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Dynamic Methods of Damping the Oscillation in Structure–Free-Surface Fluid System

  • A. V. KonstantinovEmail author
  • O. S. Limarchenko
  • V. V. Lukyanchuk
  • A. A. Nefedov
Article
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Two options of reducing the oscillation of a structure with fluid are considered. To reduce the oscillation of a load-carrying structure, it is proposed to use a control algorithm that includes an analytically defined compensation of the mechanical interaction between the fluid and the structure. In this case, it is possible to achieve, with some errors, a state in which the structure moves as if the fluid has hardened. In the case of a seismic disturbance of the system, it is proposed to use a pendulum suspension instead of rigid fixation of the structure. How the length of the pendulum suspension is selected is shown. The pendulum suspension substantially reduces the mechanical interaction of the fluid and the structure and the wave amplitudes on the free surface, especially for high-frequency disturbances. Numerous examples illustrating the benefits of the proposed methods are given.

Keywords

nonlinear dynamics combined motion reduction of oscillations control with compensation of fluid mobility seismic excitation pendulum suspension 

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • A. V. Konstantinov
    • 1
    Email author
  • O. S. Limarchenko
    • 2
  • V. V. Lukyanchuk
    • 2
  • A. A. Nefedov
    • 2
  1. 1.Institute of Mathematics of NAS of UkraineKyivUkraine
  2. 2.Taras Shevchenko State University of KyivKyivUkraine

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