near resonance modes of motion

Peculiarities of dynamics of the reservoir with a free-surface liquid on pendulum suspension with the moving suspension point

Problem of dynamics of a reservoir of cylindrical shape, partially filled with liquid, on pendulum suspension with movable suspension point is under investigation. The problem is considered in nonlinear statement with the purpose of clarification of the effect of pendulum suspension on both frequency characteristics and the system behavior in the near-resonance zone. Analytical and numerical study shows that normal frequencies of oscillations have considerable changes for both quasi-rigid pendulum mode of motion and especially for frequency of liquid sloshing modes.