.47-53
https://doi.org/10.32347/2412-9933.2022.52.47-53
Publikováno v:
Strength of Materials and Theory of Structures. :20-29
In this paper, we consider a two-mass 2-DOF vibro-impact system, consisting of a linear oscillator, called the primary structure, and an impact damper attached to it. A damper with a small mass hits a wall rigidly connected to the primary structure.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1f219cecd3b684cb3e8076d7156c443a
https://doi.org/10.32347/2410-2547.2022.109.20-29
https://doi.org/10.32347/2410-2547.2022.109.20-29
Autor:
Olga Krivenko, Petro Lizunov
Publikováno v:
Strength of Materials and Theory of Structures. :66-71
Vibrations of launch vehicle conical fairings are investigated. Fairings are simulated using thin conic shells. The modal analysis of a thin elastic shell is based on the use of the developed finite element model of an inhomogeneous shell. In general
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0b19f29183aa5aa676ed7629420388c7
https://doi.org/10.32347/2410-2547.2022.109.66-71
https://doi.org/10.32347/2410-2547.2022.109.66-71
Publikováno v:
Nonlinear Dynamics. 111:2379-2394
This article studies the dynamical behavior of a two-body 2-DOF vibro-impact system when changing both its parameters and external load parameters. The considered vibro-impact system is a model of a platform vibrator with shock used in the constructi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::96252708dca27b0e7477f974b16d7dcd
https://doi.org/10.1007/s11071-022-07966-7
https://doi.org/10.1007/s11071-022-07966-7
Publikováno v:
Strength of Materials and Theory of Structures. :63-76
The nonlinear energy sink (NES) is defined as a single-degree-of-freedom structural element with relatively small mass and weak dissipation, attached to a primary structure via essentially nonlinear coupling. It is a passive energy dissipation device
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d6dfea0a5d7109124d36949f33082cc2
https://doi.org/10.32347/2410-2547.2022.108.63-76
https://doi.org/10.32347/2410-2547.2022.108.63-76
Publikováno v:
Management of Development of Complex Systems. :85-94
Recognition of incomplete duplicates of images and tables is considered. In order to recognize graphical data (for image classification and compression), wavelet analysis is used with a set of classic characteristic functions: Morlet and Haar wavelet
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::34e62181b7c5bfc542161972b90cfbc9
https://doi.org/10.32347/2412-9933.2021.48.85-94
https://doi.org/10.32347/2412-9933.2021.48.85-94
Publikováno v:
Strength of Materials and Theory of Structures. :257-264
The paper presents the investigation results of the harmonic periodic axial loads’ influence on the stability of shaft. Such loads can be appeared during the running of the vessel passing the turbulence zones from the side of the propeller to the s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2473eabb980e122eff0f548961223767
https://doi.org/10.32347/2410-2547.2021.107.257-264
https://doi.org/10.32347/2410-2547.2021.107.257-264
Autor:
Petro Lizunov, Andrii Biloshchytskyi, Alexander Kuchansky, Yurii Andrashko, Tamara Liashchenko
Publikováno v:
Management of Development of Complex Systems. :102-108
The paper describes the possibilities of applying latent semantic analysis to identify the completeness of the coverage of the results of dissertation research by applicants for scientific degrees. To achieve this goal, the following tasks were set a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::be2eb5e6b456940b94eeaf7d798627d1
https://doi.org/10.32347/2412-9933.2021.47.102-108
https://doi.org/10.32347/2412-9933.2021.47.102-108
Autor:
Petro Lizunov, Andrii Biloshchytskyi, Alexander Kuchansky, Yurii Andrashko, Svitlana Biloshchytska, Oleg Serbin
Publikováno v:
Eastern-European Journal of Enterprise Technologies, Vol 4, Iss 4(112), Pp 57-63 (2021)
The methods for identification of near-duplicates in electronic scientific papers, which include the content of the same type, for example, text data, mathematical formulas, numerical data, etc. were described. For text data, the method of locally se
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::24046d63de6734ad2ee51ea4d94f6eb0
http://journals.uran.ua/eejet/article/view/238318
http://journals.uran.ua/eejet/article/view/238318
Autor:
Valentyn Nedin, Petro Lizunov
Publikováno v:
Strength of Materials and Theory of Structures. :113-121
The paper presents the investigation results of the vibro-impact loads’ influence on the stability of vibro-drilling machine’ drill-rod in the process of well in hard rock. The drilling process of such wells is significantly facilitated in case o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f8505a6898828d5f7a8b8c74d0c9a6e6
https://doi.org/10.32347/2410-2547.2021.106.113-121
https://doi.org/10.32347/2410-2547.2021.106.113-121