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Wyszukujesz frazę "mechanical system modeling" wg kryterium: Temat

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    Wyświetlanie 1-3 z 3
    Tytuł:
    Solution approaches to differential equations of mechanical system dynamics: a case study of car suspension system
    Autorzy:
    Terefe, Tesfaye O.
    Lemu, Hirpa G
    Powiązania:
    https://bibliotekanauki.pl/articles/102050.pdf
    Data publikacji:
    2018
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    numerical method
    Euler method
    differential equation
    suspension system
    MATLAB
    mechanical system modeling
    metoda numeryczna
    Metoda Eulera
    równanie różniczkowe
    zawieszenie
    modelowanie układów mechanicznych
    Opis:
    Solution of a dynamic system is commonly demanding when analytical approaches are used. In order to solve numerically, describing the motion dynamics using differential equations is becoming indispensable. In this article, Newton’s second law of motion is used to derive the equation of motion the governing equation of the dynamic system. A quarter model of the suspension system of a car is used as a case and sinusoidal road profile input was considered for modeling. The state space representation was used to reduce the second order differential equation of the dynamic system of suspension model to the first order differential equation. Among the available numerical methods to solve differential equations, Euler method has been employed and the differential equation is coded MATLAB. The numerical result of the second degree of freedom, quarter suspension system demonstrated that the approach of using numerical solution to a differential equation of dynamic system is suitable to easily simulate and visualize the system performance.
    Źródło:
    Advances in Science and Technology. Research Journal; 2018, 12, 2; 266-273
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Collision modeling of single unit impact absorber for mechanical systems vibration attenuation
    Autorzy:
    Chehaibi, Kaouther
    Mrad, Charfeddine
    Nasri, Rachid
    Powiązania:
    https://bibliotekanauki.pl/articles/281907.pdf
    Data publikacji:
    2019
    Wydawca:
    Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
    Tematy:
    mechanical system
    single unit impact absorber
    collision modeling
    Opis:
    A single unit impact absorber is a ball absorber located in a mechanical system to attenuate its undesirable vibration. The absorber has a free motion constrained by stops. Collisions between the main system and the absorber masses help to dissipate kinetic energy as heat, noise and high frequency vibrations and thus reducing the main system dynamic response. However, the collisions give rise to discontinuity and strong nonlinearity. This work intends to study the effect of the collision modeling on the absorber efficiency. The contact force-based linear viscoelastic model of Hook-Newton, nonlinear elastic model of Hertz, and nonlinear viscoelastic model proposed by Hunt and Crossley are considered. For each case, analytical study is conducted to determine the equations of motion. The system responses are obtained for forced vibration, considering the whole ball motion cycle: left impact-free motion-right impact and following a numerical resolution based on the Newmark method. Finally, comparison of different impact models is made to conclude on the single unit impact absorber performance.
    Źródło:
    Journal of Theoretical and Applied Mechanics; 2019, 57, 4; 947-956
    1429-2955
    Pojawia się w:
    Journal of Theoretical and Applied Mechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    National Mechanical Engineering in Conditions of Economic Globalization
    Autorzy:
    Ishchuk, Svitlana
    Sozanskyy, Luybomyr
    Powiązania:
    https://bibliotekanauki.pl/articles/2201162.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    global-range economic system
    regional-range economic system
    transnational business modeling
    descriptive analytic
    economic model
    economic globalization
    national mechanical engineering
    transnational corporation
    indicator
    Opis:
    The study was conducted to assess and substantiate the key systemic problems of the national engineering of different countries in the context of economic globalization. To achieve this goal, the study used the author’s method to assess the dependence of mechanical engineering in Ukraine, Poland and Germany on imports of intermediate goods. According to the results, it was determined that in the periods of increasing economic globalization of mechanical engineering in Ukraine, Poland and Germany has undergone systemic destructive changes and is in a threatening state, from the standpoint of economic security. In particular, in Ukrainian and Polish mechanical engineering, the dependence on imports of high-tech intermediate goods is excessively high. In contrast, German engineering, unlike Ukraine’s and Poland’s, is less dependent on imports of high-tech products, but requires much more resource-intensive intermediate goods. It is analytically substantiated that the identified problems with the import dependence of mechanical engineering in Ukraine, Poland and Germany are the result of irrational, one-sided perception of economic globalization by the main economic entities of these countries.
    Źródło:
    Management and Production Engineering Review; 2022, 13, 4; 107--125
    2080-8208
    2082-1344
    Pojawia się w:
    Management and Production Engineering Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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