Abstract
The auto-parametric vibration absorber, which is a kind of nonlinear absorber, suppresses the vibration of main system only at around the resonance point. However, because of the existence of another stable solution due to auto-parametric vibration absorber, the vibration of main system may increase when the excitation frequency is slightly apart from the resonance point. In this paper, the improvement of auto-parametric vibration absorber for the suppression of such another stable solution is investigated. A stopper consists of spring element and damper element is set to limit the absorber motion, and the effects of these elements are investigated and clarified.
