КОЛИВАННЯ РІДИНИ З ВІЛЬНОЮ ПОВЕРХНЕЮ В ЦИЛІНДРИЧНОМУ РЕЗЕРВУАРІ НА МАЯТНИКОВОМУ ПІДВІСІ У РАЗІ БАГАТОЧАСТОТНОГО РУХУ ТОЧКИ ПІДВІСУ
Journal Title: Інформаційні системи, механіка та керування - Year 2018, Vol 0, Issue 19
Abstract
The problem of a cylindrical reservoir dynamics with the fluid on pendulum suspension with a movable suspension point is under investigation. Fixing of the reservoir with liquid on a pendulum suspension considerably changes normal frequencies of the system in the case of system modeling within the combined formulation. Thus, there are changes both in frequencies values and in their mutual distribution, since the frequencies change takes place only for antisymmetric modes of liquid oscillations and the normal mode corresponding to reservoir pendulum oscillations. The motion of the suspension point occurs on frequencies, which correspond to main resonances of the given system reservoir – liquid. The problem is considered in the nonlinear statement with the purpose to determine the system sensitivity to every resonant excitation. Modeling of the system motion is based on variation algorithms. Numerical example testifies the frequencies arrangement change, which in turn promotes the use of a pendulum suspension for reducing of the main resonance intensity according to the first antisymmetric mode. It is shown that the pendulum suspension fixing is a mean of vibroprotection of the system and it can be used in the case of the earthquake danger and other types of intense disturbance of oscillations.
Authors and Affiliations
О. С. Лимарченко, О. О. Нефьодов
Keywords
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