an:06053890
Zbl 1242.70023
Belyakov, Anton O.
On rotational solutions for elliptically excited pendulum
EN
Phys. Lett., A 375, No. 25, 2524-2530 (2011).
00302737
2011
j
70F20
Summary: The author considers the planar rotational motion of the mathematical pendulum with its pivot oscillating both vertically and horizontally, so the trajectory of the pivot is an ellipse close to a circle. The analysis is based on the exact rotational solutions in the case of circular pivot trajectory and zero gravity. The conditions for existence and stability of such solutions are derived. Assuming that the amplitudes of excitations are not small while the pivot trajectory has small ellipticity the approximate solutions are found both for high and small linear dampings. Comparison between approximate and numerical solutions is made for different values of the damping parameter.