Estimation of Energy Pumping Time in Bistable Nonlinear Energy Sink and Experimental Validation

Abstract The bistable nonlinear energy sink (NES) shows high efficiency in mitigating vibration through targeted transfer (TET). It performs well low- and high-energy input cases, whereas, for a cubic NES, TET occurs only above certain threshold. In this work, the measure of pumping time is extended to harmonic excitation case by application particular integration assumption. An equivalent point slow invariant manifold (SIM) structure can represent average variation amplitudes linear oscillator (LO) NES. marked robustness semi-analytical prediction method under parameter perturbation investigated numerically here. influence parameters on rate at which amplitude declines also both impulsive excitation. estimation validated low-energy experimental test.