Materiały konferencyjne, referaty (WM)

Stały URI dla kolekcjihttp://hdl.handle.net/11652/163

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20212

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Autorsearch.filters.applied.operator.equals: search.filters.author.Kudra, GrzegorzMa przypisane plikisearch.filters.applied.operator.equals: Tak

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Teraz wyświetlane 1 - 2 z 2
  • Pozycja
    Nonlinear Dynamics of Forced Oscillator Subjected to a Magnetic Interaction
    (Wydawnictwo Politechniki Łódzkiej, 2021) Skurativskyi, Sergii; Kudra, Grzegorz; Witkowski, Krzysztof; Wasilewski, Grzegorz; Awrejcewicz, Jan
    It is considered the system composed of a cart moving along a linear rolling bearing with harmonic excitation produced by a stepper motor with an unbalanced disk. The magnetic field is generated by a pair of non-point neodymium magnets, one of which is mounted on the cart, whereas another one is fixed on the guide out of the axis of oscillations. The mathematical model for the cart dynamics is derived where the scaled point dipoles approximation of magnetic interaction is used. The numerical and bifurcation analysis of the model presented is carried out and compared to the experimental results.
  • Pozycja
    Parametric Vibrations of a System of Oscillators Connected with Periodically Variable Stiffness
    (Wydawnictwo Politechniki Łódzkiej, 2021) Kudra, Grzegorz; Witkowski, Krzysztof; Seth, Soumyajit; Polczyński, Krystian; Awrejcewicz, Jan
    The work is a part of a larger project concerning investigations of different configurations of connected oscillators with direct and parametric forcing sources. Among others, we present preliminary numerical studies of dynamics of a system composed of two oscillators connected with periodically variable stiffness. Each of the oscillators is connected to the fixed support with the use of a nonlinear magnetic spring. Based on the derived mathematical equations of the parametric system, a bifurcation plot was calculated for different shaft speeds. Bifurcation analysis shows both the ranges of periodic and chaotic motion. As an additional part, we will realize this kind of mechanical system from an electrical point of view, and we shall observe the phenomena experimentally.