Study on damping performance of non-ideal particle-tuned inerter damper

Abstract

Aiming at the shortcomings of the current particle dampers and the needs of civil engineering vibration damping, while considering the damping in the non-ideal inertial vessel, a new type of non-ideal particle tuned inerter damper (NPTID) is proposed. Firstly, the construction and technical realization of NPTID are introduced, the mechanical model of NPTID is proposed based on the principle of energy dissipation by particle collision, and the motion control equations of the single-degree-of-freedom structure with an additional NPTID are established; then three natural seismic waves and one artificial seismic wave are selected as the external excitations, and the damping performance of the NPTID is analyzed; finally, the influence of key parameters on the control effect of the NPTID is investigated by parametric analysis. The results show that NPTID has good control effect, and can realize the reduction ratio of more than 43% by utilizing a 0.1% particle mass ratio.