Shaking Table Test of the Effects of Particle Dampers Attached to a Multi-Degree-of-Freedom System. Part 1: Experimental study

摘要

This paper presents the results of an experimental study of the performance of multi-unit particle dampers with a multi-degree-of-freedom system under earthquake excitations. A series of shaking table tests of a three-storey steel frame with the particle damper system are carried out to evaluate the performance of the system. The experimental results indicate that the frame with particle dampers has smaller response compared with that of the frame without particle dampers;;that the excitation characterization influences the performance of particle damper system;;and that the particle movements of plug flow pattern can yield good vibration attenuation effects. It is shown that by using a properly designed multi-unit particle dampers, a lightly damped primary system can achieve a reasonable reduction in its response, with a small weight penalty.