Eventos Anais de eventos
DINAME 2023
XIX International Symposium on Dynamic Problems of Mechanics
Nonlinear analysis of compensated asymmetric energy harvester
Submission Author:
João Pedro Canisso Valese Norenberg , MS
Co-Authors:
João Pedro Canisso Valese Norenberg, Roberto Luo Yuan Cai, Vinicius Lopes, João Peterson, Americo Barbosa da Cunha Junior
Presenter: João Pedro Canisso Valese Norenberg
doi://10.26678/ABCM.DINAME2023.DIN2023-0138
Abstract
Nonlinear vibration energy harvesting can convert kinetic energy into electricity at a broadband frequency. However, asymmetries can arise during a manufacturing process and drastically impair energy generation. Therefore, this work numerically investigates the effect of asymmetry on a bistable energy harvester using the bifurcation diagram and the basins of attractions proposed based on tests 0-1 for chaos. We introduce the asymmetries using a quadratic term on the restoring force and an external force due to the slope angle of the plane where the system is attached. A particular condition is established that an asymmetric term compensates the effect of the other one. The results indicated that although the asymmetric conditions the dynamic behavior becomes symmetric, and the negative effect of asymmetry can be avoided, enhancing the energy harvesting process.
Keywords
Vibration Energy Harvesting, nonlinear dynamics, Bistable oscillator, asymmetries, basins of attraction
