LRLC-shunted piezoelectric vibration absorber

This paper addresses a new approach for mono-modal vibration reduction by means of a piezoelectric shunt. It is based on an innovative shunt impedance which allows to improve the attenuation performance and the robustness to mistuning compared to the use of the classical resonant shunt. This result is achieved by building a network, composed of two inductances, one capacitance and one resistance, which generates two resonances, instead of the single resonance imposed by the classical resonant shunt. All the theoretical results discussed in the paper are validated by an experimental campaign on a tailored set-up. These tests show a good agreement between theoretical and experimental results and thereby validate the benefits of the new approach.