Experimental investigation of dynamic vibration absorption to design an improved particle damper

Abstract

We introduce a tuned particle damper (TPD) to improve the damping performance of the traditional particle damper by adding a dynamic vibration absorption structure. To better design a TPD as a dynamic vibration absorber (DVA), we changed the dynamics of a DVA system based on a primary cantilever system by introducing stainless steel balls and a carbon steel mass block. Using a series of sine-sweep tests on the primary cantilever system attached with a spring-mass system, we obtained frequency response function (FRF) curves under different conditions. Our experimental results show that the dynamic behavior of the primary cantilever system was more prominent on the resonance peak closer to the mass control area, whereas the dynamic behavior of the additional spring-mass system is more prominent on the resonance peak closer to the stiffness control area. Based on these results, we analyzed the abnormal but desirable dynamic characteristics of TPD presented in the discrete mass experiment, and the results indicates preliminary success with our design of a TPD.