ВПЛИВ ВИСОКОДЕМПФУЮЧИХ ПОКРИТТІВ НА РЕЗОНАНСНІ КОЛИВАННЯ ТИТАНОВОЇ ПЛАСТИНИ.

Кременчутський, О. С.; Устінов, А. І.

The results of a study of the influence of high damping Co‒Ni and Co‒Fe coatings on the resonant vibrations of the titanium plate-coating system are presented. It has been established that when the amplitude of the resonant vibrations of the system increases to a certain critical value, the dependence of the characteristics of its resonant vibrations on the parameters of external excitation becomes nonlinear. The value of the critical vibrations amplitude, at which a transition from weakly linear to nonlinear vibrations is observed, depends on the slope of the amplitude dependence of the damping capacity (DC) of the system: the steeper the amplitude dependence of the DC, the lower the critical amplitude value, at which the system transition to nonlinear vibrations occurs. Nonlinearity of vibrations manifests itself both in an abrupt change in amplitude with a slight change in the frequency of forced vibrations, and in the occurrence of hysteresis in the amplitude-frequency dependences. The transition of a system to vibrations mode with strong nonlinearity can affect the efficiency of suppression of resonant vibrations with large amplitude in it.

RESONANT vibration; VIBRATION (Mechanics); DAMPING capacity; FREQUENCIES of oscillating systems; NONLINEAR systems

Electrometallurgy Today / Sovremennaya Elektrometallurgiya, 2024, Issue 3, p3

3041-2382

Academic Journal

10.37434/sem2024.03.01