On Piezoelectric Energy Harvesting Using a Nonlinear Vibration Absorber

The mechanical system is considered which consists of two coupled oscillators (nonlinear absorber connected with primary mass) and piezoelectric element attached. Two goals are pursued: the mitigation of the responses of the main mass and maximizing the amount of energy extracted from vibrations. The influence of nonlinear stiffness component is discussed. It is shown that the piezoelectric element allows the effective energy harvesting and at the same has very limited influence on reducing the amplitude of oscillations of the main mass.