Experimental investigation of dynamic vibration absorption structure for designing better tuned particle damper

Tuned particle damper (TPD) has been proposed for improving the damping performance of the traditional particle damper by introducing the dynamic vibration absorption structure. To better design TPD that can be seen as a dynamic vibration absorber (DVA) with particle damping, the change of dynamical characteristic of a DVA system was explored based on a primary cantilever system by introducing stainless steel balls and carbon steel mass block respectively. By a series of sine sweep tests on the primary cantilever system attached with a spring-mass structure, a host of frequency response function (FRF) curves under different conditions were obtained. Experimental results show that the dynamic behavior of the primary cantilever system is more displayed on the resonance peak closer to the mass control area, while the dynamic behavior of the additional spring-mass structure is more displayed on the resonance peak closer to the stiffness control area. Based on the results, the abnormal but desirable dynamical characteristic of TPD presented in the discrete mass experiment is analyzed, which indicates preliminarily the design direction of TPD structure in engineering practice.