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Wyświetlanie 1-3 z 3
Tytuł:
Formation of an integrated structural assessment of the export potential of the aviation complex
Autorzy:
Andriushchenko, Kateryna
Gurina, Ganna
Danilova, Elvira
Zalizniuk, Viktoriia
Platonov, Oleg
Tkachuk, Vitalii
Powiązania:
https://bibliotekanauki.pl/articles/1833746.pdf
Data publikacji:
2021
Wydawca:
Centrum Badań i Innowacji Pro-Akademia
Tematy:
aviation enterprise
integrated structural assessment
export potential
aviation complex
export-import flows
international competitive strategy
competitive advantages
risks
foreign economic relations
przedsiębiorstwo lotnicze
zintegrowana ocena konstrukcji
potencjał eksportowy
kompleks lotniczy
przepływy eksportowo-importowe
międzynarodowa strategia konkurencyjna
przewagi konkurencyjne
ryzyko
zagraniczne stosunki gospodarcze
Opis:
Successful operation and development of enterprises in modern conditions involves the expansion of markets. The company's entry into international markets requires the formation of its international competitive strategy, identification of competitive advantages in the markets of selected countries, and this, in turn, implies the need for export potential of the company. In determining the export potential of the aviation complex, it is necessary to consider the specific features of enterprises in this industry, among which we can highlight the features of the products of aviation enterprises and the features of the international aviation market. To qualitatively assess the level of economic potential, we propose to use a system of classification features, developed based on the well-known Harrington scale, but slightly modified by the authors in relation to the calculated data and available statistical information. The phases of the life cycle of the economic potential of the enterprise are determined. Not only the quantitative and qualitative level of economic potential are important, but also the changes associated with the passage of time. In order to determine the importance of indicators in each group, methods of component analysis of the characteristics of variation series of the results of the survey of experts were used. When comparing the variation of different features in one set with different average value, we use the relative indicators of variation - coefficients of variation. The obtained result together with the results of application of the method of component analysis allows us to conclude that in the formation of the integrated indicator of the first group (K1) it is enough to consider these five indicators, and the most important of them are two: technological processes to other activities.
Źródło:
Acta Innovations; 2021, 39; 41--53
2300-5599
Pojawia się w:
Acta Innovations
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Diagnostics of the strength and stiffness of the loader carrier system structural elements in terms of thinning of walls by numerical methods
Autorzy:
Orobey, Viktor
Nemchuk, Oleksii
Lymarenko, Oleksandr
Piterska, Varvara
Sherstiuk, Olha
Romanov, Oleksandr
Tkachuk, Kateryna
Powiązania:
https://bibliotekanauki.pl/articles/1840856.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
Tematy:
gantry cranes
boundary element methods
finite element methods
stress state
strain state
Matlab
Ansys
suwnica
metoda elementów brzegowych
metoda elementów skończonych
naprężenia
odkształcenia
Opis:
Modern gantry cranes are an indispensable element of large industrial and transport enterprises. Port handling equipment is operated under conditions of complex spatial loading of varying intensity, as well as under conditions when the walls of structural elements are thinned in the crane carrier system. During the operation of handling equipment in ports, at construction sites, in machine-building industries, in addition to the external load, aggressive media act on the carrier system elements, which leads to various types of wear: corrosive, abrasive and mechanical. Monitoring of the state of handling equipment structures is a very important task of diagnosing the state of the material of elements of the carrier system of cranes and transporting machines. An important and urgent scientific and technical problem of taking into account the influence of aggressive environment on the stress-strain state of the metal structures of gantry cranes is considered. It is noted that during corrosion, a significant thinning of the walls of structural elements occurs. The safety of crane operation requires this factor to be taken into account. It is proposed to use modern numerical methods for this, i.e. the boundary element method (BEM) and the finite element method (FEM). The implementation of these methods is performed in the Matlab programming and modeling environment (BEM), and the FEM is used in the Ansys package. In accordance with the technologies of these methods, the design diagrams of the lower girders and the crane structure as a whole were formed. Exact models of strain of crane elements during transverse bending and constrained torsion are given. Calculations of the stressstrain state of the crane metal structures have been performed. On the basis of a preliminary field study, a numerical model is proposed for diagnosing the strength and stiffness characteristics of the carrier system of handling equipment using the BEM and FEM, which has never been used in the world. Conclusions are drawn about the influence of the thinning of the walls of metal structures on the values of normal and tangential stresses.
Źródło:
Diagnostyka; 2021, 22, 3; 73-81
1641-6414
2449-5220
Pojawia się w:
Diagnostyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Diagnostics of the strength and stiffness of the loader carrier system structural elements in terms of thinning of walls by numerical methods
Autorzy:
Orobey, Viktor
Nemchuk, Oleksii
Lymarenko, Oleksandr
Piterska, Varvara
Sherstiuk, Olha
Romanov, Oleksandr
Tkachuk, Kateryna
Powiązania:
https://bibliotekanauki.pl/articles/1840862.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
Tematy:
gantry cranes
boundary element methods
finite element methods
stress state
strain state
Matlab
Ansys
suwnica
metoda elementów brzegowych
metoda elementów skończonych
naprężenia
odkształcenia
Opis:
Modern gantry cranes are an indispensable element of large industrial and transport enterprises. Port handling equipment is operated under conditions of complex spatial loading of varying intensity, as well as under conditions when the walls of structural elements are thinned in the crane carrier system. During the operation of handling equipment in ports, at construction sites, in machine-building industries, in addition to the external load, aggressive media act on the carrier system elements, which leads to various types of wear: corrosive, abrasive and mechanical. Monitoring of the state of handling equipment structures is a very important task of diagnosing the state of the material of elements of the carrier system of cranes and transporting machines. An important and urgent scientific and technical problem of taking into account the influence of aggressive environment on the stress-strain state of the metal structures of gantry cranes is considered. It is noted that during corrosion, a significant thinning of the walls of structural elements occurs. The safety of crane operation requires this factor to be taken into account. It is proposed to use modern numerical methods for this, i.e. the boundary element method (BEM) and the finite element method (FEM). The implementation of these methods is performed in the Matlab programming and modeling environment (BEM), and the FEM is used in the Ansys package. In accordance with the technologies of these methods, the design diagrams of the lower girders and the crane structure as a whole were formed. Exact models of strain of crane elements during transverse bending and constrained torsion are given. Calculations of the stressstrain state of the crane metal structures have been performed. On the basis of a preliminary field study, a numerical model is proposed for diagnosing the strength and stiffness characteristics of the carrier system of handling equipment using the BEM and FEM, which has never been used in the world. Conclusions are drawn about the influence of the thinning of the walls of metal structures on the values of normal and tangential stresses.
Źródło:
Diagnostyka; 2021, 22, 3; 73-81
1641-6414
2449-5220
Pojawia się w:
Diagnostyka
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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