Eventos Anais de eventos
CONEM 2018
X Congresso Nacional de Engenharia Mecânica
Piezoelectric energy harvesting by using a two-degrees-of-freedom portal frame
Submission Author:
Rodrigo Tumolin Rocha , SP
Co-Authors:
Rodrigo Tumolin Rocha, Angelo Marcelo Tusset, José Manoel Balthazar, Frederic Conrad Janzen
Presenter: José Manoel Balthazar
doi://10.26678/ABCM.CONEM2018.CON18-0849
Abstract
In this work, a piezoelectric energy harvesting application will be considered using a two-degrees-of-freedom portal frame. The piezoelectric material will be considered as a linear device, however, using an electric voltage mathematical model. The portal frame is a two-degrees-of-freedom structure considering a quadratic coupling in its coupling and a two-to-one internal resonance, which is the majority condition to present saturation phenomenon. Saturation phenomenon is when the vibration energy of a coordinate saturates and partially transfer from it to the other one, which allows the energy harvesting, in this case, due to the transfer from beam’s vibration to the columns. The governing equations of motion of the system were obtained by applying the energy method of Lagrange.
Keywords
piezoelectric energy harvesting, nonlinear dynamics, electric voltage model, portal frame, saturation phenomenon
